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RR-20 Rural Residential Zoning District Regulations in the City of Concord

Jurisdiction: ConcordCode Version: February 10, 2026

The RR-20 Rural Residential district is designed for rural single-family residential development at a maximum density of 2.5 units per net acre. Within the RR-20 district, property owners must comply with specific development standards, including a minimum lot size of 20,000 square feet and defined setbacks for primary structures.

Purpose and Applicability of the RR-20 District

The RR-20 Rural Residential district is established to accommodate rural single-family residential development and clustered development. This district implements the rural residential land use designation of the City of Concord General Plan [Section 18.30.010]. Development in the RR-20 district must adhere to the requirements of the Concord Development Code to ensure the protection of public health, safety, and welfare [Section 18.10.020].

RR-20 Development Standards

New uses, structures, and alterations in the RR-20 district must comply with the development standards specified in the following table:

Standard RR-20 Requirement
Density (du/net acre) 0 – 2.5 (minimum/maximum)
Minimum Lot Area 20,000 square feet
Minimum Lot Width 100 feet
Minimum Lot Depth 100 feet
Maximum Building Height 30 feet
Front Setback 25 feet
Interior Side Setback 10 feet
Aggregate Side Setback 25 feet
Corner Side Setback 15 feet
Rear Setback 30 feet

Note: For RR-20 residential developments, the maximum lot coverage is 20 percent [Section 18.30.030].

General Requirements and Land Use

To establish a land use in the RR-20 district, the use must be allowed in the district and adhere to the permit requirements identified in the Concord Development Code [Section 18.25.020]. Development on any lot must also be consistent with the city’s subdivision ordinance and, if the lot is divided by a zoning boundary, specific regulations regarding density and floor area apply to the portion of the lot within each district [Section 18.15.040].

Sections Cited

  • Section 18.10.020: Purpose
  • Section 18.15.040: Lots divided by district boundaries
  • Section 18.25.020: General requirements for development and land use
  • Section 18.30.010: Purpose
  • Section 18.30.030: Table 18.30.030 – RR and RS districts – Development standards

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