Who can legally replace windows and doors in California?
Swapping windows, sliding or French doors, and entry doors in existing openings.
Check a specific contractor for this job
Their license page will open with this job selected and the verdict shown.
Licensed for this work
C-17 Glazing covers windows and glass doors.
D-28 covers doors, gates and the hardware that operates them.
Licensed, with a condition
C-6 finish carpentry covers hanging and trimming doors, not the glazing side of window replacement.
Windows and doors are two trades, so a B may take the job if both are in the contract, or by holding or subcontracting to a C-17 / D-28 for a single one. Enlarging an opening in a load-bearing wall is B work in its own right. (§7057(b))
Only as part of a contract with three or more unrelated trades, and only in existing openings — no structural changes. (§7057.5)
Basis: B&P Code §7057(b); B&P Code §7057.5; B&P Code §7058. A California contractor may only contract for work within their classification (B&P Code §7059), with an exception for work incidental and supplemental to their own trade (16 CCR §831). This page reads the classification rules; it is not legal advice and says nothing about quality of work. Confirm with CSLB before signing.