How many plumbing contractors are in SAN ANSELMO, CA?

7 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.

Plumbing contractors in SAN ANSELMO, CA

7 listings

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

There are 7 plumbing contractors in SAN ANSELMO, California with a current state license as of 2026-08-31. The earliest license expiry among them is 2026-12-31; 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
GRIER ARGALL PLUMBING INC	736901	C-36	2026-12-31	SAN ANSELMO	94979	Set up workspace
HYDRONICS INC	865623	C-4	2027-10-31	SAN ANSELMO	94960	Set up workspace
IAN DUNNE PLUMBING	1048540	C-36	2027-01-31	SAN ANSELMO	94960	Set up workspace
JBK MECHANICAL INC	448914	C-36	2027-11-30	SAN ANSELMO	94979	Set up workspace
MASON PLUMBING INC	817803	C-36	2027-04-30	SAN ANSELMO	94979	Set up workspace
STROM ELECTRIC INC	480976	C-10, C-36	2027-10-31	SAN ANSELMO	94979	Set up workspace
WILSON'S PLUMBING	623217	C-36	2027-07-31	SAN ANSELMO	94960	Set up workspace

Quick answers

How many plumbing contractors are in SAN ANSELMO?: 7 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.