How many insulation & weatherization contractors are in ALPINE, CA?

3 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.

Insulation & Weatherization contractors in ALPINE, CA

3 listings

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

There are 3 insulation & weatherization contractors in ALPINE, California with a current state license as of 2026-08-31. The earliest license expiry among them is 2027-07-31; 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
HOFSTEE DRYWALL	766538	C-2, C-9	2027-07-31	ALPINE	91901	Set up workspace
INTEGRITY SPECIALTY CONTRACTING LLC	1109416	C-2	2027-08-31	ALPINE	91901	Set up workspace
SWPLUMBINC	1008750	C-2, C-4, C-36	2028-08-31	ALPINE	91901	Set up workspace

Quick answers

How many insulation & weatherization contractors are in ALPINE?: 3 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.