Setback Rules: Castro Valley vs San Leandro
How do setback rules rules compare between Castro Valley, CA and San Leandro, CA?
Castro Valley and San Leandro have similar restriction levels.
Castro Valley, CA
Alameda County
Unincorporated Alameda County sets minimum front, side, and rear yard setbacks by zoning district under Title 17. Cities like Oakland, Fremont, Berkeley, Hayward, and Livermore adopt their own standards.
View full Castro Valley rules →San Leandro, CA
Alameda County
San Leandro residential setbacks: 20 ft front, 5 ft side, 15 ft rear in RS zones. ADU setbacks reduced to 4 ft per Gov Code 65852.2.
View full San Leandro rules →Key Facts Comparison
| Fact | Castro Valley | San Leandro |
|---|---|---|
| Governing code | Alameda County Code Title 17 | - |
| R-1 front setback | Typically 20 feet | - |
| R-1 side setback | Typically 5 feet minimum | - |
| ADU setbacks | 4 feet (state preemption) | - |
| Variance authority | Board of Zoning Adjustments | - |
| RS front | - | 20 ft |
| RS side | - | 5 ft |
| RS rear | - | 15 ft |
| ADU setback | - | 4 ft - Gov Code 65852.2 |
| Corner side | - | 10 ft typical |
Highlighted rows indicate differences between cities.
Castro Valley FAQ
Do cities in Alameda County follow the same setbacks?
No. Incorporated cities like Oakland, Fremont, and Berkeley have their own zoning codes. Only unincorporated areas (Castro Valley, San Lorenzo, etc.) use Alameda County Title 17.
Can I build an ADU closer than zoning allows?
Yes. California Gov Code 65852.2 preempts local setbacks to 4 feet side and rear for ADUs regardless of the base zoning requirement.
San Leandro FAQ
Can my shed sit on the property line?
No. Most sheds still need 3-5 ft side/rear setback unless they qualify as ADU/JADU.
Can I get a variance?
Yes, through Planning, but requires findings of hardship.
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