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Stanislaus County, CA Zoning Overlays & Bonuses: Density Bonus Law (2026)

Few Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Base density bonus
20% for 5% very low or 10% low income units
Maximum bonus
Up to 80% for 100% affordable projects
Rental affordability term
55 years minimum
Moderate-income bonus
5% for 10% moderate-income condo units
Governing law
Cal. Gov't Code § 65915, County Code Ch. 21.82

Summary

Stanislaus County grants a 20 percent density bonus over the maximum allowed residential density to any housing development that sets aside at least 5 percent of its units for very low income households or 10 percent for low income households, under County Code § 21.82.020(C)(1), implementing California Government Code § 65915.

City-specific rules exist: Modesto has its own density bonus law rules that differ from Stanislaus County's county-level regulations. If you live in Modesto, check the city-specific page instead.

The intent of the density bonus program is to contribute significantly to the economic feasibility of affordable housing in proposed developments by offering incentives to developers consisting of density bonuses or other concessions of equal financial value, in compliance with California Government Code Sections 65915 through 65918... Very Low and Low Income Housing and Housing for Special Populations. Upon written request to the county, an applicant for a housing development is eligible for one density bonus of twenty percent over the maximum residential density provided that the applicant agrees to construct the housing development in accordance with one of the following criteria: a. Very Low Income Households. At least five percent of the total dwelling units, excluding any units permitted by the density bonus, are provided at affordable rent or ownership costs to very low income households; or b. Low Income Households. At least ten percent of the total dwelling units, excluding any units permitted by the density bonus, are provided at affordable rent or ownership costs to low income households.

Full Breakdown

82 adopts the state Government Code § 65915 density bonus program into county code for the unincorporated area. 020). 020(C)(1)). 020(C)(2)). 020(C)(3)). 040). 030).

Violations & Fines

A developer who fails to record and honor the affordability covenant after receiving bonus density units, or who converts restricted units to market rate before the 55-year rental affordability term or the required for-sale equity-sharing period expires, is in breach of the density bonus agreement and can be pursued by the county for enforcement of the recorded restrictions under § 21.82.030.

Frequently Asked Questions

How much of a density bonus can a Stanislaus County affordable project get?
The base bonus is 20 percent over the maximum residential density when at least 5 percent of units serve very low income households or 10 percent serve low income households, per § 21.82.020(C)(1). Projects that reserve 100 percent of bonus units for very low or low income households can reach up to an 80 percent bonus, with no density cap near a major transit stop.
How long must density-bonus rental units stay affordable in Stanislaus County?
At least 55 years, or longer if required by the construction or mortgage financing program involved, under § 21.82.030(A). For-sale units must keep their initial buyers within the qualifying income band and follow the equity-sharing terms required by Government Code § 65915.
Can I get extra concessions beyond the density bonus itself?
Yes. Section 21.82.040 grants one development-standard concession for the lowest qualifying affordability tier, up to three concessions for the highest tier, plus additional density or concessions for land donated to the county and for including an on-site child care facility.

Sources & Official References

Other rules in Stanislaus County

All Stanislaus County rules

California rules heatmap·Compare Stanislaus County to another location·View the California zoning overlays & bonuses overview

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