Permit Required
Do you need a permit to replace a furnace in Los Angeles, CA?
A mechanical permit is required to install or replace a gas furnace/heater. Units under 500,000 Btu/h qualify for an Express Permit (no plan check).
✓ Verified from official source
Source: LADBS Information Bulletin P/GI 2020-003 — Express Permits — Verified 2026-06-26
Permit rules vary by property and change over time. This is an informational guide, not legal advice — always confirm with Los Angeles Department of Building and Safety (LADBS) before starting work.
How to get the permit in Los Angeles
Building department
Apply online
Phone
(213) 482-7210
Code in force
2023 City of Los Angeles Residential Code (based on 2022 California Residential Code / CRC, derived from the IRC)
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