Building Permits in Downey, California
City in Los Angeles County
Verified August 2026
Adopted Construction Codes
These are the state-level code editions for California. They apply in Downeyunless a verified local adoption or amendment is noted — in local-adoption states, confirm the city or county's own code editions with the building department.
Permit Requirements
building permit
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Building Department
Permit fee schedule ↗ · fee schedule checked August 2026
Construction and plan check fees are valuation-based, with project valuation determined by the Building Official per the posted fee schedule and valuation table.
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