Summary
- Location
- Orange County, California, USA
- County-level 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 context
Orange County Pre-Approved ADU Plans
Browse official city and county pre-approved ADU plan programs in Orange County, California.
Program Overview
This Orange County page summarizes source-backed county context for Orange County, California. The current export lists 2 city program pages in this county and 6 county-level accepted-plan records. County-level plan sources include Orange County Public Works / OC Development Services. Provider names include Design Path Studio.
County records may apply only in unincorporated areas or county-administered jurisdictions, so verify the official source before relying on a plan for an incorporated city. County fee and permit data includes 2 fee records and 3 permit requirement records. Missing source fields remain Not listed in source, and directory records do not guarantee permit approval.
Included Locations
City
Garden Grove, Orange County, California, USA
4 accepted plans
City
Santa Ana, Orange County, California, USA
10 accepted plans
County-Level Accepted Plans
6 plans Source-backed record Official county source
- 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.
Source-backed record Official county source
- 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.
Source-backed record Official county source
- 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.
Source-backed record Official county source
- 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.
Source-backed record Official county source
- 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.
Source-backed record Official county source
- 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.
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