Santa Ana, California Zoning & Land Use Guide
Sources checked· 2026-05-24
Last updated: Verified:
Key Zoning Facts
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 mapping: check parcel-specific flood-zone status
- 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 municipality's zoning ordinance, building-code enforcement, and local permits form the primary local 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
- Private covenants, deed restrictions, condominium rules, or association rules can impose requirements beyond zoning.
- 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
R1Single-Family Residential
- Min Lot
- 6,000 sq ft
- Max Height
- 28 ft / 2 stories
- Front Setback
- 20 ft
- Side Setback
- 5 ft
- Rear Setback
- 20 ft
R2Two-Family Residential
- Min Lot
- 6,000 sq ft
- Max Height
- 28 ft / 2 stories
- Front Setback
- 20 ft
- Side Setback
- 5 ft
- Rear Setback
- 15 ft
R3Multi-Family Residential
- 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
ADUs:Allowed
- 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
Check Current Permit Fees & Timelines
Permit fees and review times can vary by project type, scope, valuation, and required approvals. Check the current schedule with the local permitting authority before filing.
Check current Santa Ana permit information →Official Sources
City-specific
Frequently Asked Questions
What residential zoning districts does Santa Ana have?
Santa Ana's primary residential zones are R1 (single-family), R2 (two-family/duplex), and R3 (multi-family). Each zone specifies minimum lot sizes, height limits, setbacks, and lot coverage maximums.
Can I build an ADU in Santa Ana?
Yes. ADUs are allowed on most residentially zoned lots in Santa Ana under California state law. Detached ADUs up to 1,200 sq ft are permitted with ministerial approval within 60 days.
Does Santa Ana have a transit-oriented zoning overlay?
Yes. The Transit Zoning Code (TZC) applies to areas near the Santa Ana Regional Transportation Center and encourages higher-density, mixed-use, walkable development with form-based standards.
Disclaimer: The information on this website is provided for general informational purposes only and does not constitute legal, financial, or professional advice. Zoning codes and building regulations change frequently. Always verify current requirements with your local planning department and building authority before making any decisions.