How many plumbing contractors are in CLAYTON, 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 CLAYTON, CA

7 listings

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

There are 7 plumbing contractors in CLAYTON, California with a current state license as of 2026-08-31. The earliest license expiry among them is 2026-09-30; 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
ALBRIGHT PLUMBING	858118	C-36	2027-04-30	CLAYTON	94517	Set up workspace
CALIFORNIA BOILER WORKS INCORPORATED	812451	C-4	2028-03-31	CLAYTON	94517	Set up workspace
CONTRA COSTA PLUMBING	303993	C-10, C-36	2026-09-30	CLAYTON	94517	Set up workspace
DG PLUMBING	1120226	C-36	2028-05-31	CLAYTON	94517	Set up workspace
M P PLUMBING	979512	C-36	2026-12-31	CLAYTON	94517	Set up workspace
RICH MC CARTHY PLUMBING	566929	C-36	2027-05-31	CLAYTON	94517	Set up workspace
VOLGA PLUMBING	639239	C-36	2028-03-31	CLAYTON	94517	Set up workspace

Quick answers

How many plumbing contractors are in CLAYTON?: 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.