Rialto, California Zoning Map
Zoning, overlays and hazards on every parcel — and an answer to what the code actually lets you build. Compiled from current zoning data for all 29 districts.
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What's in the Rialto dataset
Every field below is available for any Rialto parcel, on the map and through the AI.
Zoning
- District code & full name
- Category & ordinance article
- Parcel boundary & APN
- All 29 districts mapped
Use classes, resolved
- Read per zoning district
Building controls
- Maximum building height
- Floor area ratio (FAR)
- Front setback
- Side setback
Overlays, hazards & AI
- Flood hazard & environmental layers
- Ask the AI about any parcel
- Powered by live parcel data
Where uses are permitted in Rialto
Share of Rialto's zoned land where each use is permitted.
- Single-family
- 38.06%
- Multi-family
- 2.76%
- ADU
- 35.16%
- Two-family
- 35.16%
- Retail
- 7.93%
- Eating & drinking
- 6.98%
- Office
- 2.34%
- Hotel / motel
- 0.20%
- Industrial
- 5.80%
- Storage & warehouses
- 7.58%
Rialto, California Zoning Districts: What Do They Mean?
Zoning districts are areas regulated by specific laws that determine land use, building types, and development rules. Each district below shows its zone type and which uses it permits.
| Zone Code | Category | Permitted Uses | Area | Details |
|---|---|---|---|---|
A-1 Agricultural | Agriculture | - | 78.7 ac | Standards & uses → |
AM-SP Agua Mansa Specific Plan | Special | - | 1,349.8 ac | Standards & uses → |
A-P Administrative Professional | Commercial |
| 44.8 ac | Standards & uses → |
C-1 Neighborhood Commercial | Commercial |
| 77.5 ac | Standards & uses → |
Showing 4 of 29 districts
Start from what you're trying to build
Each one runs against the live Rialto dataset and returns the districts, standards and approvals involved.
Where can I build multifamily in Rialto?
2 of 29 districts permit multifamily - by right, conditionally, or by variance.
Run it →Which sites allow a warehouse?
2 industrial districts (M-1, M-2) with height and access limits.
Run it →Are ADUs allowed in Rialto?
Allowed statewide under California law, subject to local development standards.
Run it →What does A-1 actually permit?
The full standards for one district, read straight from the source.
Run it →What should developers know about Rialto zoning?
Rialto in San Bernardino County is one of the Inland Empire's more complex zoning markets, with 29 districts including a large number of Specific Plans that have reshaped significant portions of the city's land. The Rialto Airport Specific Plan (RA-SP) covers 1,551.64 acres and the Lytle Creek Ranch Specific Plan (LCR-SP) adds 2,024 acres - together accounting for more than 3,500 acres of plan-governed land. The Renaissance Specific Plan (R-SP) at 1,173.02 acres and the Gateway Specific Plan (GW-SP) at 299.5 acres reflect the city's long-standing strategy of using specific plans to guide large-scale mixed-use and residential growth.
On the base-zoning side, single-family residential dominates through R-1C (1,938.15 acres), R-1B (1,134.67 acres), and R-1A (1,010.82 acres), with multifamily residential concentrated in R-3 (313.32 acres) and a smaller R-4 (29.87 acres). The industrial land base is led by M-1 Light Industrial (441.63 acres) and M-2 General Manufacturing (290.23 acres), consistent with Rialto's role as a logistics and warehousing hub in the western Inland Empire. The Agua Mansa Specific Plan (AM-SP) at 1,349.76 acres covers the industrial corridor near the Santa Ana River.
Developers and investors should treat the Specific Plan areas as distinct regulatory environments - each SP has its own design standards, use matrix, and entitlement process separate from the base zoning code. Building controls are comprehensive across all districts, covering FAR, height, density, coverage, setbacks, and lot width. This is pre-development intelligence, not legal advice - verify with the local planning department before acquisition.
Rialto zoning: frequently asked questions
What are the major Specific Plan areas in Rialto and how do they affect development?
Rialto has at least eight active Specific Plans, with the largest being Lytle Creek Ranch SP (2,024 acres), Rialto Airport SP (1,551.64 acres), Renaissance SP (1,173.02 acres), and Agua Mansa SP (1,349.76 acres). Each SP supersedes base zoning with its own permitted uses, development standards, and internal circulation requirements. Developers acquiring land within any SP boundary must review the specific plan document directly rather than relying on standard zoning codes.
How strong is Rialto's industrial land base for logistics and warehousing?
Rialto has approximately 731 acres of base industrial zoning (M-1 Light Industrial at 441.63 acres plus M-2 General Manufacturing at 290.23 acres), and the Agua Mansa Specific Plan adds another 1,349.76 acres of plan-governed industrial land near the Santa Ana River. This makes Rialto a legitimate target for large-footprint logistics, distribution, and cold-storage development. Proximity to the I-10 and I-210 freeways reinforces the city's position in the Inland Empire industrial market.
What multifamily residential zones exist in Rialto outside the Specific Plans?
Outside the SP areas, multifamily development is confined primarily to R-3 Multifamily Residential (313.32 acres) and R-4 Multifamily Residential (29.87 acres), plus two Planned Residential Development zones (PRD-A Attached at 17.86 acres and PRD-D Detached at 105.89 acres). Several of the larger Specific Plans also include residential components. ADUs are permitted citywide on eligible residential parcels under California state law.
What is the Foothill Boulevard Specific Plan and what uses does it target?
The Foothill Boulevard Specific Plan (FB-SP) covers 261.55 acres along one of the city's primary commercial corridors. Foothill Boulevard historically served as Route 66 and runs through a mix of strip commercial and residential uses. SP standards along this corridor typically emphasize mixed-use, walkable storefront commercial, and infill residential, though the precise use matrix requires direct review of the FB-SP document.
Are there agricultural or rural zones in Rialto that could be repositioned for development?
The A-1 Agricultural zone covers 78.65 acres of base-zoned agricultural land within city limits. In the Inland Empire context, agriculturally-zoned parcels on the urban fringe are often candidates for rezoning to residential or industrial uses as the market absorbs surrounding land. Investors should verify whether A-1 parcels lie within a Specific Plan area or are subject to a development agreement before pricing in any entitlement upside.
California zoning maps
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Zoning data is pre-development intelligence, not legal advice. Verify with the Rialto planning department before acquisition or design.