Rialto, CA Zoning Overlays & Bonuses: Density Bonus Law (2026)
Key Facts
- Governing chapter
- RMC Ch. 18.101
- Minimum project size
- 5+ dwelling units
- Base affordability trigger
- 10% lower income units
- Affordability covenant term
- 55 years minimum
- Maximum tiered incentives
- Up to 4, plus height bonus near transit
Summary
Rialto must grant a density bonus and development incentives to any housing project of five or more units that sets aside a state-specified share of affordable, senior, veteran, foster-youth or homeless units, under RMC Chapter 18.101, which implements state density bonus law locally.
A.Application. Any person that desires a density bonus must make an application on a form approved by the director at the time of submitting an entitlement application for the housing development for which a density bonus is requested. The density bonus provided by this chapter only applies to housing developments consisting of five or more dwelling units.B.Incentives and Concessions. When an applicant seeks a density bonus for a housing development or for the donation of land for housing within the city, the city must provide the applicant incentives or concessions for the production of housing units and child care facilities as provided in this chapter.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 39).
Full Breakdown
020 sets Rialto's general density bonus provisions. An applicant must apply on a director-approved form when submitting the entitlement application, and the bonus only applies to housing developments of five or more units. 050, when a developer commits to at least: ten percent of units for lower income households, five percent for very low income households, ten percent in a common interest development for moderate income households, a senior citizen housing development, ten percent for transitional foster youth, ten percent for disabled veterans, ten percent for homeless persons, twenty percent of student housing units for lower income students, or one hundred percent lower/moderate income units.
Continued affordability must run fifty-five years, or longer if a financing program requires it, and the city requires an equity-sharing agreement for for-sale units. 040 sets tiered incentives: one for the ten/five/ten percent tier, two for twenty/ten/twenty percent, three for thirty/fifteen/thirty percent, and four incentives plus up to a three-story or thirty-three-foot height bonus for one-hundred-percent-affordable projects near a major transit stop. 040(C).
Violations & Fines
This is a benefit program, not a prohibition; the city has no discretion to deny a qualifying density bonus, incentive or concession absent one of the narrow written findings in Section 18.101.040(C) or 18.101.050(B), such as a specific adverse public-health, safety, or historic-resource impact with no feasible mitigation, or conflict with state or federal law.
Frequently Asked Questions
How many affordable units trigger a density bonus in Rialto?
How long must the affordable units stay affordable?
Can Rialto deny a density bonus incentive I qualify for?
Sources & Official References
Other rules in Rialto
California rules heatmap·Compare Rialto to another location·View the California zoning overlays & bonuses overview
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Density Bonus Law in Nearby Cities
How other cities in San Bernardino County handle density bonus law.