Residential / commercial scope
Both
Installing radiant barrier or insulation in an attic, walls, or floor on a single-family dwelling or duplex is typically an express building permit. Multi-family and commercial need plan review for code compliance.
Category
Repairs & Maintenance
Plans required?
Sometimes
Where to go
PermitLA for express permits, ePlanLA for plan review
Over-the-counter?
Yes - usually issued the same day for single-family dwellings and duplexes
Likely clearances
None in most cases
Residential vs commercial
A one-to-two family dwelling installation of insulation is an express PermitLA permit. Multi-family and commercial insulation needs plan check review in ePlanLA.
Search keywords
insulation, attic insulation, wall insulation, floor insulation, radiant barrier, batts, blown-in
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