Summary
- Location
- Orange County, California, USA
- Accepted plans
- 6 accepted plans
- Providers
- 1 provider
- Origin programs
- 1 program
- Plan size range
- 393 to 1,200 sq ft
- Permit sources
- 3 sources
County
Orange County Pre-Approved ADU Plans
Browse official city and county pre-approved ADU plan programs in Orange County, California.
Included Locations
City
Santa Ana, Orange County, California, USA
10 accepted plans
Accepted Plans
6 plans- Provider
- Design Path Studio
- Origin program
- Orange County, California, USA
- Accepted location
- Orange County, California, USA
- Size
- 558 sq ft
- Bedrooms
- 1 bed
- Bathrooms
- 1 bath
- Last checked
- May 1, 2026
Verify current acceptance, site limits, and permit requirements with the local building department.
- Provider
- Design Path Studio
- Origin program
- Orange County, California, USA
- Accepted location
- Orange County, California, USA
- Size
- 393 sq ft
- Bedrooms
- Studio
- Bathrooms
- 1 bath
- Last checked
- May 1, 2026
Verify current acceptance, site limits, and permit requirements with the local building department.
- Provider
- Design Path Studio
- Origin program
- Orange County, California, USA
- Accepted location
- Orange County, California, USA
- Size
- 972 sq ft
- Bedrooms
- 3 beds
- Bathrooms
- 2 baths
- Last checked
- May 1, 2026
Verify current acceptance, site limits, and permit requirements with the local building department.
- Provider
- Design Path Studio
- Origin program
- Orange County, California, USA
- Accepted location
- Orange County, California, USA
- Size
- 1,200 sq ft
- Bedrooms
- 3 beds
- Bathrooms
- 2 baths
- Last checked
- May 1, 2026
Verify current acceptance, site limits, and permit requirements with the local building department.
- Provider
- Design Path Studio
- Origin program
- Orange County, California, USA
- Accepted location
- Orange County, California, USA
- Size
- 748 sq ft
- Bedrooms
- 2 beds
- Bathrooms
- 1 bath
- Last checked
- May 1, 2026
Verify current acceptance, site limits, and permit requirements with the local building department.
- Provider
- Design Path Studio
- Origin program
- Orange County, California, USA
- Accepted location
- Orange County, California, USA
- Size
- 800 sq ft
- Bedrooms
- 2 beds
- Bathrooms
- 2 baths
- Last checked
- May 1, 2026
Verify current acceptance, site limits, and permit requirements with the local building department.
No accepted plans listed
This location has no accepted plan records in the current data export.
Permit Requirements
3 requirementsDetached
County complete package
Selected pre-approved ADU plan with completed title sheet, site plan, solar plan, plan preparation checklist, hold harmless statement, WQP/NPP form, and C&D diversion compliance work plan.
- Last checked
- May 1, 2026
- Notes
- Not listed in source
Detached
County plan code cycle
Available plans currently reflect 2022 California Building Code Standards; County says updates to 2025 standards are in process.
- Last checked
- May 1, 2026
- Notes
- Not listed in source
Detached
County application portal
Applicants using county pre-approved plans must submit complete package through MyOCService for review and approval.
- Last checked
- May 1, 2026
- Notes
- Not listed in source
Fees
2 fee recordsDetached
County pre-approved plan download fee
County proposal says pre-approved ADU plans will be available to view and download from the County website at no cost.
- Last checked
- May 1, 2026
- Notes
- Not listed in source
Detached
County reduced plan check fee
County proposal anticipated a reduced plan check fee charging only 25% of the standard plan check fee for applicants using pre-approved plans.
- Last checked
- May 1, 2026
- Notes
- Not listed in source
Official Sources
3 sourcesPre-Approved Accessory Dwelling Unit (ADU) Plans | OC Development Services California
- Publisher
- Orange County Public Works / OC Development Services
- Last checked
- May 1, 2026
Accessory Dwelling Units (ADU) Flyer January 2026
- Publisher
- Orange County Public Works / OC Development Services
- Last checked
- May 1, 2026
Proposal: Accessory Dwelling Unit Pre-Approved Plans
- Publisher
- Orange County Public Works / OC Development Services
- Last checked
- May 1, 2026