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HomeMy WebLinkAboutReview of Building and Development Regulations-1998/9'?P The Taws of Sunset Beach, NC Review of Building and . Development Regulations For Implementation of the CAMA Land Use Plan Update Bill Farris -Associates 1806 Grace Street Wilmington, NC 28405 PROPERTY OF DIVISION OF COASTAL MANAGEMENT - - PLEASE DO NOT REMOVE TABLE OF CONTENTS 1.0 Introduction and Purpose Part One —Evaluation of Building and Development Regulations 2.0 Overview of CAMA LUP Policies 2 3.0 Review of Building and Development Regulations 5 3.1 Land Uses in Coastal Wetlands 5 3.2 Commercial Boating 6 3.3 Estuarine Shoreline Uses 7 3.4 Uses. in Ocean Hazards Area 7 3.5 Tree Preservation 9 3.6 Package Treatment Plants 11 3.7 Adverse Growth and Development 12 3.8 Preserve Small Town Character 13 4.0 Building Height Limits and Residential Densities 15 4.1 Height Limits 15 4.1.1 Residential —single-family 15 4.1.2 Residential —multifamily 16 4.1.3 Commercial 16 4.2 Residential Densities 17. 4.2.1 Permitted Densities 17 4.2.2 Comparison with Other Communities 19 4.2.3 Typical Golf Course Development 20 4.2.4 Current Development Practices 21 4.2.5 Recommendations 22 5.0 The PRD and Conservation Zoning 24 5.1 Planned Residential Development 24 5.2 Conservation Zoning 25 i Part Two —Draft Ordinance Amendments 6.0 Draft Ordinance Amendments 26 Tree Preservation Zoning Ordinance 27 Subdivision Regulations 29 Conservation Design Overlay District 30 Administrative Amendments 32 MB-1 Height Limits 34 Appendix I Summary of Land Use and Development Policies Appendix II Summary of Residential District Requirements H 0 7 0 .., I I LO INTRODUCTION AND PURPOSE The town of Sunset Beach adopted its CAMA Land Use Plan update in October 1997. The updated plan is currently under review by the Coastal Resources Commission and the Town expects certification by the CRC in the spring of 1998. . The updated plan contains a number of land use and development policies that must be implemented by local development ordinances —zoning, subdivision regulations, flood damage prevention, and stormwater management. In addition, the plan calls for specific studies of building height limits and residential densities to insure that they are consistent with the goals and policies included in the plan. The purposes of this study are as follows: • To conduct a general review of the Town's building and development regulations to assess consistency with the policies contained in the updated plan. • To evaluate densities permitted in the Town's residential zoning districts and to recommend appropriate adjustments. • To evaluate current mainland height limits and recommend appropriate changes. • To develop, for Planning Board consideration, draft ordinance amendments for recommended changes. The report is organized in two parts. Part one evaluates the adequacy of the Town's building and development regulations for implementing key policies from the Land Use Plan. Part two includes specific studies of height limits, residential densities, and conservation zoning. After review and decisions by the Planning Board, specific ordinance amendments will be prepared. 1 H H H D 2.0 OVERVIEW OF CAMA LUP POLICIES VISION The residents, property and business owners of the Sunset Beach Planning Area shall endeavor to preserve the small town character of our community with orderly growth which enhances its appeal as a family resort and retirement community. Our goal is to preserve and improve the quality of the natural and manmade environment which has become the basis for our quality of life at Sunset Beach. —1997 Land Use Plan Update (emphasis added) The LUP contains a number of specific policies that are designed to achieve the Town's Dvision and overall goal. Within this group of policies, those that address land use and development are summarized in Appendix A. The.policies in this group are dependent a upon effective local codes for implementation and are the basis for the review of the Town's building and development regulations. aAfter preliminary review, sixteen of the LUP policies and related building and development regulations were identified for further review. These policies are listed Obelow: ■ Restrict land uses in coastal wetlands and marshes to those that are water adependent and that conserve and protect ■ Support appropriate development of boat launching and dry storage facilities to protect estuarine waters —upland excavation not permitted. ■ Allow only uses in the Estuarine Shoreline Area that comply with State standards and meet local requirements —no weakening of natural erosion barriers, no interference with public trust access, no runoff increase, no pollution generated, compliance with Soil Erosion/Sedimentation Control Standards. ■ Allow uses in ocean hazards area that eliminate unreasonable danger to life and property —small structures with proper setbacks, protection of frontal dune and vegetation, compliance with minimum lot sizes and setbacks 2 established by local ordinances, and minimize adverse impacts on environment. a■ Encourage efforts to preserve tree cover in new development and redevelopment. ■ Allow off -site wastewater treatment systems until central system is available. ■ Allow package wastewater treatment systems —connect to central system when available. a ■ Require compliance with Flood Damage Prevention Ordinance ■ Insure that proper and adequate measures are incorporated into design, aconstruction, and operation of residential and commercial development to minimize substantial impacts on the coastal ecosystem. ■ Protect Town from adverse growth and development by considering following factors in development review: ... Land suitability a... Capacity of environment ... Compatibility with community goals and objectives ... Density and height ... Capacity of community services a ... Impact on AEC's ... Location of hazardous areas with tendency for septic tank problems, flooding, and washover. ■ Preserve the small town character of Sunset Beach —preserve and improve quality of natural and manmade environment. Encourage growth patterns that reinforce existing residential and commercial development and that protect the environment. a ■ Encourage development of a variety of housing types to meet the needs/desires of current and future residents: ... Maintain areas exclusively for single family residences ... Retain predominantly single family residential character of the Island —restrict conversion of single family to duplexes to lots abordering beach strand or the BB-1 zoning district ... Retain 35-foot height limit on Island ... Allow multifamily and condominium development in golf course developments and as permitted by MB-1 and BB-1 zoning districts ... Provide areas for manufactured homes on the mainland ■ Study feasibility of establishing a 50-foot height limit on the mainland with changes allowed only by referendum. a 3 Study feasibility of establishing residential density limits for each zoning district. ■ Study feasibility of revising zoning ordinance and subdivision regulations to promote conservation of natural areas. 4 I 3.0 REVIEW OF BUILDING AND 0 DEVELOPMENT REGULATIONS 3.1 Restrict land uses in coastal wetlands and Qmarshes to those that are water dependent and that conserve and protect. CAMA Permitting. The Town has mechanisms in place to implement this policy. The first, and key one, is the. CAMA local permitting process. Land use and construction within coastal wetlands are governed by the use standards of the CAMA program (NCAC T15A.0208). These standards limit uses within wetlands to those that are water dependent' and requires either a minor (issued by the Town) or major (issued by State) a permit for any use in a wetland. Several findings must be made before a permit can be issued. These are summarized as follows: a1. Location, design, and need for development must be consistent with management objectives. a 2. No suitable alternative site exists for the use; selected site within AEC is one where use will cause least impact. 3. Development does not violate water and air quality standards. a4. Development does not cause major or irreversible damage to archaeological or historic resources. a 5. Development will not measurably increase siltation and will not create stagnant water bodies. 6. Development timing will minimize impact on estuarine resources. 7. Development does not impede the public's use of public trust areas or estuarine waters. ' lace and is effective in its of minor re The Town s local permitting process is m p g development in coastal wetlands. Major development is regulated by the State's permitting process. ' Restaurants, residences, apartments, motels, trailer parks, private roads, and parking lots are specific examples of uses that are not water dependent. 5 Subdivision regulations. The Subdivision Regulations are the second mechanism to control wetland development. Section 153.19 (2) states that ..."no buildings or structures Oshall be allowed to be built in the wetlands." The ordinance is not specific as to whether it addresses coastal wetlands or "404" wetlands. It is interpreted as including both types Oof wetlands. The effect of this provision is to insure that lots are designed in such a manner as to provide sufficient non -wetland area to accommodate the principle uses, accessory buildings, and an on -site wastewater treatment system. When lots are ready for aconstruction, the building permit prevents construction in the wetland area. The requirement supports the policy restricting uses in coastal wetlands. a 3.2 Support appropriate development of a commercial marinas boat launchingand dry ry storage facilities a The LUP policy supports the development of commercial marinas, boat launching, and dry boat storage facilities. The location and development of these uses will be guided by the CAMA major and minor permitting processes and the Towns zoning ordinance. As a arecreational amenity, marinas would be permitted in the MR-3 district in conjunction with residential development. However, commercial marinas, boat launch, and dry astorage are not permitted or special uses in the zoning ordinance. Amendments to the ordinance are required to allow these uses. The MB-1 district is the appropriate location for commercial boating uses. However within this district, surrounding land uses and land and water conditions should be considered prior to permitting the uses on a specific site. Therefore, allowing commercial marinas, boat launch, and dry boat storage as a special use in the MB-1 district is recommended. The following factors should be considered in issuing special use permits for these uses: 1. Requirement for water location, potential conflicts with wetlands regulations, and potential water quality problems from runoff and discharges; 2. Heavy commercial nature of certain storage and repair operations associated with these uses; 6 3. Height of dry storage structures and their visual impact on surrounding uses; 4. Need for adequate maneuvering area for boat trailers and parking for users; and 5. Off -site impacts of noise and lights. 3.3 Allow only uses in the Estuarine Shoreline Area that comply with State standards and meet Q local requirements aIn Sunset Beach, the Estuarine Shoreline Area is defined as an area extending from mean high water along sounds, bays, and brackish waters landward for a distance of 75 feet. Within this area, CAMA regulations limit impervious surfaces and areas not allowing natural drainage to 30% of the area in the Estuarine Shoreline AEC? DAppendix II is a summary of the zoning ordinance's dimension requirements. Only three districts limit the percentage of impervious surface on a lot: MH-1 and MH-2 districts a limit impervious surface to 30%; the MR-3 and the MB-1 districts limit impervious surfaces for multifamily development to 65% of the area being developed under a central development plan. To improve consistency between the local CAMA permitting program and the zoning aordinance, it is advisable to add a provision to dimension requirements section of the use districts that limits impervious surface within the estuarine shoreline AEC to 30 percent. Q This requirement will also provide additional notice to property owners of the limitations within this AEC. Q 3.4 Allow uses in ocean hazards area that eliminate unreasonable danger to life and property The ocean hazards area in Sunset Beach includes three areas of environmental concern: aan Ocean Erodible Area, a High Hazard Flood Area, and Inlet Hazard Areas. The Town's policy to protect people and property from unreasonable danger in these areas appears to be well supported by on -going administration of local codes and the CAMA permitting processes. Z NCAC T15A:07H.0209 a 7 The Ocean Erodible Area (OEA) is the portion of the island where there exists a substantial possibility of excessive' erosion and significant shoreline fluctuation. The Land Use Plan indicates that the OEA extends landward from mean high water a distance (� of 320 feet. From evaluation of the Town's zoning map and the Composite Hazards Map U in the LUP, it appears that the OEA is included in the Beach Residential-1 and Beach Business-1 zoning districts. These districts restrict lot depths to 150 feet and do not permit development 125 feet seaward of the property line abutting Main Street. These restrictions effectively limit uses in the OEA to those that do not constitute a danger to Olife and property. a High Hazard Flood Areas include those portions of the island that are subject to high velocity waters having a 1 percent chance of being equaled or exceeded in any year. The High Hazard Flood Area identified in the LUP "comprises the entire oceanfront as well aas Bird Island and adjoining marshes bordering the Intracoastal Waterway on the western end of the island and land bordering Tubb's Inlet on the eastern end of the island." Section 155.46 of the Flood Damage Prevention Ordinance recognizes the special dangers to life and property in the High Hazard Area and establishes stringent a development requirements which are summarized below: 1. Location of buildings landward of the first line of stable vegetation and compliance with all other CAMA setbacks. 2. Elevation of buildings at least 1 foot above the base flood elevation. a 3. All space below the base flood elevation must be designed so as not to impede the flow of water. 4. Certification by registered engineer or architect that building is securely . anchored on pilings or columns and that foundation will resist the effect of wind and water loads. 5. Fill may not be used for structural support and may not be compacted. a 6. Alteration of sand dunes is not permitted. a Inlet Hazard Areas are those areas where inlet migration may present a danger to life O and property. Sunset Beach has two: Mad Inlet on the western end of the island and Tubb's Inlet on the eastern end. These hazard areas are shown on the Composite Hazards Map (Map 3) in the LUP. The LUP states that "Tubb's Inlet, in particular, has been subject to a great deal of fluctuation." a 8 . aPortions of the Inlet Hazards Area are covered by the FDP ordinance's special development requirements which are outlined above. However, CAMA's coastal management regulations have specific requirements for Inlet Hazard Areas. In addition to the overall use and development standards for Ocean Hazard Areas, development in athe inlet areas must meet the following requirements: 1. On lots created after July 23, 1981, permanent structures are limited to a density of one commercial or residential unit per 15,000 fee?. 2. Residential structures are limited to no more than four units and commercial structures are limited to no more than 5,000 feee. These requirements are implemented through the CAMA permitting program. a Q 3.5 Encourage efforts to preserve tree cover in new development and redevelopment The LUP states that even though the forests at Sunset Beach have been altered by adevelopment, existing tree cover "is a highly valued asset." To implement the tree preservation policy, the Town will need to make some amendments to its zoning aordinance and subdivision regulations. intends to study the feasibility of adopting a tree ordinance. aThere are two key points in the development process to achieve tree preservation: • The first is at the subdivision stage. At this point, the subdivider should delineate the site's tree cover and design site improvements in a manner that preserves as much of the existing tree cover as feasible. As a practical matter, installation of roads, utility easements, and site amenities such as golf courses and community centers will result in the removal of trees; however, careful site planning can result in the preservation of a large number of specimen trees and wooded areas. As described below, Sunset's existing subdivision regulations have provisions that, with minor adjustments, provide a workable tool for tree preservation. • The second is the construction stage where buildings and related uses are placed on the land. Preservation at this stage is generally subject to provisions of the zoning ordinance. Typical zoning provisions require tree removal permits to remove trees that are of a significant size and require maintenance of a minimum number of trees per acre after construction is complete. Like the subdivision regulations, the zoning 9 aordinance contains provisions that, with adjustments, can achieve the Town's tree preservation objectives. a Any adjustments to the Town's tree preservation provisions in the subdivision regulations and zoning ordinance should be as simple as possible. Otherwise it will be difficult to -administer and will place an undue burden on the Town's building officials. a3.5.1 Subdivision Regulation Requirements Section 153.019 (6) of the subdivision regulations provides a mechanism for preserving existing trees. The regulations require the developer to "show a plan for significant a stands of trees to be preserved; except where the entire site is wooded or largely wooded in which case the developer shall seek to retain as many trees as is practical." Significant stands of trees is defined as "stands of trees containing 5 or more hardwoods or 15 or more softwoods." This provision is interpreted to require the subdivider to preserve significant stands of trees where practical. Effectiveness would be improved by specifying the circumstances where removal of significant stands could be partially or totally removed. The following aare typical circumstances allowing tree removal: 1. Tree is diseased and/or is a treat to public safety. 2. Removal is required to install essential site improvement or required to allow the owner to enjoy reasonable use of the property. 3.5.2 Zoning Tree Preservation Requirements j Section 154.080 of the zoning ordinance requires property owners and/or business lJ owners to submit a landscaping plan and to install landscaping and buffering for new �? businesses or changes in business uses in the business districts (MB-1, BB-1, and MB-P). U The landscape plan requires the following information on existing trees: D1. Approximate locations and species of "all trees at least 8" (or more) in diameter and all flowering trees such as dogwoods 4" or more in diameter." 2. For groves of trees, applicants are allowed to show the locations on the plan and estimate the number and types of trees in each grove. 3. Trees larger than 10" located within a required buffer or planting area. a 10 a u 4. Plan must give reason for removalof existing trees. aAfter development, the equivalent of 15 trees per acre, either planted or retained, must remain on the site. These trees must be at least 2" in diameter measured 6" above the ground. If existing trees are retained to meet this requirement, they must be protected during construction. j The effectiveness of this provision can be improved by making the following changes: a 1. Hardwood trees with a diameter of 8" or larger and pines with a diameter of 12" or larger should be designated as regulated trees and permits should be required for their removal. Removal should be allowed for circumstances similar to those outlined for subdivisions: a) Removal is required to install essential site improvements, such as principal/accessory building, off-street parking, septic system and repair area, utilities, driveways, and site amenities. b) Tree is a threat to public safety or to the security of site improvements. 2. Tree preservation provisions should apply to business and multifamily residential uses in the MB-1, MB-P, and BB-1 districts and to multifamily uses in the MR-3 district. 3. Tree preservation should be incorporated into the site plan review requirements a for multifamily uses in the MR-3 district. 3.6 Allow off -site wastewater treatment systems a until centrals stem is available; require Y � package systems to connect when central 0 system available Off -site systems. The current practice of allowing off -site wastewater treatment systems is consistent with this policy. However, in reviewing the zoning ordinance, wastewater treatment systems (package plants) are not listed as either a permitted or a special use. To make the current practice consistent with the zoning ordinance, wastewater treatment plants should be included as a permitted use in the MR-3 and MB-1 districts. Additional a requirements should include minimum lot sizes to allow for adequate buffering of the 11 U plant from surrounding uses. Approval of the system by appropriate local and state n agencies should be a prerequisite for issuance of a building permit. U According to discussions with the Executive Director of SBWSA, State regulations on a setbacks from SA waters will prevent development of a package treatment plant on the Island. Therefore, including package plants as a permitted use in one or more of the Island zoning districts is not required. Interlocal agreements, to which Sunset Beach is a party, that already in place allow the (� SBWSA to require owners of septic tanks to connect to the central system when it is U available. Connect plants to the central system. "Package treatment plants"" are individually permitted by the State and are treated as utilities. Therefore, SBWSA does not believe that they can be forced to connect to a central system. The SBWSA is willing to have these systems connect, but the Authority would not purchase the collection system and the cost of connection would be borne by the system owner. Should the owner wish to retain ownership of the collection system, the Authority would be willing to provide "wholesale" treatment services. No amendments are needed. 3.7 Protect Town from adverse growth and development The land use policy is to "protect the Town from adverse growth and development by considering the following factors in development review: U • Land suitability • Capacity of the environment U • Compatibility with community goals • Density and height • Capacity of community services • Impact on Areas of Environmental Concern a • Location of hazardous areas with tendency for septic tank problems, flooding, and washover" 12 Amendments are required to incorporate these factors into preliminary plat approval provisions of Section 153.19 of the Subdivision Regulations and multifamily review provisions of Section 154.165 of the Zoning Ordinance. In addition, it is also necessary to insure that sufficient information is presented on plats and site plans to allow administrative staff, the Planning Board, and the Town Council to make decisions on these factors. The site plan requirements for multifamily review in the MR-3 zoning district provide an excellent outline of the required information. These plan requirements should be incorporated into the subdivision regulations either directly or by reference. U 3.8 Preserve the small town character of Sunset Beach; encourage development of a variety of Qhousing types Small town character. Review of the zoning ordinance, which is the major policy tool U for creating community character, indicates that its current provisions support j� preservation of Sunset's small town character. Typically the following characteristics are U ;associated withsmall.town characters • Definable town center • Compact development form • Residences close to town center a• Streets scaled for typical uses rather than oversized for maximum usage • Smaller -scaled buildings These characteristics are supportedb height limits, smaller lot sizes, and commercial Y Sh a zoning districts that allow mixed residential -commercial uses. Two definable town centers have developed. The older district at Sunset Blvd./Shoreline Drive has a resorthourist-oriented theme; the newer district at Seaside Rd./Sunset Blvd. Is more of a community -serving center that provides a broad range of commercial and personal services. Rather than additional building regulations, the town center character of these districts should be reinforced with improvements like sidewalks and streetscaping. a ordinance provides for an adequate range Variety of housing types. The current zoning p q a of housing types and densities: a 13 • Single-family detached housing from low to moderate densities • Duplexes • Multi -family townhouses • Garden apartments • Manufactured housing at moderate densities No changes are needed to support the policy. 14 0 � 4.0 BUILDING HEIGHT LIMITS AND � RESIDENTIAL DENSITIES U 4.1 Height Limits aThe LUP includes the following policy regarding building height limits: "...the building height on the mainland will predominantly be 35 feet with the exception of a 50-foot Obuilding height maximum limit for multifamily units in the MR-3 zoning district." a A second policy states that "The Planning Board and Town Council will study the feasibility of establishing a 50-foot building height limitation on the mainland which may only be changed by a public referendum." According to discussions with Town officials, athe intent of this policy is to study the feasibility of limiting the current zoning provision that allows unlimited building height increases above the base 35 feet if front and side yard setbacks are increased. The current zoning ordinance allows single-family dwellings and commercial buildings to exceed the 35-foot height limit if front and side yard setbacks are increased. The height increase is allowed at a ratio of 2-foot increase in height for every 1-foot increase in the front and side setbacks. There is no maximum height limit if the increased setback requirements can be met. Residential building hei hts--sin le-famil . 4.1.1 g g g y The illustration below shows the relative impact of increasing the height of a single- family dwelling from 35 feet to 45 feet. This illustration assumes that the buildings are alocated on the setback lines and that they have reasonable roof pitches. The building sketched on the right with a 7.5-foot side yard setback has a height limit of 35 feet; the a- - - -+w• ��- a 15 building on the left has a 12.5-foot side yard and can be 45 feet tall. From discussions with Town staff, it appears that this provision for increased height is rarely used, perhaps in fewer than five buildings. In cases where it has been used, very large single-family dwellings have been built on large lots. The estimated height of these dwellings is in the range of 42 feet. In addition, discussions with an experienced coastal architect indicate that a single-family house, built over a garage, would rarely exceed 45 feet. Therefore, additional limits on heights of single-family structures do not appear to be warranted. 4.1.2 Residential building heights —multifamily In the MR-3 district, the height limit for multifamily buildings is 50 feet with no allowances for additional height if setbacks are increased. However, there are additional setback requirements for multifamily buildings that are adjacent to the property line: • Where the multifamily project abuts a single-family project, multifamily buildings must be setback 40 feet from the property line. • Where the multifamily project abuts another multifamily project, the buildings must be setback 20 feet from the property line. • Where multifamily buildings abut an internal traffic way or parking facility, the buildings must be setback 20 feet from the traffic way or parking facility. 4.1.3Commercial building heights The MB-1 and the MB-P districts located on the mainland have height provisions identical to those of the single-family districts. Building heights may exceed the base limit of 35 feet if the front and side setbacks are increased 1 foot for every 2 feet increase in height. No changes in the MB-P district are warranted. Professional offices are the only permitted uses, and in a low density environment like Sunset Beach, these buildings would not be expected to exceed 35 feet. For most uses in the MB-1 district, there is no need to set additional height limits. Under current building and development practice, almost all commercial buildings are limited to no more than two stories, and in fact, most commercial buildings are limited to one story. Typical building heights can be observed in new commercial structures built in Sunset Beach in the last few years. Hotels, however, may be an exception. 16 Three key factors should be considered in the evaluation of height limits for hotels: 1) limitations of fire and rescue equipment; 2) water system fire flows and pressure; and 3) the economics of the project. a• According to the LUP, Sunset Beach VFD's tallest ladder is a 35-foot portable with an access height of 26 feet. The Ocean Isle FD has a quint truck with a 75-foot ladder. This truck is available through a mutual aid agreement. According to information from knowledgeable fire personnel, the truck could service a building of 4 to 5 stories 3 • Discussions with a consultant familiar with hotel development says that the typical a hotel developed in a community like Sunset Beach will have 4 to 5 stories above whatever elevation is required for flood insurance and that each story will require about 12 feet (ceiling heights, floor structures, mechanical, etc.). This indicates that height limits in the 48 to 60-foot range, plus the flood elevation, would accommodate most hotel developers. O• Evaluation of fire flows and pressure is beyond the scope of this study. The h p y p y y should be determined for a specific site when a development proposal is presented to the Town. The typical height of hotels appears to be consistent with the Town's fire/rescue capability. Therefore, the Town should consider establishing 60 feet as the maximum building height in the MB-1 district. a 4.2 Residential Densities a 4.2.1 Permitted residential densities Table 4.1 summarizes the residential densities permitted by the current zoning ordinance. a The zoning ordinance does not specify the maximum number of dwelling units permitted per acre. It does, however, set minimum lot sizes or building area for residential uses. aThe effect of these minimums is to establish a maximum density for each district. 3 This expert also stated that the best fire protection was the protection that was built into the astructure —protected means of egress and properly functioning sprinklers. 17 a ; Multifamily uses in the BB-1 district are an exception. The ordinance specifies minimum setbacks and a minimum building area of 750 square feet per unit. Assuming that the 35-foot height limit in this district will allow a 2-story building, these minimums are used to estimate the maximum density of 60 dwelling units per acre that is shown in the table. This theoretical maximum residential density appears to be high. A more appropriate density would be in the range of 35 units per acre for dwellings. With a minimum lot size of 4,500 square feet, this density, coupled with the minimum floor area of 750 square feet, would allow a quadraplex on a typical lot. The structure would include at least 3,000 square feet. TABLE 4.1 SUNSET BEACH BUILDING AND DEVELOPMENT ORDINANCE REVIEW MINIMUM LOT AREAS AND EFFECTIVE DENSITY Minimum lot area per Effective density dwelling unit (square (dwelling units per acre) Zoning District feet) MR-1 15,000 2.9 MR-2 ' 10,000 4.4 MR-2A 10,000 4.4 MR-3 Single-family 7,500 5.8 Multifamily 2,000 21.8 MB-1 Single-family 15,000 2.9 Multifamily . 2,000 21.8 MH-1 9,000 4.8 MH-2 6,500 6.7 BR-1 Single-family 7,500 5.8 Duplex 3,750 11.6 BR-2 4,500 9.7 BB-1 Single-family S. of Main 7,500 5.8 N. of Main 4,500 9.7 Multifamily` 714 60.0 AF-1 43,560 1.0 CR-1 21,780 2.0 `The BB-1 district does not set a minimum lot area per dwelling unit. This minimum and related density is a theoretical calculation based on an assumed lot of 50'X100', setbacks specified by the ordinance, 750 square feet of floor space per unit, and a two-story structure. 18 4.2.2 Comparison with other communities Table 4.2 summarizes the residential densities permitted by other similar coastal communities and provides a basis for comparing Sunset Beach's permitted densities. From this survey, the maximum densities permitted by the current zoning ordinance are comparable to those permitted in other communities, except for multifamily in the BB-1 district. The range of minimum lot areas for single-family dwellings is 5,000 to 20,000 square feet with an average minimum lot area of 9,300 square feet. For the average minimum lot, the maximum density is 4.7 dwelling units per acre. The range of minimum lot areas for multifamily is 1,450 to 4,270 square feet with an average of 2,400 square feet. The average of 2,400 square feet yields a maximum multifamily density of 18 dwelling units per acre. TABLE 4.2 SUNSET BEACH BUILDING AND DEVELOPMENT ORDINANCE REVIEW SURVEY OF RESIDENTIAL DENSITIES Residential Densities Effective density Community Lot sizes dues per acre Atlantic Beach Single-family - 5000 ft 8.7 Duplex - 6000 &2 14.5 Triplex - 8000 ft2 16.3 uadra lex - 10,000 ft 2 17.4 Emerald Isle Single-family - 12,500 ft 3.5 Duplex - 15,000 ft.2 5.8 Long Beach R-1 (beach areal Single-family - 7,500 ft2 5.8 Duplex - 10,000 ft2 8.7 R-2. R-3. and R-4 (single-family and mobile homes 6,600 ft2 6.6 R-5 and R-6 (single- and multi -family) Single-family - 6,600 &2 6.6 Duplexes - 9,900 ft2 8.8 Tri-plexes-13,200 ft2 9.9 4-6 units (per unit) - 2,200 &2 13.2 more than 6 units(per unit -1,100 ft2 27.6 Yaupon Beach R-20 (single-family) 20,000 8.2 22 R-9 (single-family) 9,000 ft.2 4.8 R-6 (single- and duplex) Single-family - 6,000 ft2 7.3 Duplex - 11,000 ft2 7.9 19 Ocean Isle Beach R-1 (sin le -family) 7,000 0 6.0 R-2 (single-family/duplex) Single-family - 7,000 ft2 6.0 Duplex - 7,000 ft 2 12.0 R-3 (sin le -family) 7,500 ft 2 5.8 C-1.2.3 (commercial/residential) No minimum lot 8.0 Holden Beach R-1 (single-family and duplex) Single-family - 6,000 8.2 7.3 Duplex - 7,500 ft2 11.6 R-2 (single- and multi -family) Single-family - 6,000 ft2 7.3 Duplex - 7,500 ft2 11.6 Multi -family 20.0 (1° two units - 7,500 ft2 each additional unit - 2,000 ft2 Wrightsville Beach R-1 (sin leg family) 8,000 fL2 5.4 R-1 S (single-family/duplex. low density) Single-family-15,000 ft2 2.9 Duplex - 25,000 ft2 3.5 R-2 (single- and multi -family) V single-family or duplex - 8,000 ft2 10.8 Each additional unit - 4,356 ft2 10.2 CC-1 No minimum lot 10.0 C-2 No minimum lot 10.0 C=3 No minimum lot 10.0 C-4 No minimum lot 30.0 4.2.3 Typical Golf Course Development a Projected development patterns on the Town's largest tracts of unsubdivided land suggest whether the densities allowed by the zoning ordinance are appropriate. The major unsubdivided tracts are zoned MR-3 and will be associated with -golf resort development. The pattern of development in these tracts will be a major factor in the future growth of the Town and the need to provide services. A study of golf course development by Hayes and Associates provides information for projecting future residential densities and total population on these tracts. The Hayes study is part of the SBWSA's Environmental Impact Statement for the regional sewer system. The results are shown in Table 4.3. This study indicates that overall, or gross, residential density in golf course developments is low. Of the courses studied, the average density is 2.3 units per gross acre. Subtracting acreage devoted to golf and open (� space, the net residential density is 3.8 units per acre. U 20 - If these averages are applied to the Angel's Trace tract as an example, then the following residential densities and total population can be expected: " Estimated Total Acreage g 636 acres Estimated Golf and Open Space Acreage 360 acres D Gross Residential Density 2.3 units per acre Net Residential Density 3.8 units per acre Projected Total Residential Units 1,050 to 1,460 Projected Total Populations 2,320 to 3,230 0 a TABLE 4.3 SUNSET BEACH BUILDING AND DEVELOPMENT ORDINANCE o REVIEW CHARACTERISTICS OF GOLF COURSE DEVELOPMENT 11 7 Development Total Golf Course Total Gross Densitv Net Density Acres Acres Residential total fmd (including non- Units units/total units/total golf open acres acres less golf s ace) course acres Brunswick 1,133 200 3,997 3.5 4.4 Plantation Meadowlands Golf 368 205 815 2.2 5.0 Club Magnolia 660 101 1,000 1.5 2.0 Plantation Ocean Ridge 1,300 852 2,532 1.9 5.7 Sandpiper Bay 529 200 894 1.7 2.7 Source: Hayes and Associates, "Human Environment Technical Memorandum", SBWSA EIS, August 1997. 4.2.4 Current development practices The usual approach to developing a golf course community is to create one or more r' separate residential subdivisions adjacent to the golf course. These subdivisions target . LJ various residential markets —retirement, resort, time share, family, multifamily, and so a on. A sample of densities in these separate subdivisions is presented in Table 4.4 All of these subdivisions are zoned MR-3 with a maximum multifamily density of 21.8 units per 21 acre and a maximum single-family density of 5.8 units per acre. The results of this sample indicate that the Town's current building patterns are yielding densities below those permitted by the zoning ordinance. The range of single-family densities in these subdivisions is 2.9 to 4.5 units per acre; the range for multifamily is 5.0 to 18.0 units per acre. TABLE 4.4 SUNSET BEACH BUILDING AND DEVELOPMENT ORDINANCE REVIEW SURVEY OF DEVELOPMENT DENSITIES Develonment/Subdivision Sawmill Townhouses River Creek I1, Phase 19 River Creek II, Phase 20 Sugar Mill Condos Osprey Watch Barony Place Wood Stork #1 Wood Stork #2 Crooked Gulley Predominant Housing Type MF MF MF MF MF SF SF SF SF 4.2.5 Recommendations for residential densities Approximate Density 18.0 units per acre 13.2 units per acre 10.9 units per acre 7.9 units per acre 5.0 units per acre 4.5 units per acre 3.9 units per acre 3.1 units per acre 2.9 units per acre Except for the residential densities permitted in the BB-1 district, the residential densities allowed by the current zoning ordinance appear to be consistent with the overall objective of maintaining the Sunset Beach's "small town character." In addition, no technical problems were identified in the review that require amendments. The following amendments to the BB-1 dimension requirements are recommended: • Minimum lot size of 4,500 square feet. • Minimum lot area per dwelling unit of 1,250 square feet These changes will yield a maximum density of approximately 35 dwelling units per acre. S Based on average household size of 2.21 as reported in the 1990 Census. 22 a The Town should monitor development in the tracts zoned MR-3. The maximum density aallowed in MR-3 is 21.8 units per acre. At the present time, overall density in these MR- 3 areas is not a problem. Current development patterns yield overall densities far below O the maximum. Development practices on land zoned MR-3 includes a variety of housing types at a range of densities from low to high. If practices change so that a significantly higher percentage of the residential units are high density, then the Town should consider alowering the permitted density in this district or reducing the amount of land zoned MR- 3. Rezoning would reduce flexibility and is less desirable than lowering overall density. a a a ni 0 5.0 THE PRD AND CONSERVATION ZONING 5.1 Planned Residential Development All of the mainland residential districts and the BR-2 district on the island allow "planned residential developments " (PRD) as a special use. The requirements for the PRD are actually set forth in the Subdivision Regulations, Section 153.30 - 153.65. PRD's are defined as "the total development of one tract of land under one control of ownership." The stated purpose of the PRD is as follows: "...allow development of land that has a higher degree of consideration of physical features and natural constraints to development than would be possible under general zoning and subdivision regulations. PRD is expected to promote a more efficient use of the land, a higher level of amenities, and more creative designs than would otherwise be possible. In each case the overall density of dwelling units shall be less than that permitted by the applicable zoning requirements." The purpose can be summarized as providing the subdivider/developer with flexibility in site planning so that natural features can be preserved and better land utilization can be attained. The PRD provision has been available to subdividers since 1982 and it has never been used. There are two key reasons that it has not been used. First, the requirements for site planning, approvals, and development require more time, effort, and risk than conventional subdivisions. The second, and more important reason, is that the MR-3 district allows subdividers/developers much more flexibility in planning and utilization of their property. Referring to Table 4.4, the MR-3 zoning allows the developer to produce a variety of housing types to meeting various markets without the rather rigorous process required by PRD. Developer interest in a PRD is doubtful for the foreseeable future. The Town should consider amending the ordinances to delete this provision. 24 5.2 Conservation Zoning Conservation design or conservation zoning may be a more effective approach to achieving the Town's PRD objectives. Conservation zoning may be described as designing residential subdivisions that maximize the conservation of open space without reducing overall building density. Typically, conservation design occurs within the density framework of the existing zoning and does not require complicated approvals. A recent New York Times article, "Looking for a Boomer Haven", indicates that the subdivision designed around open space systems may be the residential community favored by the 50-ish baby boomers. As a result, the interest in these types of communities in Sunset Beach may grow. The Town should consider including "conservation zoning" as a provision of the zoning ordinance. The following is a recommended approach to incorporated the conservation design concept into the zoning ordinance: • Use the "overlay district" as the means of permitting conservation design. The conservation design overlay should be overlaid on the mainland residential districts. The overlay allows the developer to choose the conservation design approach as an alternative to conventional subdivisions. • The permitted and special uses are the same as those uses allowed in the ` underlying zoning districts. • To accomplish the conservation design and to allow the developer flexibility, the overlay should allow a reduction in lot sizes. As a standard, conservation design lots should be no less than 70% of the minimum lot size for the underlying district. • The overall density of the conservation design should be no higher than that permitted by the underlying districts. Appropriate minimum setbacks should be established. a • An open space standard should be established. A minimum of 30% of the parcel under development is recommended. Preserved open space should not include land already excluded from development —wetlands, floodplains, etc. • Subdivision plat approval for conservation design should follow the same process as conventional subdivisions. a a6 Refers to interconnected open areas. a 25 O 5.0 Draft Ordinance Amendments After its review of the report summarizing the evaluation of Sunset Beach's building and P g g development ordinances, the Planning Board decided to proceed with ordinance Oamendments in four areas: 1. Preservation of significant trees in the subdivision and lot development processes; 2. Adding a provision for conservation design subdivisions in the zoning ordinance to encourage preservation of open space and asensitive environments; 3. Setting a maximum building height of 60 feet for buildings in the MB-1 district; and a4. Several minor administrative amendments to close gaps or to clarify. These ordinance amendments are provided in this section. Preliminary drafts of these amendments were reviewed with the Planning Board, and the Board's recommended a changes are included in the drafts presented here. The next step in this study process is review and recommendation of the amendments by a the Planning Board. After action by the Planning Board, the ordinances will be by Town Council. considered the 0 m a AMENDMENT TO THE CODE OF ORDINANCES OF THE TOWN OF SUNSET BEACH, NORTH CAROLINA THE TOWN COUNCIL OF THE TOWN OF SUNSET BEACH, NORTH aCAROLINA DOES ORDAIN: Section 1. That Chapter 154, ZONING CODE, of the Code of Ordinances of the aTown of Sunset Beach is amended by adding the following Section: Section 154.081, Preservation of Trees OThe purposes of this ordinance are: (a) to recognize the importance of mature trees to the quality of life; (b) to conserve energy and retard storm water runoff, (c) to safeguard and enhance property values and to protect public and private investment through protection of significant existing trees; and (d) to prevent the indiscriminant removal of trees. (A) DEFINITION REGULATED TREE. The subsurface roots crown and trunk of: (1) Any self-supporting woody perennial plant such as a large shade or pine tree, which usually has one main stem or trunk, and has a measured caliper as follows: i. A hardwood tree —eight (8) inches I A pine tree —twelve (12) inches (2) Any small flowering tree, such as dogwood, with a measured caliper aof at least four (4) inches. (B) TREE REMOVAL PERMIT REQUIRED (1) No person, directly or indirectly, shall remove any regulated tree from private property without first obtaining a tree removal permit as provided in this ordinance. The requirement for tree removal permits shall apply only to the following uses and zoning districts: (a) MR-3, all permitted and special uses except single-family residences, (b) MB-1, all permitted and special uses, except single-family residences, (c) MB-P, all permitted and special uses, except single-family residences, (d) BB-1, all permitted and special uses, except single-family residences, and (e) RI-1, all permitted and special uses, except single-family residences. (2) All persons seeking a permit for removal of a regulated tree shall make aapplications to the Building Inspector. a . 27 a I I 0 I I 0 0 (3) The Building Inspector shall issue tree removal permits if the applicant demonstrates one or more of the following situations: (a) For new construction, the applicant is able to show that essential site improvements cannot be installed without removal of the regulated tree(s). Examples of essential site improvements are the principal/accessory building(s), off-street parking, driveway, storm water management facilities, and septic system and repair area. (b) The regulated tree is dead, severely diseased, injured, or in danger of falling close to existing or proposed structures. (c) The regulated tree poses a threat an identifiable threat to individuals or public safety. (d) Removal of the regulated tree is necessary to enhance or protect the health of condition of adjacent trees. (4) Moving regulated trees is encouraged if adequate care is taken to ensure survival of the tree. (C) REQUIREMENTS FOR TREE REMOVAL PERMIT APPLICATION (1) Brief written description of the reason for removal of the tree(s); (2) A sketch plan of the site showing the approximate location of all regulated trees, or groups of trees, and that identifies their size, species, height, dripline, and health; (3) A description of the methods proposed to move a regulated tree, if applicable; (4) Photographs of trees, or groups of trees, to be removed; and (5) Any other information that may be required by the Building Inspector to issue the permit. In unusual situations, the Building Inspector may require a report from a Landscape Contractor or other knowledgeable professional regarding the health of a tree to be removed. Section 2. That the remaining sections and subsections of Chapter 154 shall remain as currently written. 28 AMENDMENT TO THE CODE OF ORDINANCES OF THE TOWN OF SUNSET BEACH, NORTH CAROLINA THE TOWN COUNCIL OF THE TOWN OF SUNSET BEACH, NORTH CAROLINA DOES ORDAIN: Section 1. That Chapter 153, SUBDIVISION REGULATIONS, Section 153.19 (6), of the Code of Ordinances of the Town of Sunset Beach is amended as follows: 446. Each phase of the planned development must show a plan for significant stands of trees that are to be preserved; except where the entire site is wooded or largely wooded in which case the developer shall seek to retain as many trees as is practical. "Significant stands of trees" shall mean any stands of trees containing five (5) or more hardwoods or fifteen (15) or more softwoods. In any case, removal of regulated trees will not be approved unless one or more of the following situations exist: i. The applicant is able to show that essential site improvements cannot be installed without removal of the regulated tree(s). Examples of essential site improvements are streets, underground utilities, driveway, storm water management facilities, and site amenities, and so on. ii. The regulated tree is dead, severely diseased, injured, or in danger of falling close to existing or proposed structures. iii. The regulated tree poses a threat an identifiable threat to individuals or public safety. iv. Removal of the regulated tree is necessary to enhance or protect the health of condition of adjacent trees. Regulated trees are defined as follows: The subsurface roots, crown, and trunk of: (a) Any self-supporting woody perennial plant such as a large shade or pine tree, which usually has one main stem or trunk, and has a measured caliper as follows: iii. A hardwood tree —eight (8) inches iv. A pine tree —twelve (12) inches (b) Anv small flowering tree, such as dogwood, with a measured caliper of at least four (4) inches. Section 2. That the remaining sections and subsections of Chapter 153 shall remain as currently written. 29 AMENDMENT TO THE CODE OF ORDINANCES OF THE TOWN OF aSUNSET BEACH, NORTH CAROLINA THE TOWN COUNCIL OF THE TOWN OF SUNSET BEACH, NORTH aCAROLINA DOES ORDAIN: Section 1. That Chapter 154, ZONING, of the Code of Ordinances of the Town of OSunset Beach is amended by adding the following section: CONSERVATION DESIGN OVERLAY DISTRICT a#154.270 PUROSE The purpose of the Conservation Design Overlay District is to encourage conservation design within residential zoning districts. Conservation residential design is an alternative method of designing a residential subdivision, at the density prescribed by the underlying zoning district, while preserving thirty (30) percent or more of the site as open space. Conservation design results in the more efficient use of land, lower site improvement costs, preservation of unique natural resources, conservation of land for open space, and an attractive and pleasing living environment. This district is intended to foster high quality site design and significant preservation of natural features and open space. Through the use of this overlay district, conservation design is permitted in residential zoning districts without an application for Planned Residential Development. #154.271 OVERLAY DISTRICT The Conservation Design Overlay District is overlaid upon the following aresidential districts within the Town of Sunset Beach and its extra territorial jurisdiction: MR-1 Mainland Residential District MR-2 Mainland Residential District MR-2A Mainland Residential District MR-3 Mainland Multifamily Residential District aThe effect of the Conservation Design Overlay District is to permit within these residential zoning districts conservation design subdivisions which comply with the provisions of the Overlay District, as an alternative to the subdivision permitted by the underlying zoning district. #154.272 PERMITTED USES Those uses permitted by right or by special use permit in the underlying zoning a district shall be permitted by right or by special use permit in the Conservation Design Overlay District. a 30 -O I #154.273 SITE DEVELOPMENT STANDARDS (A) Minimum lot size: 70 percent of the minimum lot size of the underlying district (B) Minimum setbacks: a Front yard-20 feet Side yards-5 feet Rear yard-15 feet (C) Lots abutting existing public streets or conventionally developed subdivisions shall have the same side and front yard setbacks as provided for in the underlying district. (D) The impervious surface provisions of the underlying district shall apply to the overlay district. (E) Open Space (1) A minimum of 30% of the total district area, after deducting all of the land "404" awithin the 100 year flood plain, wetlands, or coastal wetlands, shall be designated as permanent open space, not to be further subdivided, and protected aconservancy. through a conservation easement held by the Town or a recognized land trust or Retention and detention ponds and other such improvements required to manage the quality and quantity of runoff from the site may be located in the required open space area. a(2) Adequate areas within the required open space area shall be designated for active recreation but no more than 25 percent of the area shall be used for said purposes. The purposes for which open space is proposed shall be documented by the applicant. The impervious surface requirement of the underlying district shall apply to the area used for active open space. a (3) This requirement is in lieu of any other open space and recreation requirements. #154.274 APPLICATION PROCESS aWhenever a Conservation Design Subdivision is proposed, the procedures and standards of Section 153.45 through 153.52 of the Subdivision Regulations shall apply. Section 2. That the remaining sections and subsections of Chapter 154 shall remain a as currently written. a 31 I aAMENDMENT_ TO THE CODE OF ORDINANCES OF THE TOWN OF SUNSET BEACH, NORTH CAROLINA THE TOWN COUNCIL OF THE TOWN OF SUNSET BEACH, NORTH . CAROLINA DOES ORDAIN: Section 1. That Chapter 154, ZONING, of the Code of Ordinances of the Town of Sunset Beach is amended as follows: a. By adding offsite septic tanks, approved by the Brunswick County Health Department as a permitted use in the following zoning districts: a#154.191, #154.131 (K), MR-1 Mainland Residential MB-P, Mainland Business —Professional #154.201 (E), BR-1, Beach Residential a#154.231 #154.211 (F), BR-2, Beach Residential (E), MH-2, Manufactured Home Residential District #154.241 (0), RI-1, Recreation and Institutional District #154.251 (G), AF-1, Agriculture —Forestry District #154.261 (J), CR-1, Conservation Reserve District b. By adding package treatment plants as a permitted use in the MB-1, Mainland Business District, Section 154.176(6) and the MR-3, Mainland Multifamily Residential District, Section 154.161(G) as follows. aPackage treatment plants that meet the following requirements: (a.) Minimum lot of 20,000 square feet; (b.) Security fence installed around the perimeter of the lot; (c.) Installed buffer around perimeter of the lot that meets provisions of 154.080 (F); (d.) " Approval by the North Carolina Division of Water Quality; and (e.) . No objectionable odors, noise, and/or lighting. a c. By adding electric utility substations as a special use in the MB-1, Mainland Business District, Section 154.177(6) and the MR-3, Mainland Multifamily Residential District, Section 154.162(E) as follows: Electric utility substations may be allowed outside of the public right-of-way. Such stations may not create excessive noise or light, or possess other objectionable characteristics that may be detrimental to surrounding uses or to other uses permitted in the district. The Board of Adjustment may impose any reasonable conditions on the use that may be required to protect surrounding a properties and other uses within the district. The station must be screened according to the requirements of 154.080(F). O 32 d. By revising Section 154.202(A) as follows: "Minimum required lot area per single-family dwelling is 7,500 square feet and per duplex dwelling is 15,000 square feet." e. By adding unattended telephone communication facility as a special use in the following districts: MR-1 (Mainland residential) MR-2 (Mainland residential) MR-2A (Mainland residential) MR-3 (Mainland multifamily residential) MB-1 (Mainland business) MB-P (Mainland business -professional) BB-1 (Beach business) MH-1 (Manufactured home district) MH-2 (Manufactured home district) AF-1 (Agricultural -forestry district) RI-1 (Recreational -institutional district) Unattended telephone communication facility is a small windowless structure housing telephone equipment that does not require regular employee attendance for operation. Section 2. That the remaining sections and subsections of Chapter 154 shall remain as currently written. 33 AMENDMENT TO THE CODE OF ORDINANCES OF THE TOWN OF SUNSET BEACH, NORTH CAROLINA THE TOWN COUNCIL OF THE TOWN OF SUNSET BEACH, NORTH CAROLINA DOES ORDAIN: Section 1. That Chapter 154, ZONING, of the Code of Ordinances of the Town of Sunset Beach is amended as follows: By rewriting #154.178(A)(2), Height of Buildings, to read: "No building or structure shall be more than 35 feet in height. (See definitions #154.003) A building or structure may exceed 35 feet in height only on the condition that it shall be set back, in addition to any other yard requirements, from the front and from each side lot line on a ratio of one (1) foot for each two (2) feet rise above 35 feet in height. Under no circumstances shall the height of buildings exceed 60 feet." Section 2. That the remaining sections and subsections of Chapter 154 shall remain as currently written. 34 APPENDIX I SUNSET BEACH BUILDING AND DEVELOPMENT ORDINANCE REVIEW SUMMARY OF LAND USE AND DEVELOPMENT POLICIES Description of Development Policy Implementation Tool Resource Protection • Restrict land uses in coastal wetlands and marshes to those that are water • Land development dependent and that conserve and protect —examples are dock, piers, regulations and moorings, and so on. CAMA permitting • Support appropriate development of boat launching and dry storage • Zoning ordinance facilities to protect estuarine waters —upland excavation not permitted. amendment • Projects which interfere the public's right to use public trust waters will • Land development not be allowed —examples are impairing navigation channels, increasing regulations and shoreline erosion, depositing spoils below MHW, or degrading shellfish CAMA permitting waters. • Allow only uses in the Estuarine Shoreline Area that comply with State • Land development standards and meet local requirements —no weakening of natural erosion regulations and barriers, no interference with public trust access, no runoff increase, no CAMA permitting pollution generated, compliance with Soil Erosion/Sedimentation Control Standards. • Allow uses in ocean hazards area that eliminate unreasonable danger to • Land development life and property —small structures with proper setbacks, protection of regulations and frontal dune and vegetation, compliance with minimum lot sizes and CAMA permitting setbacks established by local ordinances, and minimize adverse impacts on environment. • Review development plans for areas that contain remnant species • Land development (classified Conservation) prior to issuance of development permits. regulations and CAMA permitting • Protect prime wildlife habitats. • CAMA permitting • Encourage efforts to preserve tree cover in new development and • Zoning ordinance redevelopment. • Encourage documentation of archaeological sites prior to development. Zoning and Subdivision Regulations —Develop - went review process —maintain information regarding sites and make it accessible • Allow off -site wastewater treatment systems until central system is • Subdivision available. Regulations • Require corrective measures for foundations in areas with limitations for • Building Code building foundations. 35 APPENDIX I (continued) • Require compliance with Flood Damage Prevention Ordinance • Flood Plain Ordinance • Allow package waste water treatment systems —connect to central system • Subdivision when available. Regulations • Reduce storm water runoff by enacting improved controls. • Regional storm water management plan SBWSA Resource Production and Management • Prohibit mineral production and extraction activities of any kind. • Zoning Ordinance • Insure that proper and adequate measures are incorporated into design, • Zoning and construction, and operation of residential and commercial development to subdivision minimize substantial impacts on the coastal ecosystem. regulations, installation of community facilities, and CAMA permitting Economic and Community Development • Protect Town from adverse growth and development by considering • Development review following factors in.development review: through zoning and ... Land suitability subdivision ... Capacity of environment regulations; orderly ... Compatibility with community goals and objectives installation of ... Density and height infrastructure and ... Capacity of community services provision of services ... Impact on AEC's ... Location of hazardous areas with tendency for septic tank problems, flooding, and washover. • Preserve the small town character of Sunset Beach —preserve and • Zoning and improve quality of natural and manmade environment. Encourage growth Subdivision patterns that reinforce existing residential and commercial development Regulations and that protect the environment. • Encourage development of a variety of housing types to meet the • Zoning and needs/desires of current and future residents: subdivision Maintain areas exclusively for single family residences regulations ... Retain predominantly single family residential character of the Island —restrict conversion of single family to duplexes to lots bordering beach strand or the BB-1 zoning district ... Retain 35-foot height limit on Island ... Allow multifamily and condominium development in golf course developments and as permitted by MB-1 and BB-1 zoning districts ... Provide areas for manufactured homes on the mainland • Study feasibility of establishing a 50-foot height limit on the mainland _ • Planning Board and with changes allowed only by referendum. Town Council studies • Study feasibility of establishing residential density limits for each zoning • . Planning Board and district. Town Council studies 36 APPENDIX I (continued) • Study feasibility of revising zoning ordinance and subdivision regulations to promote conservation of natural areas. • Planning Board and Town Council studies • To enhance the quality of commercial development the Town will require • Zoning, subdivision, adequate buffering between commercial and residential uses and sign, and landscaping encourage commercial development in nodes to avoid strip development ordinances patterns. • Redevelopment of previously developed areas should conform to existing • Zoning and development requirements. subdivision regulations 37 Appendix H. Sunset Beach Building and Development Regulation Review Zoning Ordinance Review 4nmmary of Mainland Residential District Requirements MR-1 Mainland MR-2 Mainland MR-2A Mainland MR-3 Mainland MB-1 Mainland Business Residential Residential Residential Multifamily Residential Uses Purpose For single family Same as MR-1 but Same as MR-1 but For either multifamily or For moderately intensive dwellings built onsite and providing for higher allowing decreased front single family dwellings commercial and service to discourage traffic on residential density yard setbacks and to discourage traffic uses to serve a regional minor streets on minor streets market; also allows residential uses Typical Permitted Uses Single family dwellings, Same as MR-1 Same as MR-1 Multifamily dwellings Offices, retail sales, golf courses, and related and any uses permitted in convenience retail, uses the MR-1 district personal services, lodging, and entertainment; in le - and multi -family residential uses Typical Special Uses P PRD PRD PRD Dimension/density MAhL Single Multi- Single Requirements f-- BY family family family Min. lot sizes .ft. 15,000 10,000 10,000 40 000 7,500 40,000 15,000 Min. lot area per units .ft. 2,000 - 2 000 Min. mean lot width ft. 75 75 75 - 1 75 Min. front yard ft. 50 50 25 25 25 25 50 Min. side yard ft. 7.5 7.5 7.5 40" 5 40 7.5 Min. rear yard ft. 25 25 25 25 25 25 25 Maximum impervious - 65"' 65' surface Min. building floor area 1,800 1,000 1,000 750 1,000 750 1,800 s .ft. Max. bedrooms Set by septic rules Set by septic rules Set by septic rules - - Max. building height ft 35 35 35 50 35 50 35 Dwelling unit density 2.9 4.4 4.4 21.8 5.8 21.8 2.9 permitted (dwellings per net acre Estimated population density 10.6 16.0 16.0 83.3 20.9 83.3 10.6 permitted(persons per acre " Appendix II. (continued) BR-1 Beach Residential BR-2 Beach Residential BB-1 Beach Business"' AF-1 Agricultural- CR-1 Conservation Forestry District Reserve District Purpose Same as for the MR-1 Same as for the MR-1 Primary purpose is to Prohibit use of the land Provide for effective district but providing for district accommodate businesses that substantially long-term management of 2-family dwellings to serve beach area; also interferes with significant, limited, or allows compatible agricultural, horticultural, irreplaceable resources residential uses or forestry use Typical Permitted Uses Single family and two- Single family dwellings Single family and multi- Agricultural, Detached single family family structures built built onsite family dwellings horticultural, and forestry dwellings in upland areas onsite uses, single family dwellings, public buildings, and golf courses Typical Special Uses PRD (See business district PRD Community facilities and descriptions) public works facilities Dimension/density Requirements Multi-famil Min. lot sizes .ft 7,500 4,500 43,560 21,780 Min. lot area per units .ft. Min. mean lot width(ft.) - 75 Min. front yard (k) - 25 25 50 50 (25 ft. from CAMA setback for ocean lots Min. side yard ft. 10% of lot width`' 5""' S 12 feet abutting street 7.5 Min. rear yard ft. 25 5 5 25 25 Min. building floor area 1,250 1,000 750 1,800 s .ft. Maximum impervious - - surface Max. bedrooms 8 4 Set by se tic rules 8 Max. building height ft. 35 35 35 35 35 Dwelling unit density S-F 5.8 9.7 11.6 1.0 1.0 dwellings per net permitted (dwellings per net M-F 11.6 buildable acre` acre Estimated population density S-F 40.0 70.5 M-F 2.3 . 2.2 774.0] permitted(persons per acre' M-F 2.3 ! ! ! ! ! f♦ ! f• t� ! ! ! ! ! ! ! ! ! Appendix II.. (continued) MH-1 Manufactured MH-2 Manufactured Home -Conventional Home Residential Home District District Purpose For manufactured Principally for home and manufactured homes conventional single family homes Typical Permitted Uses Single -wide and Double -wide double -wide manufactured homes manufactured and conventional single family dwellin e Typical Special Uses - - Dimension/density Requirements Min. lot sizes .ft. 9,000 6,500 Min. lot area per unit - - s .ft. Min. mean lot width ft. 60 60 Min. front yard ft. 50 50 Min. side yard ft. 6m 6 Min. rear yard ft. 20% of depth up to 25' 10% of depth up to 20' Min. building floor area S-F = 850 Double -wide = 864 (sq.ft.) Single -wide = 600 Double -wide = 864 Maximum impervious 30 30 surface Max. bedrooms - - Max. building height ft. 35 - Dwelling unit density 4.8 6.7 permitted (dwellings per net acre Estimated population 17.5 24.4 density permitted (persons per acre' Appendix II. (continued) MB-1 Mainland Business (Residential MB-P Mainland Uses) Business -Professional BB-1 Beach Business Purpose For moderately Provide attractive Provide a wide range intensive commercial setting for traditional of commercial uses to and service uses to professional offices serve the beach serve a regional that generate low community and to market; also allows traffic volumes; minimize adverse residential uses located on major impacts; single family thoroughfare and multi -family uses Typical Permitted Uses Offices, retail sales, Offices for any Restaurants, lodging, convenience retail, qualified professional beach -related retail personal services, except those that uses, beach rentals, lodging, and require boarding of public uses, and entertainment; sin le- animals, generate offices; single family and multi -family chemical wastes in uses residential uses labs, or require outside storage Typical Special Uses Primarily - Similar to those entertainment -type permitted in the MB-1 businesses with district potential conflicts —noise, hours of operation, traffic, and safety hazards Dimension/density Requirements Min. lot sizes .ft. 6,000 20,000 4,500 Min. mean lot width ft. 50 100 Min. front yard ft. 50 5 Min. side yard (ft.) 5 (on side abutting 8 (abutting a 5 street) residential use or 8 (side abutting zone) residential use or zone Min. rear yard (ft.) 20 (abutting residential 20% of the lot depth 5 use or zone Max. building height ft. 35 35 35 Maximum impervious - - - surface % Appendix II. (continued) Notes: To be effective, these local regulations must meet three requirements: 1) provisions should be consistent with the goals and intent of the plan; 2) where appropriate, local regulations should be linked for mutual support; and 3) provisions should support and be consistent with the State's coastal management program. that are closely linked to local building and development ordinances for implementation. To implement these policies, local codes must After a preliminary review of these policies and local codes and ordinances, fifteen policies were identified for further evaluation Table 2.1 provides an overview of the LUP's key land use and development policies. The subdivision regulations also require a small five-foot natural buffer adjacent to streams. The intent of this requirement is not stated;. however, it appears to be a requirement designed to preserve and enhance water quality by reducing sedimentation and nutrients in run-off. ' PRD = Planned Residential Development 20-foot required separation between buildings; setback from property line can be reduced to 20 feet if abutting another multifamily development. MR-3 district does not contain specific limits on impervious surfaces. For multifamily developments, the ordinance requires that 35% of the entire area being developed under one central development plan contain common open space. Fifty percent of the common open space must be devoted passive uses. Parking is defined as a passive use. " MR-3 district does not contain specific limits on impervious surfaces. For multifamily developments, the ordinance requires that 35% of the entire area being developed under one central development plan contain common open space. Fifty percent of the common open space must be devoted passive uses. Parking is defined as a passive use. 'Population density estimate combines permanent and seasonal population per dwelling unit from CAMA Land Use Plan. ." Single family uses have same dimension requirements as BR-1 south of Main Street and BR-2 north of Main Street. Dimension requirements for multifamily are described in district. Side abutting public street may have 5-foot yard; lot owner of record must have 5-foot minimum sideyards. ' 12 feet required when abutting public street. ix Net buildable acre excludes any wetland or area within setback required by CAMA. " Both MH-1 and MH-2 districts require mobile homes placed in the districts to be no older than 8 years. �' 10-foot side yard required when abutting street.