Building permits in California exist to ensure work meets code, is inspected by a qualified official, and is documented for future buyers and insurers. Here is how the process works.
Who Pulls the Permit
Permits are pulled either by the homeowner (owner-builder) or by a licensed contractor. When you hire a licensed GC, they typically pull all permits in their name — they are responsible for code compliance. Owner-builder permits are for work you personally perform; using one to enable an unlicensed contractor is illegal.
What Requires a Permit
Structural work, electrical beyond simple fixture swaps, plumbing beyond like-for-like replacement, HVAC installation, roof replacement, ADU construction, room additions, decks over certain heights, and swimming pools. Cosmetic work — painting, flooring, cabinet replacement without structural changes — generally does not require permits.
What Happens Without a Permit
Unpermitted work will appear on a property records search at sale. Buyers may require remediation or price reduction. In some cases you may be required to demolish and redo the work. Retroactive permitting almost always costs more than the original permit would have.