How many plumbing contractors are in ALTADENA, CA?

20 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 ALTADENA, CA

20 listings

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

There are 20 plumbing contractors in ALTADENA, 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
AIR CONDITIONING SOLUTIONS INC	863580	B, C-4, C-20, C-36, C-38	2027-08-31	ALTADENA	91001	Set up workspace
ALTADENA HANDYMAN LLC DBA AH REPIPE AND PLUMBING	1025813	C-36	2027-06-30	ALTADENA	91001	Set up workspace
ALTADENA PLUMBING & DRAIN SERVICE	910916	C-36	2027-11-30	ALTADENA	91001	Set up workspace
AR PRO RETROFITTER INC	940874	C-36, D52	2027-04-30	ALTADENA	91003	Set up workspace
CHRISTOPHER M POTTER	1062587	C-36	2028-01-31	ALTADENA	91001	Set up workspace
CROSBY CONSTRUCTION	994490	A, B, C-34, C-36	2028-07-31	ALTADENA	91001	Set up workspace
E L PLUMBING WORKS	982622	C-36	2027-04-30	ALTADENA	91001	Set up workspace
G- 12 PLUMBING	1015408	C-36	2028-06-30	ALTADENA	91001	Set up workspace
GERALD PAYNE PLUMBING & CONSTRUCTION	947434	B, C-36	2028-05-31	ALTADENA	91001	Set up workspace
H & H MECHANICAL INC	644029	C-4, C-20	2026-12-31	ALTADENA	91001	Set up workspace
HICKEY PLUMBING	459923	C-36	2028-07-31	ALTADENA	91001	Set up workspace
H P DANIELS CONSTRUCTION	891007	B, C-10, C-36	2027-02-28	ALTADENA	91001	Set up workspace
INBOUND PLUMBING	1088617	C-36	2026-12-31	ALTADENA	91001	Set up workspace
LT ROSS PLUMBING LLC	1107926	C-36	2027-08-31	ALTADENA	91001	Set up workspace
OSMART GENERAL CONSTRUCTION INC	922233	B, C-9, C-36	2027-01-31	ALTADENA	91003	Set up workspace
RIGHT - ON PLUMBING	935422	C-36	2028-06-30	ALTADENA	91001	Set up workspace
RUSTIC CONSTRUCTION ENTERPRISES	449067	B, C-36	2027-11-30	ALTADENA	91001	Set up workspace
SAL T VARGAS PLUMBING CORPORATION	772347	C-36	2027-12-31	ALTADENA	91001	Set up workspace
SIMCO MECHANICAL INC	974288	B, C-20, C-36	2028-06-30	ALTADENA	91001	Set up workspace
U S PLUMBING	837455	C-36	2028-05-31	ALTADENA	91001	Set up workspace

Quick answers

How many plumbing contractors are in ALTADENA?: 20 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.