Residential / commercial scope
Both
Replacing or adding heating and cooling equipment — including like-for-like A/C change-outs and duct work without a smoke-control system — is typically a mechanical express permit.
Category
Mechanical / HVAC
Plans required?
No
Where to go
PermitLA
Over-the-counter?
Over-the-counter
Likely clearances
None in most cases
Residential vs commercial
Residential HVAC is an express PermitLA permit. Commercial rooftop, packaged, or ducted systems may need mechanical plan check in ePlanLA - confirm when you apply.
Search keywords
hvac, air conditioning, ac, furnace, heating, mini split, mechanical, duct, ductwork, same size, change-out, like-for-like, replace ac
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