Santa Ana, California Zoning & Land Use Guide
Key Zoning Facts
Santa Ana Zoning Overview
Santa Ana is the county seat of Orange County and one of the most densely populated cities in California. The city's zoning and land use regulations are administered by the Planning and Building Agency under the Santa Ana Municipal Code.
Residential Zoning
Santa Ana's residential zoning districts follow a straightforward R1/R2/R3 classification system. The R1 zone is reserved for single-family detached homes, R2 allows duplexes, and R3 permits multi-family developments including apartments and condominiums.
ADU Development
Santa Ana supports ADU construction in compliance with California's statewide ADU laws. Property owners in residential zones can build detached ADUs up to 1,200 square feet with a streamlined 60-day ministerial permit process. The city has worked to reduce barriers to ADU construction as part of its housing production strategy.
Transit-Oriented Development
Santa Ana's Transit Zoning Code applies form-based standards near the Regional Transportation Center and other transit corridors. These areas encourage higher-density, mixed-use development and provide an alternative regulatory framework to traditional Euclidean zoning.
Regulatory Layers That Apply in Santa Ana
Your property is subject to ALL of these regulatory layers. Each one can impose additional requirements beyond the others.
Federal
- FEMA Flood Zones: Applicable
- View FEMA Flood Map
State — California
- Building Code: 2022 California Building Code (Title 24, based on 2021 IBC)
- Energy Code: 2022 California Energy Code (Title 24, Part 6)
- Seismic Zone: Zone 4 (high seismicity)
- State ADU Override: Yes (AB 68, SB 13, AB 881, AB 2221)
County — Orange County
- Role: Regional planning coordination and unincorporated area regulation
City / Municipal
The city's zoning ordinance, building codes, and local permits form the primary layer of land-use regulation for your property.
Overlay Districts
- Historic District Overlay — Areas within designated historic districts are subject to additional design review to preserve architectural character.
- Transit Zoning Code (TZC) — Areas near transit stations with form-based zoning standards encouraging mixed-use, walkable development.
Private Restrictions
- HOA / CC&Rs common: Yes
- Some Santa Ana neighborhoods have CC&Rs that may restrict ADU construction or impose additional design standards. Verify private covenants before building.
Primary Zoning Districts
- Min Lot
- 6,000 sq ft
- Max Height
- 28 ft / 2 stories
- Front Setback
- 20 ft
- Side Setback
- 5 ft
- Rear Setback
- 20 ft
- Min Lot
- 6,000 sq ft
- Max Height
- 28 ft / 2 stories
- Front Setback
- 20 ft
- Side Setback
- 5 ft
- Rear Setback
- 15 ft
- Min Lot
- 6,000 sq ft
- Max Height
- 35 ft / 3 stories
- Front Setback
- 15 ft
- Side Setback
- 5 ft
- Rear Setback
- 15 ft
- FAR
- 1.5
ADU Rules in Santa Ana
- Max Size
- 1,200 sq ft
- Max Height
- 16 ft
- Rear Setback
- 4 ft
- Side Setback
- 4 ft
- Parking
- No additional parking required within 0.5 miles of public transit
- Owner Occupancy
- Not required per state law
- Permit Timeline
- 60 days for ministerial approval
Permit Costs & Timelines
Permit Costs & Timelines
Specific permit fee schedules for Santa Ana are available from the local planning department. Fees vary based on project type, scope, and valuation.
Check Santa Ana permit fees →