How many windows & doors contractors are in DIAMOND BAR, CA?

2 with a current California license, as of 2026-08-31.

How do I check a California contractor license is current?

Every listing shows its state license number and expiry date. Verify any of them directly against the California CSLB licensee database.

Windows & Doors contractors in DIAMOND BAR, CA

2 listings

Source: California CSLB license records. Last verified 2026-08-31.

There are 2 windows & doors contractors in DIAMOND BAR, California with a current state license as of 2026-08-31. The earliest license expiry among them is 2027-10-31; every listing shows its own number and expiry date. All are drawn from the California CSLB register; expired and inactive licenses are excluded.

Business	License	Type	Expires	City	Zip
K M K GLAZING CONTRACTORS	917948	C-17	2028-06-30	DIAMOND BAR	91765	Set up workspace
QUALITY CONTRACT GLAZING	826550	C-17	2027-10-31	DIAMOND BAR	91723	Set up workspace

Quick answers

How many windows & doors contractors are in DIAMOND BAR?: 2 with a current California license, as of 2026-08-31.
How do I check a license is current?: Every listing shows its state license number and expiry. Verify any of them directly against the California CSLB licensee database.