Shed Rules: Castaic vs Downey
How do shed rules rules compare between Castaic, CA and Downey, CA?
Castaic has fewer restrictions than Downey.
Castaic, CA
Los Angeles County
Small accessory structures under 120 square feet in unincorporated LA County generally do not require a building permit. Larger structures must comply with Title 26 building code and Title 22 zoning setbacks.
View full Castaic rules →Downey, CA
Los Angeles County
Downey Municipal Code Article IX regulates accessory structures. Detached accessory structures and attached patio covers may occupy up to 50% of the required rear yard. Structures must comply with setback, height, and lot coverage requirements.
View full Downey rules →Key Facts Comparison
| Fact | Castaic | Downey |
|---|---|---|
| Permit Exempt | Under 120 sq ft | - |
| Setback | 5 ft from property line | - |
| Height Limit | 15 feet | - |
| Permit From | Public Works B&S | - |
| Fire Zones | Extra standards apply | - |
| Code Section | - | Art. IX, Ch. 4 |
| Rear Yard Coverage | - | 50% max for accessory structures |
| Max Height | - | One story |
| Small Structures | - | Under 120 sq ft may be permit-exempt |
| Building & Safety | - | (562) 904-7142 |
Highlighted rows indicate differences between cities.
Castaic FAQ
Do I need a permit for a shed in unincorporated LA County?
Sheds under 120 square feet and single-story typically do not need a building permit, but must meet zoning setback requirements. Sheds 120 square feet or larger need a building permit.
How close to the property line can I put a shed?
Accessory structures generally need to be at least 5 feet from side and rear property lines per Title 22 zoning code. Check your specific zone for exact requirements.
Downey FAQ
Do I need a permit for a shed in Downey?
Small structures under 120 square feet may be exempt from building permits but must meet setback requirements. Larger structures require permits from Building & Safety.
How much of my backyard can a shed cover in Downey?
Detached accessory structures may occupy up to 50% of the required rear yard area under Article IX, Chapter 4.
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