Permit Requirements: Castro Valley vs Hayward
How do permit requirements rules compare between Castro Valley, CA and Hayward, CA?
Castro Valley and Hayward have similar restriction levels.
Castro Valley, CA
Alameda County
Alameda County requires a building permit for fences over 7 feet tall in unincorporated areas. Fences under 7 feet generally do not need a permit but must comply with zoning height and setback limits.
View full Castro Valley rules →Hayward, CA
Alameda County
Hayward fences up to 6 feet in residential zones generally need no permit. Fences over 6 feet, masonry walls, retaining walls over 3 feet, and pool barriers require permits.
View full Hayward rules →Key Facts Comparison
| Fact | Castro Valley | Hayward |
|---|---|---|
| Permit threshold | Over 7 feet tall | - |
| Residential front yard max | Typically 3-4 feet | - |
| Side and rear yard max | Typically 6-7 feet | - |
| Permit authority | Alameda County CDA | - |
| Contact | (510) 272-6984 | - |
| No Permit | - | Wood/vinyl under 6 ft |
| Permit Required | - | Over 6 ft, masonry, retaining |
| Retaining Wall | - | Permit if over 3 ft |
| Pool Barriers | - | Permit always |
| Typical Fee | - | 100 to 300 dollars |
Highlighted rows indicate differences between cities.
Castro Valley FAQ
Do I need a permit for a 6-foot wood fence?
No, a standard 6-foot wood fence in a side or rear yard typically does not require a building permit in unincorporated Alameda County, but it must comply with zoning setbacks.
Can I build a fence on the property line?
Yes, fences may be built on the property line in most residential zones, but you should verify the line with a survey and discuss with neighbors under CA Civil Code 841.
Hayward FAQ
Do I need a permit to replace an existing fence?
Not if replacing like-for-like up to 6 feet in the same location; upgrades in height or masonry materials trigger permits.
Is a survey required?
Typically only for fences near property lines where disputes exist or for masonry walls near easements.
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