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Licensed plumbers in Ontario
49 contractors with a Ontario mailing address hold an active (CLEAR) CSLB C-36 Plumbing license in CSLB's license file dated Oct 20, 2026. Get quotes from up to 3 of them →
Plumbing work calls for a C-36 Plumbing license. A B general builder can do plumbing only as part of a larger job with other unrelated trades, unless they also hold a C-36.
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A Featured spot on this plumbing page for Ontario is a paid ad for a License Verified contractor, labeled "Ad" every time. It sits apart from the directory and never changes the order below. From $49/mo. Join the waitlist →
Ad space · openAdvertise here
A Featured spot on this plumbing page for Ontario is a paid ad for a License Verified contractor, labeled "Ad" every time. It sits apart from the directory and never changes the order below. From $49/mo. Join the waitlist →
All 49 licensed plumbers
Order: A–Z by business name (neutral, stated). Showing 1–49. A 2 Z PLUMBING
C-36 · Lic. #1047486 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
ACOSTA PIPELINE INC
C-36 · also A · Lic. #1064810 · Ontario 91762
Workers' comp policy on file
Active — CSLB flag: "FAM Sup Tmp Lic"
ALL PRO COOLING HEATING PLUMBING & ELECTRICAL
C-36 · also C-10, C-20 · Lic. #1103983 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
ALPHA OMEGA PLUMBING
C-36 · Lic. #977823 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
AMERICAN JETTING SERVICES INC
C-36 · Lic. #845651 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
BAUMANN WATERWORKS
C-36 · Lic. #1020247 · Ontario 91764
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
BC7 CONSTRUCTION INC
C-36 · also B · Lic. #1049615 · Ontario 91764
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
BRIAN YAWCHING KAO
C-36 · also B, C-10, C-20 · Lic. #897876 · Ontario 91764
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
D M GORDER CONSTRUCTION CO
C-36 · also B, C-54 · Lic. #632348 · Ontario 91764
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
DYLAN'S PLUMBING GROUP INC
C-36 · Lic. #1136831 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
E A PLUMBING INC
C-36 · Lic. #603170 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
ELIAS PLUMBING
C-36 · Lic. #1105933 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
FAIRCHILD PLUMBING & MECHANICAL INC
C-36 · also A, C-16 · Lic. #606705 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
FLOW DYNAMICS INC
C-36 · Lic. #858166 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
G & G PLUMBING
C-36 · Lic. #508994 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
G & S REASONABLE PLUMBING / ALL TECH
C-36 · Lic. #764181 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
GRACE ROOTER AND PLUMBING
C-36 · Lic. #817808 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
HIGH SPEED ROOTER AND PLUMBING INC
C-36 · also A, C-10, C-20, C-42 · Lic. #1017796 · Ontario 91762
Workers' comp: via leasing/temp firm
✓License Verified CSLB file · Oct 20, 2026
HO SOO YOO
C-36 · also B, C-10, C-38 · Lic. #703553 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
IN AND OUT PLUMBING
C-36 · Lic. #1030564 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
INTER-CITY ENERGY SYSTEMS INC
C-36 · also B, C-10, C-20 · Lic. #587709 · Ontario 91764
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
J M E PLUMBING INC
C-36 · Lic. #1083921 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
JAKE SANDOVAL DBA CLEARWATER PLUMBING & CONSTRUCTION
C-36 · also B · Lic. #980596 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
JN CONSTRUCTION INC
C-36 · also A, B, C-10, C-16… · Lic. #1001396 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
JNSD CONSTRUCTION INC
C-36 · also B, C-10, C-16 · Lic. #1080741 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
JOSE LUIS PALACIOS
C-36 · Lic. #986197 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
LVL UP PLUMBING INC
C-36 · Lic. #1146179 · Ontario 91758
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
NELISSEN PLUMBING
C-36 · Lic. #1142166 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
NORTHSTAR PHAC INC
C-36 · also C-20 · Lic. #916254 · Ontario 91761
Workers' comp: via leasing/temp firm
✓License Verified CSLB file · Oct 20, 2026
ORANGE INDEPENDENT PLUMBING SERVICES
C-36 · Lic. #1005919 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
P V & C PLUMBING AND PIPING INC
C-36 · Lic. #529259 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
PISCES PLUMBING
C-36 · also C-20 · Lic. #1133446 · Ontario 91764
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
PRO ROOTER GUYS INC
C-36 · Lic. #1052306 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
PRO TECH PLUMBING
C-36 · also C-42 · Lic. #915091 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
REED'S PLUMBING
C-36 · Lic. #788531 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
ROYALTY PLUMBING INC
C-36 · Lic. #1109464 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
RUVICO INC
C-36 · Lic. #1021363 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
SAFFORD PLUMBING
C-36 · Lic. #968088 · Ontario 91764
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SHOWTIME FAMILY PLUMBING & ROOTER INC
C-36 · Lic. #1151703 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
SIMPLE RESTORATION INC
C-36 · also B · Lic. #1066954 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
SM WATERWORKS BACKFLOW SERVICE
C-36 · also A, C-60 · Lic. #1115619 · Ontario 91764
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SPEC CONSTRUCTION CO INC
C-36 · also A, B, C-4, C-8… · Lic. #419626 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
STS PLUMBING & ROOTER INC
C-36 · Lic. #1140510 · Ontario 91764
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SWEET WATER LANDSCAPING
C-36 · also C-27 · Lic. #817917 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
THE SPECIALIST PLUMBING
C-36 · Lic. #915935 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
VARGOS PLUMBING & SEWER INC
C-36 · Lic. #1138500 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
WATER SOLUTIONS
C-36 · Lic. #954619 · Ontario 91764
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
WEST COAST PIPELINE SPECIALIST
C-36 · also A, C-10 · Lic. #1129511 · Ontario 91762
Workers' comp: via leasing/temp firm
✓License Verified CSLB file · Oct 20, 2026
WEST COAST PLUMBING
C-36 · Lic. #853144 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026