§ 165.01-02  Dimensional Standards in the Zoning Districts.
   Unless otherwise specified, all principal and accessory structures in the zoning districts are subject to the dimensional standards set forth in Table 165.01, Dimensional Standards.
 
TABLE 165.01: DIMENSIONAL STANDARDS (1)
ZONING DISTRICT/USE
LOT AREA
SETBACKS (2)
MAX. HEIGHT (9)
Density
(DU/Sq. Ft.)
Max. Lot Coverage
Min. Lot Area
(Sq. Ft.)
Min. Lot Width
(Ft)
Front
(Ft)
Each Side
(Ft)
Rear
(Ft)
RESIDENTIAL SINGLE-FAMILY (RSF)
All uses
1/10,500
35% of high ground
10,500 per dwelling
70
10
14.3% of lot width (8)
10
34' above the top of the first living floor surface
RESIDENTIAL TWO-FAMILY (RTF)
All uses
1/5,250 (up to 4 per acre max.)
35% of high ground
5,250 per dwelling
70
10
14.3% of lot width (8)
10
34' above the top of the first living floor surface
RESIDENTIAL MULTI-FAMILY (RMF)
All uses
1/3,500 (up to 12 per acre max.)
35% of high ground
3,500 per multi- family dwelling unit
70
10
5
10
24' above the top of the first living floor surface (4)
MARSH INLAND RESIDENTIAL (MR)
All uses
1/14,500
30% of high ground
14,500
70
25
15
25
34' above the top of the first living floor surface
DOWNTOWN COMMERCIAL (DC)
Single- and two- family uses
1/10,500 (up to 4 per acre max.)
50% of high ground (3)
10,500
35
10 (5)
5
10
34' above the top of the first living floor surface (4)
Multi-family uses
1/3,500 (up to 12 per acre max.)
3,500 per multi- family dwelling unit
None required
(5)
None required except when abutting RSF, RTF or RMF; then greater of ½ structure height or 15 feet
Outdoor retailers
 
2,625 per outdoor retailer
 
All other uses
N/A
5,250
34' above the top of the first living floor surface (4)
ISLAND COMMERCIAL (IC)
Single- and two- family uses
1/10,500 (up to 4 per acre max.)
35% (3)
10,500
70
10
5
10
34' above the top of the first living floor surface (4)
 
 
3,500 per unit
All other uses
N/A
5,250
None
None required except when abutting RSF, RTF, or RMF; then greater of ½ structure height or 15 feet
34' above the top of the first living floor surface (4))
MARINE COMMERCIAL (MC)
Single- and two- family uses
1/10,500 (up to 4 per acre max.)
35% (3)
10,500
35
10
5
10
34' above the top of the first living floor surface (4)
All other uses
N/A
None
(6)
34' above the top of the first living floor surface (4)
CORRIDOR COMMERCIAL (CC)
Single- and two- family uses
1/10,500 (up to 4 per acre max.)
35% (3)
10,500
50
10
5
10
24' above the top of the first living floor surface
Multi-family uses
12
3,500 per unit
All other uses
N/A
35% (3)
5,250
50
None
None required except when abutting RSF, RTF, or RMF; then greater of ½ structure height or 15 feet
34' above the top of the first living floor surface (4)
CONSERVATION (CN)
All uses (7)
N/A
5%
10,500
20
10
10
25
Lesser of one story or 20' above BFE
PLANNED DEVELOPMENT (PD)
See § 163.05
NOTES:
(1)   Uses may also be subject to district-specific standards (Chapter 163), use-specific standards (Chapter 164), or design standards (Chapter 166) that further limit these standards.
(2)   Required setbacks may be increased in accordance with the standards in § 166.04-03, Marsh Buffers, and § 166.04-04, Beach and Dune Management Area (if applicable).
(3)   Single- and two-family structures are subject to maximum floor area ratio limitations in § 166.05-03, Single-and Two-Family Design Standards (as appropriate).
(4)   Multi-family uses are limited to a maximum of two stories (measured from the top of the first living floor surface).
(5)   New development fronting Center Street shall be built to the edge of the street right-of-way, to the maximum extent practicable.
(6)   There is no minimum lot size except where required by DHEC for on-site wastewater facilities.
(7)   There shall also be a setback of 25 feet from the OCRM critical line in the CN district.
(8)   Setbacks in the RSF and RTF zones shall be a minimum of five and a maximum of ten feet.  Eaves may extend into the required setback up to 18".  HVAC platforms may extend into the required setback up to 5' on side of the structure, but cannot be located on both sides.
(9)   Max height shall not exceed height regulated in § 90.05.
 
(Ord. 05-10, passed 3-23-10; Am. Ord. 25-12, passed 3-12-12; Am. Ord. 03-13, passed 4-9-13; Am. Ord. 02-19, passed 4-9-19; Am. Ord. 03-19, passed 4-9-19; Am. Ord. 16-19, passed 4-9-19; Am. Ord. 11-21, passed 5-11-21)