Standards for development

A. Uses.
- (1) Permitted uses: only multifamily structures and their accessory uses.
- (2) Accessory uses may include indoor and outdoor parking facilities, a club, a golf course, playground, bathing beach, a swimming pool, and necessary public and semipublic uses, but shall not include any other residential uses, office uses, restaurant and entertainment uses, commercial uses, wholesale business and storage, industrial uses, home occupations, professional office of resident, and storage of commercial vehicles or recreational equipment (unless stored within a building).
B. Intensity regulation. The following schedule of intensity regulations shall apply to multifamily dwelling or apartment uses:
[Amended 11-10-2003 by Ord. No. 2003-15]
- (1) The minimum lot area required for multifamily or apartment dwellings shall consist of not less than the following minimum lot net area requirements (net acre) after freshwater wetlands, wetland buffers, and slopes in excess of 8% have been deducted from the land area calculation:
  - (a) R-10: two net acres, minimum.
  - (b) R-7: one net acre, minimum.
- (2) The maximum number of dwelling units for multifamily or apartment dwelling uses shall be a maximum of 10 units per net acre in an R-7 Zoning District and five units per net acre in an R-10 Zoning District.
- (3) No more than 12 dwelling units shall be permitted in a multifamily or apartment structure.
- (4) No more than six, three-bedroom dwelling units or apartments shall be permitted for every 12 dwelling units located in a multifamily or apartment structure, unless a variance has been granted by the Zoning Board of Review.
- (5) No multifamily or apartment structure shall contain any dwelling units in excess of three bedrooms, unless a variance has been granted by the Zoning Board of Review.
- (6) Minimum street frontage. The minimum street frontage shall be in proportion to the average lot width, to the average lot depth at a ratio of 1:2.5. In no case shall the minimum street frontage be less than 140 feet.
- (7) Minimum yard depths:
  - (a) Side yard.
    - [1] For a one-story structure: 30 feet each side.
    - [2] For a two-story structure: 40 feet each side.
    - [3] For a three-story structure: 50 feet each side.
  - (b) Front yard and rear yard.
    - [1] For a one-story structure: 40 feet.
    - [2] For a two-story structure: 50 feet.
    - [3] For a three-story structure: 60 feet.
  - (c) Maximum height of a multifamily or apartment structure shall be no more than three stories and shall be no more than 35 feet.
  - (d) Minimum setback from lot lines for accessory structures in side and rear yards shall be 30 feet. No accessory structures shall be permitted in the required front yard.
  - (e) Maximum height of accessory structures shall be 25 feet.
  - (f) Minimum open space. There shall be permanently maintained a minimum open space of 25 feet from any adjacent property line or right-of-way line. Said open space shall not be paved for parking and may not be used for leaching or absorption fields; however, easements for water lines and driveways for access to parking areas are permitted. A vegetated buffer of 10 feet, minimum, and/or appropriate screening fence shall be installed between the multifamily development and the abutting side and rear properties. The design for said buffer shall be in accordance with the landscaping provisions of this chapter and the Land Development and Subdivision Review Regulations of the Town of Johnston.
    Editor's Note: See the current Subdivision Regulations on file in the Town offices.