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

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing law
Cal. Gov. Code §§ 65915-65918
Applies to
unincorporated area only
County mechanism
reduced minimum lot size/area
Ordinance
Zoning Ordinance § 4.20.030

Summary

Unincorporated Santa Clara County processes density bonus requests under state law, reducing minimum lot size or lot-area-per-unit standards for affordable multi-family housing developments that qualify under California's density bonus statute.

City-specific rules exist: San Jose, Sunnyvale, Santa Clara, and Mountain View have their own density bonus law rules that differ from Santa Clara County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

Applicants for housing development proposals may be eligible for a density bonus or other incentives to produce and maintain housing affordable to low and very low income households pursuant to the provisions and requirements of California Government Code Sections 65915 through 65918. Other incentives, such as reductions in standards, parking requirements, mixed use development, or other concessions which effectively reduce the cost of housing units targeted for low and very low income housing may also be provided. For purposes of implementing this provision of the zoning ordinance as part of a subdivision or other housing development proposal, specific instructions and procedures are contained within the pertinent sections of Government Code Sections 65915 through 65918, as amended.B.Calculations. The number of additional lots or dwelling units permitted by means of a density bonus allocation shall be achieved by making the appropriate and commensurate reduction in the applicable standards or regulations establishing minimum lot size or minimum lot area per dwelling unit for multi-family zoning districts. (Ord. No. NS-1200.344, § 1, 6-10-14)

Source: California Government Code 65915View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 65).

Full Breakdown

The county's zoning ordinance implements the state Density Bonus Law (Gov. Code §§ 65915-65918) rather than creating its own program: applicants proposing affordable housing for low- and very-low-income households may receive additional units and other incentives such as reduced parking or mixed-use flexibility. The county's own mechanism is the calculation method, the bonus is delivered by reducing the applicable minimum lot size or minimum lot area per dwelling unit for multi-family zoning districts. This applies only in the unincorporated area; San Jose, Palo Alto, and the other 13 cities each run their own density bonus procedures under their own codes.

Violations & Fines

Density bonus units approved without recorded affordability covenants, or built beyond the state-calculated bonus allowance, can be denied final occupancy, required to convert to market-rate units, or subject to permit revocation under Gov. Code § 65915 and County enforcement.

Frequently Asked Questions

Does Santa Clara County run its own density bonus program?
No: it processes state density bonus law (Gov. Code §§ 65915-65918) locally, reducing minimum lot size or area-per-unit standards for qualifying affordable housing in the unincorporated area.
Does this apply inside San Jose or Palo Alto?
No. Each of the 15 cities administers density bonus applications under its own code; § 4.20.030 covers only unincorporated Santa Clara County.

Sources & Official References

Other rules in Santa Clara County

All Santa Clara County rules

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

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Density Bonus Law in Cities Across Santa Clara County