Costa Mesa, CA Zoning Overlays & Bonuses: Density Bonus Law (2026)
Key Facts
- Governing sections
- Costa Mesa Municipal Code §§ 13-152–13-154
- Minimum project size
- 5 housing units
- State law basis
- Gov. Code § 65915 et seq.
- Preliminary application
- 30-day city response required
- Financial-incentive requests
- City council has final approval
Summary
Costa Mesa implements California's density bonus law through sections 13-152 through 13-154, letting developers of affordable, senior, or child-care housing projects request extra units and incentives. A qualifying project needs at least five units and must provide income-restricted housing, donated land, or a child care facility under State Government Code section 65915.
The purpose of this article is to provide incentives for the production of affordable housing, senior housing, and child care facilities in compliance with State Government Code section 65915 et. seq. regarding density bonuses and other incentives. ... To qualify for a density bonus and concessions or other incentives, the developer of a proposed housing project of at least five units, must provide housing units affordable to certain income households, donate land, and/or construct a child care facility pursuant to State Government Code section 65915 et seq.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4894290; v9 updated 2025-11-18).
Full Breakdown
Article 4 of Chapter IX, sections 13-152 through 13-154, is Costa Mesa's local implementation of state density bonus law. seq. to qualify for a bonus and any concessions or incentives. Section 13-154 lays out a two-step local process. A developer may first file a preliminary application, after which the planning division has 30 days to hand back the applicable procedures, a copy of the article, the relevant state code sections, and a formal application. The formal submittal must include a legal description of the site with current ownership and zoning, an owner's letter describing how the project will comply with Government Code section 65915 and what specific density bonus or incentive is being requested, a pro forma justifying the requested concession and establishing the land value per bonus unit, a management plan for tracking income and rent or sale-price qualification, and a full site plan package.
The planning division reviews the application as a planning application under Chapter III and reports to the planning commission; if the request involves direct financial incentives from the city, the planning commission's action is advisory only and the city council makes the final call.
Violations & Fines
A developer who builds bonus units without an approved section 13-154 application, or who fails to maintain the income-qualification and rent or sale-price documentation required in the submitted management plan, is out of compliance with the article and risks the city revisiting the approved incentives. Projects claiming direct financial incentives cannot proceed on planning commission action alone; only city council approval is final under section 13-154(c).
Frequently Asked Questions
How many units does a Costa Mesa project need to qualify for a density bonus?
What does a Costa Mesa density bonus application require?
Who decides a Costa Mesa density bonus request involving city financial incentives?
Sources & Official References
Other rules in Costa Mesa
California rules heatmap·Compare Costa Mesa to another location·View the California zoning overlays & bonuses overview
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Density Bonus Law in Nearby Cities
How other cities in Orange County handle density bonus law.