Backyard project permits in San Diego, CA
San Diego measures its 120 sq ft shed limit by roof area and allows 7 ft fences without a permit, but not over 6 ft in the front setback.
Rules last checked by a person on October 19, 2026. Guidance only; confirm with San Diego before you build.
| Typical project | Permit? |
|---|---|
| Shed10 by 12 ft shed, 10 ft tall, no power | Yes: Building permit |
| Deck160 sq ft freestanding deck, 24 in high | No: no permit as described |
| Fence6 ft wood fence in the back yard | Probably not: no permit as described |
| Garage24 by 20 ft detached garage with lights | Yes: Building permit, Electrical permitConfidence: low |
| ADU650 sq ft detached backyard cottage | Yes: Building permit, Ministerial ADU approvalConfidence: medium |
Check your exact lot
Permit office
San Diego Municipal Code Chapter 12 (Section 129.0203 exemptions) and Land Development Code; State ADU Law.
- San Diego Development Services
- Phone: (619) 446-5000