Signage Rules: Castro Valley vs San Leandro
How do signage 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
Alameda County prohibits most on-premises signage for home occupations in residential zones; the business must not advertise its presence with exterior signs, window displays, or lighted signs under Title 17.
View full Castro Valley rules →San Leandro, CA
Alameda County
San Leandro prohibits signage for home-based businesses. No exterior signs, window displays, or advertising visible from the street are allowed.
View full San Leandro rules →Key Facts Comparison
| Fact | Castro Valley | San Leandro |
|---|---|---|
| Residential zones | No business signage visible from street | - |
| Illuminated signs | Prohibited for home occupations | - |
| Window displays | Not allowed for business advertising | - |
| Agricultural parcels | Small ID signs may be allowed | - |
| Code reference | Title 17 Zoning / sign regulations | - |
| Exterior Signs | - | Prohibited |
| Window Signs | - | Prohibited |
| Vehicle Wraps | - | Limited |
| Online Listings | - | OK |
| Fine | - | 100+ dollars |
Highlighted rows indicate differences between cities.
Castro Valley FAQ
Can I put a small plaque by my front door?
Typically yes for standard house identification, but plaques advertising a business are generally not permitted in residential zones.
What about a magnetic sign on my work van?
Vehicle signage is allowed, but the vehicle must comply with residential parking rules when stored at home.
San Leandro FAQ
Can I put a small sign with my business name on my San Leandro house?
No. Home occupation rules prohibit any exterior signage for home-based businesses regardless of size.
Who enforces this in San Leandro?
San Leandro code enforcement at (510) 577-3394 handles most complaints. Alameda County agencies handle regional issues.
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