ADU permit guide for Irvine, California
Orange County, CaliforniaReviewed August 28, 2026
Use this page for early ADU permit planning in Irvine. A verified local process guide is not available yet, so confirm every step and fee with the city before you submit.
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Permit fee planning by size
GetYourPermit research · 4 published reference lines
| ADU size | Researched range |
|---|---|
| 600 sq ft | $4,678 – $7,668 |
| 800 sq ftimpact-fee band | $8,884 – $14,173 |
| 1,000 sq ft | $10,881 – $17,586 |
| 1,200 sq ft | $13,078 – $21,115 |
Getting the permit
We have not written Irvine’s permit guide yet. The official sources below are the right place to start.
View official permit starting points