Permitted Uses and Development Standards for the RS-12 Single-Family Residential District
The RS-12 Single-Family Residential district in the City of Concord is primarily designated for single-family residential development, permitting detached single-family dwellings as a use allowed by zoning clearance. Additional uses, such as residential care facilities and specific accessory uses, are permitted subject to administrative permits or use permit approvals, while industrial and heavy commercial uses are generally prohibited.
Allowed Uses in the RS-12 District
The RS-12 zoning district is part of the Residential Single-Family classification [Section 18.15.020, Table 18.15.020]. Uses permitted in this district are governed by the requirements outlined in Table 18.30.020 [Section 18.30.020].
| Land Use Classification | Permit Required | Additional Requirements |
|---|---|---|
| Bed and Breakfast Inn | UP | |
| Single-Family, Detached | ZC | |
| Single-Family, Attached | UP | Chapter 18.152 |
| Family Day Care Home (14 or fewer children) | ZC | |
| Home-Based Business | ZC, AP | CDC 18.200.100 |
| Residential Care Facility, Small | ZC | |
| Residential Care Facility, Large | UP | |
| Residential Facility for Seniors, Assisted Living | UP | |
| Supportive Housing | ZC, UP(1) | CA Gov. Code Section 65650 |
| Park and Recreation Facility | ZC | |
| Residential Recreation | ZC | |
| Religious Facility | UP |
Key: ZC = Zoning Clearance (Permitted Use); AP = Administrative Permit; UP = Use Permit; MP = Minor Use Permit.
Development Standards for the RS-12 District
The RS-12 district adheres to the following development standards as established in Table 18.30.030 [Section 18.30.030].
| Standard | RS-12 Requirement |
|---|---|
| Density (du/net acre) | 0 – 10 (minimum/maximum) |
| Minimum Lot Area (sq. ft.) | 12,000 |
| Minimum Lot Width (ft.) | 100 |
| Minimum Lot Depth (ft.) | 85 |
| Maximum Lot Coverage (%) | 25 |
| Maximum Building Height (ft.) | 30 |
Minimum Setbacks for RS-12
The following minimum setback requirements apply to structures within the RS-12 district [Section 18.30.030]:
- Front Setback: 20 feet
- Interior Side Setback: 10 feet minimum
- Aggregate Side Setback: 20 feet
- Corner Side Setback: 15 feet
- Rear Setback: 25 feet
Development Notes and Definitions
- Net Acre: A net acre is the portion of a site that can be built on, typically calculated as the gross lot area minus land used for access, streets, trails, open space, or easements [Section 18.15.030].
- Lot Coverage: This limit applies to the portion of a lot covered by structures, including principal and accessory buildings, garages, and carports, but excludes unenclosed, unroofed decks, landings, or balconies [Section 18.20.030].
- Setback Measurement: Setbacks are measured from the property line or back of sidewalk (whichever is less) to the face of the building or structure [Section 18.30.030].
Sections Cited
- Section 18.15.020: Zoning map and districts
- Section 18.20.030: Definitions
- Section 18.30.010: Purpose (Residential Districts)
- Section 18.30.020: Residential districts – Allowed uses and permit requirements
- Section 18.30.030: RR and RS districts – Development standards