Shed Rules: El Cerrito vs Walnut Creek
How do shed rules rules compare between El Cerrito, CA and Walnut Creek, CA?
El Cerrito and Walnut Creek have similar restriction levels.
El Cerrito, CA
Contra Costa County
In unincorporated Contra Costa, a detached one-story accessory building used as a tool/storage shed of 120 sq ft or less does not require a building permit. Zoning setbacks still apply—typically 3 feet from side/rear property lines in R-zones—and any shed with electrical or plumbing needs a permit.
View full El Cerrito rules →Walnut Creek, CA
Contra Costa County
In Walnut Creek, detached storage sheds under 120 square feet and 12 feet tall are exempt from building permits under the California Building Code, but must still meet zoning setback requirements — typically 3 feet from side and rear property lines and behind the front building setback. Sheds over 120 sq ft require a building permit.
View full Walnut Creek rules →Key Facts Comparison
| Fact | El Cerrito | Walnut Creek |
|---|---|---|
| Permit-exempt size | 120 sq ft and under 12 ft tall | - |
| Side/rear setback | 3 ft typical residential | - |
| Electrical/plumbing | Triggers permit regardless of size | - |
| Lot coverage | Counts toward 35-40% cap | - |
| WUI rule | Ignition-resistant materials recommended | - |
| - | - |
Highlighted rows indicate differences between cities.
El Cerrito FAQ
Do I need a permit for a 100 sq ft shed with an outlet?
Yes. Any shed with electrical service, regardless of size, needs an electrical permit, and the overall structure must be inspected.
Can I place a shed on the property line?
No. Even permit-exempt sheds must meet the zoning setback—typically at least 3 feet from the side and rear property lines.
Walnut Creek FAQ
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