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

10 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 OAKLAND, CA

10 listings

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

There are 10 insulation & weatherization contractors in OAKLAND, California with a current state license as of 2026-08-31. The earliest license expiry among them is 2026-10-31; 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
AMERICAN ATTIC	1059651	C-2	2027-10-31	OAKLAND	94605	Set up workspace
AMG	586844	A, ASB, B, C-2, C-21, C-22, HAZ	2028-01-31	OAKLAND	94608	Set up workspace
ATTIC PROS INC	1022608	B, C-2, C-10, C-20, C-36	2027-01-31	OAKLAND	94603	Set up workspace
BAYVIEW INDUSTRIAL SERVICES INC	1019537	A, B, C-2, C-21, C-22, HAZ	2026-10-31	OAKLAND	94621	Set up workspace
DRYCREW RESTORATION CONTRACTOR	1073575	B, C-2, D39	2027-02-28	OAKLAND	94621	Set up workspace
HVAC OREN SERVICES LLC	1048662	C-2, C-20	2027-01-31	OAKLAND	94603	Set up workspace
JOHNSON'S INSULATION	1051108	C-2, C-20, D64	2027-03-31	OAKLAND	94612	Set up workspace
MCCOY INSULATION	864203	C-2	2027-10-31	OAKLAND	94603	Set up workspace
M G DRYWALL	1041115	B, C-2, C-9	2028-06-30	OAKLAND	94603	Set up workspace
PACIFIC STATES INSULATION & ACOUSTICAL CONTRACTING INC	939943	C-2	2027-11-30	OAKLAND	94621	Set up workspace

Quick answers

How many insulation & weatherization contractors are in OAKLAND?: 10 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.