§ 18-4-301. Bulk regulations.
   Except as provided otherwise in this article, the following bulk regulations are applicable in an RA District:
Minimum lot size
40,000 square feet
Maximum coverage by structures
25% of gross area
Minimum width at front building restriction line; for waterfront lots the building restriction line is measured from the rear lot line
150 feet
Minimum setbacks for principal structures:
   Front lot line
40 feet
   Rear lot line
35 feet
   Side lot line
15 feet
   Combined side lot lines
40 feet
   Corner side lot line
40 feet
P   rincipal arterial or higher classification road
50 feet
Minimum setbacks for accessory structures other than sheds that do not exceed 64 square feet in area and eight feet in height:
   Front lot line
50 feet
   Side and rear lot lines
15 feet or, for structures less than 8 feet in height (other than swimming pools, tennis courts, basketball courts, and similar private recreational facilities accessory to single-family detached, duplex, or semi-detached dwellings), 10 feet
   Corner side lot line
40 feet
Maximum height limitations:
   Principal structures
45 feet
   Accessory structures
45 feet if all setbacks are increased by one foot for each foot of height in excess of 25 feet
   Maximum density
One dwelling unit per 20 acres plus one additional dwelling unit for residue acreage that exceeds 10 acres and, for sites over 50 acres, one additional dwelling unit for every 50 acres and one additional dwelling unit for residue acreage that exceeds 25 acres
Cluster development:
   Minimum lot size
20,000 square feet
   Maximum lot size
120,000 square feet
   Minimum width at front building restriction line
80 feet
   Minimum setbacks for principal structures:
      Front lot line
5 feet, but if parking is located in the front yard, 18 feet
      Rear lot line
15 feet
      Side lot lines
10 feet
      Boundary line of the cluster development site
50 feet from adjacent residentially zoned and developed property, except that the setback may be reduced by the Planning and Zoning Officer to preserve environmental features and the setback may be reduced to 25 feet if the adjoining lot is an open space lot created under § 17-6-111 of this Code
   Minimum setbacks from side and rear lot lines for accessory structures other than sheds that do not exceed 64 square feet in area and eight feet in height
10 feet or, for structures less than 8 feet in height (other than swimming pools, tennis courts, basketball courts, and similar private recreational facilities accessory to single-family detached, duplex, or semi-detached dwellings), 5 feet
 
(Bill No. 4-05; Bill No. 78-05; Bill No. 60-10; Bill No. 93-12)