Planning · 6 min

How to check if your property qualifies for a garage ADU in San Diego

Most single-family properties in San Diego County qualify for a garage ADU under current California law, but a few variables affect what you can build. Here is how to check before calling a contractor.

What you'll learn

  • How to look up your property's zoning and lot size on the City of San Diego or county assessor website
  • What state law changed about ADU eligibility and which local restrictions no longer apply
  • How to confirm whether your property is in a High Fire Hazard Severity Zone (affects some conversions)
  • What to ask your local building department if online tools do not give you a clear answer

Step by step

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Safety note

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