Santa Ana Site Plan Requirements | Permits & Zoning Guide

By Site Plan Creator Team •

Everything you need to know about creating a site plan for building permits in Santa Ana, CA. Covers zoning requirements, setbacks, stormwater management, and submission procedures.

Santa Ana Site Plan Requirements: Complete Guide for Building Permits

Creating a site plan for a building permit in Santa Ana, California requires meeting specific requirements set by the Planning and Building Agency (PBA). Santa Ana is the county seat of Orange County and is governed by the Santa Ana Municipal Code (Title 41 — Zoning). The city has significant historic districts, a growing downtown mixed-use area, and follows California's statewide ADU and housing legislation.

Required Site Plan Elements

  • Property boundaries with dimensions and total lot area
  • Setbacks per Title 41
  • Existing and proposed structures
  • Lot coverage calculation
  • Parking per Title 41
  • Landscaping per WELO
  • Stormwater per NPDES
  • North arrow and scale
  • Orange County APN

Santa Ana Zoning and Setback Requirements

  • R1 (Single-Family): Front 20 feet, side 5 feet, rear 20 feet. Lot coverage max 50%. Height max 28 feet.
  • R2 (Two-Family): Front 20 feet, side 5 feet, rear 20 feet. Lot coverage max 55%.
  • R3 (Multi-Family): Front 15 feet, side 5-10 feet, rear 15 feet.
  • SP (Specific Plan): Custom standards for designated planning areas including downtown.
  • Transit Zoning Code: Form-based standards along transit corridors with build-to lines and active ground floors.

Historic Preservation

  • Historic Resources Commission reviews projects in designated districts
  • Historic districts: Including French Park, Heninger Park, and Downtown Historic District
  • Certificate of Appropriateness required for exterior work in local districts
  • Mills Act: Property tax reduction contracts for historic properties

Transit Zoning Code

  • Form-based standards along OC Streetcar and major transit corridors
  • Build-to lines replacing traditional setbacks
  • Active ground floors required along transit frontage
  • Reduced parking near transit stations
  • Higher density allowed than traditional zones

ADU Requirements

  • Per California law: Detached up to 1,200 sq ft, 4-foot setbacks
  • Junior ADU up to 500 sq ft
  • Ministerial approval for compliant ADUs

Stormwater Management

  • Orange County NPDES: WQMP required for projects creating 10,000+ sq ft impervious surface
  • LID measures required
  • Santa Ana River watershed enhanced treatment

How to Submit

Submit through Santa Ana's online portal at santa-ana.org/permits. Walk-in at 20 Civic Center Plaza, M-27.

Fees and Timeline

  • Fees: Per PBA fee schedule; includes impact fees
  • Timeline: Residential 4-6 weeks. Commercial 6-12 weeks. Historic review adds 4-6 weeks.

Creating Your Santa Ana Site Plan with Site Plan Creator

Site Plan Creator makes it easy to generate a professional, permit-ready site plan for your Santa Ana property. Simply enter your address, and the tool automatically loads your property boundaries, building footprints, and aerial imagery. You can then add setback lines, label structures, draw proposed construction, and export a scaled PDF ready for PBA submission.

Seismic and Geological Considerations

  • Seismic Zone 4: Santa Ana is near several active faults including the Newport-Inglewood and Whittier faults
  • Liquefaction zones: Parts of Santa Ana are in mapped liquefaction zones requiring geotechnical investigation and potential foundation modifications
  • California Building Code: Seismic Design Category D applies with enhanced lateral force resistance and structural connection requirements
  • Soft-story retrofit: Older multi-family and commercial buildings with soft ground stories may require seismic retrofit per local ordinance

Affordable Housing and RHNA

  • Regional Housing Needs Allocation (RHNA): Santa Ana must plan for thousands of new housing units across income levels during the current housing element cycle
  • Density bonus: California's density bonus law (Government Code 65915) allows additional units and concessions for projects that include affordable units
  • SB 35 streamlining: Qualifying projects with affordable units may receive ministerial approval without discretionary review
  • Impact fee exemptions: Affordable housing projects may qualify for reduced or waived impact fees

Downtown Specific Plan

  • Downtown Santa Ana: The Downtown Specific Plan governs the historic Fourth Street corridor and surrounding blocks with form-based standards
  • Artists Village: Special designation promoting arts, culture, and mixed-use development in the downtown core
  • Adaptive reuse: Incentives for converting historic commercial buildings to residential or mixed-use
  • Reduced parking: Downtown parking requirements are lower than standard zones, with shared parking encouraged
  • Public art requirement: Larger projects in the downtown area may be required to include public art or contribute to a public art fund

Frequently Asked Questions

What are the typical residential setbacks?
R1 zones have 20-foot front, 5-foot side, 20-foot rear setbacks with 50% lot coverage and 28-foot height max. R2 allows 55% coverage. R3 multi-family has 15-foot front setbacks. Transit Zoning Code uses form-based build-to lines.
What is the Transit Zoning Code?
Form-based standards along OC Streetcar and transit corridors with build-to lines, active ground floors, reduced parking, and higher density. These replace traditional setback-based zoning.
What historic district requirements apply?
Historic Resources Commission reviews exterior work in French Park, Heninger Park, and Downtown Historic District. Certificate of Appropriateness required. Mills Act property tax reductions available.
Can I build an ADU?
Yes, per California law. Detached up to 1,200 sq ft, 4-foot setbacks. Junior ADU up to 500 sq ft. Ministerial approval.
What stormwater is required?
Orange County NPDES requires WQMP for 10,000+ sq ft impervious surface projects. LID measures required. Santa Ana River watershed enhanced treatment.
What Specific Plans exist?
Several Specific Plans govern designated areas with custom standards including the downtown area. Check with PBA for applicable plans in your area.
How do I submit?
Submit through santa-ana.org/permits. Walk-in at 20 Civic Center Plaza, M-27. Residential 4-6 weeks.
How long does review take?
Residential 4-6 weeks. Commercial 6-12 weeks. Historic review adds 4-6 weeks. Transit Zoning Code projects may have additional design review.

How to Create a Site Plan in Santa Ana

  1. Look Up Property: Use Orange County GIS to find zoning, Transit Zoning Code applicability, historic district, and lot dimensions. Note your APN.
  2. Determine Requirements: Check if Transit Zoning Code, Specific Plan, or standard zoning applies. Determine historic district status and stormwater requirements.
  3. Create Site Plan: Enter your Santa Ana address in Site Plan Creator to load property data. Add setback or build-to lines per applicable zone.
  4. Include Required Elements: Include boundaries, setbacks/build-to, lot coverage, parking, landscaping, stormwater, and north arrow with scale.
  5. Prepare Documents: Prepare WQMP for regulated projects. Historic Commission application if in a district. Transit Zoning Code design materials if applicable.
  6. Submit: Upload through santa-ana.org/permits. Pay fees.
  7. Obtain Permit: Respond to comments. Attend Historic Commission if required. Once approved, pay fees, receive permit, schedule inspections.