California / Los Angeles

HVAC Permit in Los Angeles, California

By Mario Bailey Last verified 2026-06-17 · 2 official sources

Quick answer

A mechanical permit is required in Los Angeles for HVAC work. A/C installations and replacements under 500,000 Btu/h qualify for the Express Permit program (no plan check). Duct work alteration and equipment relocation within the building are also eligible for Express Permits. A licensed contractor is typically required for mechanical work.

Permit required?

Yes, a permit is required.

When a permit is usually needed

For all HVAC installation or replacement work

Permit cost and what affects it

Fees are set by the locality and are not published here. See the official fee schedule or contact the office for current amounts.

Permit costs generally depend on the project valuation, the scope of work, and the inspections required. Ask the office how the fee is calculated for your specific project.

Where to apply

Los Angeles Department of Building and Safety

Frequently asked questions

Do you need a hvac permit in Los Angeles?
A mechanical permit is required in Los Angeles for HVAC work. A/C installations and replacements under 500,000 Btu/h qualify for the Express Permit program (no plan check). Duct work alteration and equipment relocation within the building are also eligible for Express Permits. A licensed contractor is typically required for mechanical work. Always confirm with the Los Angeles Department of Building and Safety before starting.
How much does a hvac permit cost in Los Angeles?
Fees are set by Los Angeles and are not published here. Contact the office for current amounts.
How long does a hvac permit take in Los Angeles?
Processing time for a hvac permit in Los Angeles varies by workload and project scope. Contact the Los Angeles Department of Building and Safety for a current estimate.
Where do you apply for a hvac permit in Los Angeles?
You can apply through the Los Angeles permit portal or contact the Los Angeles Department of Building and Safety directly. The links are listed on this page.

Official sources

Last verified: 2026-06-17 Report an error on this page

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