Setback Rules: Castro Valley vs Livermore
How do setback rules rules compare between Castro Valley, CA and Livermore, CA?
Castro Valley and Livermore 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 →Livermore, CA
Alameda County
Livermore zoning Title 21 sets typical residential setbacks at 20 ft front, 5 ft side, 15-20 ft rear; ADU setbacks reduced to 4 ft under state law.
View full Livermore rules →Key Facts Comparison
| Fact | Castro Valley | Livermore |
|---|---|---|
| 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 | - |
| Front (RL/RS) | - | 20 ft typical |
| Side Interior | - | 5 ft |
| Rear | - | 15-20 ft |
| ADU Setback | - | 4 ft state minimum |
| Code | - | LMC Title 21 |
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.
Livermore FAQ
Can I build closer to my property line for an ADU?
Yes — state law Gov Code §65852.2 allows 4-foot side and rear setbacks for ADUs regardless of local zoning.
Do eaves count toward the setback?
Eaves may encroach 2-3 feet into required setbacks depending on the feature; verify with Planning Division.
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