How many plumbing contractors are in HERCULES, CA?

9 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 HERCULES, CA

9 listings

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

There are 9 plumbing contractors in HERCULES, 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
CITY MECHANICAL INC	622065	C-4, C-20, C-36, C-38	2027-06-30	HERCULES	94547	Set up workspace
DONALD PROFESSIONAL	638599	C-10, C-36, C-38	2028-02-29	HERCULES	94547	Set up workspace
GABRIEL SERRATO PLUMBING	1014702	C-36	2028-05-31	HERCULES	94547	Set up workspace
HYDROTECH RADIANT AND BOILERS	1097125	C-4	2028-09-30	HERCULES	94547	Set up workspace
IMPRESSIVE PLUMBING	791342	C-36	2027-02-28	HERCULES	94547	Set up workspace
JACKSON AND SON	774463	B, C-36	2028-02-29	HERCULES	94547	Set up workspace
PLUMBING PRO	930861	C-36, C-42	2027-04-30	HERCULES	94547	Set up workspace
RAZO PLUMBING	1048294	C-36	2026-12-31	HERCULES	94547	Set up workspace
R V O ROOTER & PLUMBING	794676	C-34, C-36	2027-05-31	HERCULES	94547	Set up workspace

Quick answers

How many plumbing contractors are in HERCULES?: 9 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.