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Permits

California ADU Permit Process: Step-by-Step Guide for 2026

September 4, 2026August 29, 2026 by Gijo John
Infographic showing the 2026 California ADU permit process, including the 15-business-day completeness review, 60-day ministerial review, appeal process and certificate of occupancy

How does the California ADU permit process work in 2026? Follow the steps from property checks and plan preparation through the 15-business-day completeness review, 60-day ministerial decision, corrections, inspections and final occupancy.

Categories Rules & Permits Tags California, Permits 5 Comments

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  1. Compare ADU Contractor Bids in California: Scope Checklist on ADU Construction Process: What Happens After Your Permit Is Approved?
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  5. How to Finance an ADU in California (2026 Guide) on How to Compare ADU Contractor Bids: What Every Quote Should Include

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Categories

  • ADU Planning
  • Construction
  • Costs & Financing
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Recent Posts

  • How to Compare ADU Contractor Bids: What Every Quote Should Include
  • ADU Construction Process: What Happens After Your Permit Is Approved?
  • How to Finance an ADU in California (2026): Loans, Equity, Rental Income and Grants
  • JADU vs. ADU in California: 2026 Rules, Owner-Occupancy, Costs, and Which to Build
  • How to Find a Good ADU Contractor in California: 15 Questions to Ask Before You Sign

Recent Comments

  • Compare ADU Contractor Bids in California: Scope Checklist on ADU Construction Process: What Happens After Your Permit Is Approved?
  • California Garage Conversion ADU Cost: 2026 Budget Guide on How to Compare ADU Contractor Bids: What Every Quote Should Include
  • California Garage Conversion ADU Cost: 2026 Budget Guide on How to Finance an ADU in California (2026): Loans, Equity, Rental Income and Grants
  • How Much Does an ADU Increase Property Value in California? on How to Finance an ADU in California (2026): Loans, Equity, Rental Income and Grants
  • How to Finance an ADU in California (2026 Guide) on How to Compare ADU Contractor Bids: What Every Quote Should Include

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  • August 2026

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  • Costs & Financing
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We are independent researchers, not licensed structural engineers, architects, or general contractors. Always verify local zoning with your city planning office before breaking ground. For unincorporated properties, confirm requirements with the responsible county agency.

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