Zoning Overlays & Bonuses in Contra Costa County, CA (2026)

1 county-level rule, plus city-specific rules for 3 cities in Contra Costa County, California.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Contra Costa County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Density Bonus Law

Contra Costa County grants developers a density bonus above the zoned maximum for building affordable or senior housing under Ordinance Code Chapter 822-2. A project providing required inclusionary units can request up to a fifteen percent density bonus, while one that exceeds those minimums earns a larger bonus and incentives tied to Government Code Section 65915.

Contra Costa County Residential Density Bonus

Some Restrictions

Contra Costa County Ordinance Code §§ 822-2.402, 822-2.404 (Ords. 2007-28, 2004-45, 2001-06)

822-2.402 - Inclusionary unit density bonus. For any project where inclusionary units are required under Chapter 822-4, a developer may request a density bonus for providing the required inclusionary units. The developer may request a density bonus in an amount equal to or less than fifteen percent of the total units in the development, including the inclusionary units provided in the developme...

Full ordinance details →Official source ↗

Zoning Overlays & Bonuses by City in Contra Costa County

3 cities in Contra Costa County have their own zoning overlays & bonuses rules. Each link goes to that city's dedicated page with code citations.

AntiochPop. 115,291

2 verified rules • Density Bonus Law, Downtown Design Guide

San RamonPop. 84,070

1 verified rule • Density Bonus Law

BrentwoodPop. 68,153

2 verified rules • Density Bonus Law, Downtown Design Guide

All Contra Costa County ordinances

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