Signage Rules: Castro Valley vs Oakland
How do signage rules rules compare between Castro Valley, CA and Oakland, CA?
Castro Valley and Oakland 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 →Oakland, CA
Alameda County
Oakland Municipal Code 17.102.040 limits home-occupation signage to one non-illuminated sign no larger than two square feet, attached flat to the building, with no advertising visible from the public right-of-way beyond that minor identification.
View full Oakland rules →Key Facts Comparison
| Fact | Castro Valley | Oakland |
|---|---|---|
| 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 | - |
| - | - |
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.
Oakland FAQ
Can I put a sign in my window advertising my home business?
No. OMC 17.102 limits home-occupation signage to a single 2-square-foot wall-mounted sign. Interior window signs visible from the street advertising the business are prohibited.
Can I have a lighted sign for my home business?
No. The ordinance explicitly requires the permitted sign to be non-illuminated. Any internal or external illumination advertising the business is a violation.
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