ADU permit guide for Alameda, California
Alameda County, CaliforniaReviewed August 28, 2026
Use this page for early ADU permit planning in Alameda. 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 · 2 published reference lines
| ADU size | Researched range |
|---|---|
| 600 sq ft | $6,650 – $14,350 |
| 800 sq ftimpact-fee band | $8,150 – $17,500 |
| 1,000 sq ft | $9,750 – $20,850 |
| 1,200 sq ft | $11,200 – $24,000 |
Getting the permit
We have not written Alameda’s permit guide yet. The official sources below are the right place to start.
View official permit starting points