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Permits

California ADU Permit Process (2026): Steps, Timelines & Checklist

September 5, 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 7 Comments

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Recent Comments

  1. Los Angeles Garage Conversion ADU Cost (2026) on California ADU Permit Process (2026): Steps, Timelines & Checklist
  2. Los Angeles Garage Conversion ADU Cost: What the Existing Garage Saves—and What It Doesn't (2026) - ADU Project Planner on How to Compare ADU Contractor Bids: What Every Quote Should Include
  3. California Garage Conversion ADU Cost: 2026 Budget Guide on Los Angeles Garage Conversion ADU Cost: What the Existing Garage Saves—and What It Doesn’t (2026)
  4. Los Angeles Garage Conversion ADU Cost: What the Existing Garage Saves—and What It Doesn't (2026) - ADU Project Planner on California Garage Conversion ADU Cost: What to Budget for in 2026
  5. Are Pre-Approved ADU Plans Really Free in California? What You Still Pay For (2026) - ADU Project Planner on California ADU Permit Process (2026): Steps, Timelines & Checklist

Archives

  • September 2026
  • August 2026

Categories

  • ADU Planning
  • Construction
  • Costs & Financing
  • Design & Types
  • Rules & Permits

Recent Posts

  • Los Angeles Garage Conversion ADU Cost: What the Existing Garage Saves—and What It Doesn’t (2026)
  • Are Pre-Approved ADU Plans Really Free in California? What You Still Pay For (2026)
  • California ADU PG&E Meter Requirements & Utility Connection Costs (2026)
  • How to Compare ADU Contractor Bids: What Every Quote Should Include
  • ADU Construction Process: What Happens After Your Permit Is Approved?

Recent Comments

  • Los Angeles Garage Conversion ADU Cost (2026) on California ADU Permit Process (2026): Steps, Timelines & Checklist
  • Los Angeles Garage Conversion ADU Cost: What the Existing Garage Saves—and What It Doesn't (2026) - ADU Project Planner on How to Compare ADU Contractor Bids: What Every Quote Should Include
  • California Garage Conversion ADU Cost: 2026 Budget Guide on Los Angeles Garage Conversion ADU Cost: What the Existing Garage Saves—and What It Doesn’t (2026)
  • Los Angeles Garage Conversion ADU Cost: What the Existing Garage Saves—and What It Doesn't (2026) - ADU Project Planner on California Garage Conversion ADU Cost: What to Budget for in 2026
  • Are Pre-Approved ADU Plans Really Free in California? What You Still Pay For (2026) - ADU Project Planner on California ADU Permit Process (2026): Steps, Timelines & Checklist

Archives

  • September 2026
  • August 2026

Categories

  • ADU Planning
  • Construction
  • Costs & Financing
  • Design & Types
  • Rules & Permits

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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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