Permit Requirements: Downey vs Santa Clarita
How do permit requirements rules compare between Downey, CA and Santa Clarita, CA?
Santa Clarita has fewer restrictions than Downey.
Downey, CA
Los Angeles County
Fences over 42 inches require a building permit in Downey. Fences at or below 42 inches still need Planning and possibly Engineering approval. Street side yard fences up to 7 ft allowed with 3 ft setback from property line.
View full Downey rules →Santa Clarita, CA
Los Angeles County
Santa Clarita exempts most standard residential fences from building permits. Chain link or wire fences under 12 feet, wood/vinyl/wrought iron fences under 6 feet, and block walls under 42 inches do not require permits. Fences in flood hazard zones require permits.
View full Santa Clarita rules →Key Facts Comparison
| Fact | Downey | Santa Clarita |
|---|---|---|
| Permit Threshold | Over 42 inches | - |
| Under 42 in | Planning approval still needed | - |
| Street Side | Up to 7 ft with 3 ft setback | - |
| Corner Cutback | 30-inch max for visibility | - |
| No Permit | - | Most fences under 6 ft |
| Chain Link | - | Exempt up to 12 feet |
| Block Walls | - | Exempt up to 42 inches |
| Flood Zones | - | Permit required |
| HOA | - | Separate approval may be needed |
Highlighted rows indicate differences between cities.
Downey FAQ
Do I need a permit to build a fence in Downey?
Fences over 42 inches require a building permit in Downey. Fences at or below 42 inches still need Planning and possibly Engineering approval. Street side yard fences up to 7 ft allowed with 3 ft setback from property line.
How much does a fence permit cost in Downey?
Permit Threshold: Over 42 inches. Under 42 in: Planning approval still needed. Street Side: Up to 7 ft with 3 ft setback. Corner Cutback: 30-inch max for visibility.
Santa Clarita FAQ
Do I need a fence permit in Santa Clarita?
Not for standard fences under 6 feet (or chain link under 12 feet). Fences in flood hazard areas always require permits. Check if your HOA requires design approval.
Do I need a permit for a block wall in Santa Clarita?
Block walls up to 42 inches are permit-exempt. Taller masonry walls require a building permit with engineering for seismic and lateral load compliance.
Can I build a retaining wall without a permit in Santa Clarita?
Retaining walls up to 4 feet of exposed height (measured from bottom of footing to top of wall) and without surcharge loads are typically permit-exempt. Taller walls need a permit.
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