Ontario, 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 87 districts.
Prefer to browse? Open the full Ontario map ↗
What's in the Ontario dataset
Every field below is available for any Ontario parcel, on the map and through the AI.
Zoning
- District code & full name
- Category & ordinance article
- Parcel boundary & APN
- All 87 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 Ontario
Share of Ontario's zoned land where each use is permitted.
- Single-family
- 37.58%
- Multi-family
- 5.43%
- ADU
- 37.28%
- Retail
- 37.34%
- Eating & drinking
- 50.30%
- Office
- 23.42%
- Hotel / motel
- 6.47%
- Industrial
- 17.99%
- Storage & warehouses
- 36.26%
Ontario, 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 |
|---|---|---|---|---|
ABC-SP Archibald Business Center Specific Plan | Special | - | 32.8 ac | Standards & uses → |
ACCO-SP Airport Center Specific Plan | Special | - | 59.6 ac | Standards & uses → |
AC-SP Archibald Center Specific Plan | Special | - | 33.2 ac | Standards & uses → |
AG Agricultural | Agriculture | - | 3,640.6 ac | Standards & uses → |
Showing 4 of 87 districts
Start from what you're trying to build
Each one runs against the live Ontario dataset and returns the districts, standards and approvals involved.
Where can I build multifamily in Ontario?
4 of 87 districts permit multifamily - by right, conditionally, or by variance.
Run it →Are ADUs allowed in Ontario?
Allowed statewide under California law, subject to local development standards.
Run it →What does ABC-SP actually permit?
The full standards for one district, read straight from the source.
Run it →What should developers know about Ontario zoning?
Ontario is one of the Inland Empire's premier logistics and industrial markets, and its zoning code confirms that position. The Agricultural zone at 3,641 acres is the largest single designation but is largely comprised of land in transition - much of it targeted for planned development through the city's extensive specific plan network. The California Commerce Center Specific Plans (CCC-SP at 1,413 acres and CCCS-SP at 511 acres) are two of the largest individual districts in the city, representing massive logistics and industrial master-planned developments near Ontario International Airport. A Civic (CIV) zone at 603 acres reflects substantial public institutional uses.
With 87 districts - including more than 25 named specific plans - Ontario has pursued a place-specific development strategy across its more than 36 square miles. The result is a zoning landscape where individual specific plans like Airport Center, Creekside, Edenglen, Euclid Mixed Use, and Grand Park each set tailored development envelopes for distinct nodes. Convention Center Support Commercial (CCS at 231 acres) signals the city's hospitality and events economy anchored by the Ontario Convention Center. Residential specific plans (Corsaire, Countryside, Esperanza) guide suburban infill. Building controls are comprehensive across all categories including FAR, multi-family, density, coverage, and full setbacks. This is pre-development intelligence, not legal advice - verify with the local planning department before acquisition.
Ontario zoning: frequently asked questions
How does Ontario's proximity to its international airport shape industrial zoning?
Ontario International Airport is a primary driver of the city's industrial and logistics economy, and the Airport Center Specific Plan (ACCO-SP at 60 acres) and California Commerce Center Specific Plans (CCC-SP and CCCS-SP together over 1,900 acres) are the clearest expressions of this relationship. These plans accommodate warehousing, distribution, cargo handling, and air-freight-adjacent commercial uses. For logistics developers and industrial investors, Ontario consistently ranks among the most competitive inland California markets for large-format warehouse and distribution facilities.
What residential development pathways exist within Ontario's specific plan framework?
Ontario's residential growth is largely channeled through specific plans: Corsaire, Countryside, Esperanza, Edenglen, Grand Park, and others each define residential communities with their own lot sizes, density ranges, and amenity standards. Rather than a single city-wide residential code, each specific plan is its own development rulebook. Buyers evaluating residential parcels in Ontario must identify which specific plan applies and review that document for the permitted density, product type, and remaining build-out capacity.
Is there land in Ontario suitable for mixed-use or urban infill?
The Euclid Mixed Use Specific Plan (EMU-SP at 90 acres) and the Grove Avenue Specific Plan (GA-SP at 246 acres) represent Ontario's primary mixed-use and urban infill corridors. The Business Park (BP at 117 acres) and various named business center specific plans (Archibald Business Center, Archibald Center, Centrelake Business Park) cater to office and R&D users. For projects combining residential, retail, and office, the mixed-use specific plan areas provide the clearest entitlement framework.
What is the Convention Center Support Commercial zone?
The CCS zone (231 acres) surrounds the Ontario Convention Center and accommodates hotels, restaurants, event venues, and ancillary retail serving the conventions and trade shows hosted there. This zone is one of the more active hospitality development corridors in the eastern Inland Empire, particularly for full-service hotel product oriented toward corporate and group travel. Investors should note that CCS-zoned parcels may carry specific design standards tied to the Convention Center's pedestrian network and civic presence.
How does California's housing mandate affect Ontario given its large agricultural land base?
Ontario's 3,641-acre Agricultural zone represents a significant land reservoir, and the city's Housing Element must identify adequate sites to meet RHNA allocation targets. Some agricultural parcels near existing infrastructure may be candidate rezoning sites for residential or mixed-use development. However, the pace of agricultural-to-residential conversion is governed by the General Plan update cycle and market conditions, and parcels under Williamson Act contracts require formal non-renewal before development can proceed.
California zoning maps
Analyze any Ontario parcel in 60 seconds
Zoning, overlays, hazards, and what the code actually allows - in one place.
Zoning data is pre-development intelligence, not legal advice. Verify with the Ontario planning department before acquisition or design.