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Plumbing in Ontario, CA

49 records with this classification and Ontario as their locality of record, from CSLB's records, as of November 3, 2026.

Source: California Contractors State License Board (CSLB) — records as of November 3, 2026. Records change; the board’s own CSLB License Check is the current source.

• A 2 Z PLUMBING CLEAR
  License 1047486 · expires December 31, 2026
• ACOSTA PIPELINE INC CLEAR
  License 1064810 · expires April 30, 2028
• ALL PRO COOLING HEATING PLUMBING & ELECTRICAL CLEAR
  License 1103983 · expires April 30, 2027
• ALPHA OMEGA PLUMBING CLEAR
  License 977823 · expires November 30, 2027
• AMERICAN JETTING SERVICES INC CLEAR
  License 845651 · expires August 31, 2028
• BAUMANN WATERWORKS CLEAR
  License 1020247 · expires December 31, 2026
• BC7 CONSTRUCTION INC CLEAR
  License 1049615 · expires January 31, 2027
• BRIAN YAWCHING KAO CLEAR
  License 897876 · expires June 30, 2027
• C 2 C PLUMBING INC CLEAR
  License 1058502 · expires September 30, 2027
• D M GORDER CONSTRUCTION CO CLEAR
  License 632348 · expires November 30, 2027
• DYLAN'S PLUMBING GROUP INC CLEAR
  License 1136831 · expires April 30, 2027
• E A PLUMBING INC CLEAR
  License 603170 · expires September 30, 2028
• ELIAS PLUMBING CLEAR
  License 1105933 · expires June 30, 2027
• FAIRCHILD PLUMBING & MECHANICAL INC CLEAR
  License 606705 · expires November 30, 2026
• FLOW DYNAMICS INC CLEAR
  License 858166 · expires May 31, 2028
• G & G PLUMBING CLEAR
  License 508994 · expires September 30, 2027
• G & S REASONABLE PLUMBING / ALL TECH CLEAR
  License 764181 · expires November 30, 2026
• GRACE ROOTER AND PLUMBING CLEAR
  License 817808 · expires March 31, 2027
• HIGH SPEED ROOTER AND PLUMBING INC CLEAR
  License 1017796 · expires August 31, 2028
• HO SOO YOO CLEAR
  License 703553 · expires March 31, 2027
• IN AND OUT PLUMBING CLEAR
  License 1030564 · expires August 31, 2027
• INTER-CITY ENERGY SYSTEMS INC CLEAR
  License 587709 · expires February 29, 2028
• J M E PLUMBING INC CLEAR
  License 1083921 · expires November 30, 2027
• JAKE SANDOVAL DBA CLEARWATER PLUMBING & CONSTRUCTION CLEAR
  License 980596 · expires January 31, 2027
• JN CONSTRUCTION INC CLEAR
  License 1001396 · expires February 28, 2027
• JNSD CONSTRUCTION INC CLEAR
  License 1080741 · expires September 30, 2027
• JOSE LUIS PALACIOS CLEAR
  License 986197 · expires August 31, 2027
• LVL UP PLUMBING INC CLEAR
  License 1146179 · expires July 31, 2028
• NELISSEN PLUMBING CLEAR
  License 1142166 · expires August 31, 2027
• ORANGE INDEPENDENT PLUMBING SERVICES CLEAR
  License 1005919 · expires April 30, 2027
• P V & C PLUMBING AND PIPING INC CLEAR
  License 529259 · expires May 31, 2028
• PISCES PLUMBING CLEAR
  License 1133446 · expires February 28, 2027
• PRO ROOTER GUYS INC CLEAR
  License 1052306 · expires April 30, 2027
• PRO TECH PLUMBING CLEAR
  License 915091 · expires April 30, 2028
• REED'S PLUMBING CLEAR
  License 788531 · expires September 30, 2028
• ROYALTY PLUMBING INC CLEAR
  License 1109464 · expires August 31, 2027
• RUVICO INC CLEAR
  License 1021363 · expires December 31, 2026
• SAFFORD PLUMBING CLEAR
  License 968088 · expires July 31, 2028
• SHOWTIME FAMILY PLUMBING & ROOTER INC CLEAR
  License 1151703 · expires March 31, 2028
• SIMPLE RESTORATION INC CLEAR
  License 1066954 · expires July 31, 2028
• SM WATERWORKS BACKFLOW SERVICE CLEAR
  License 1115619 · expires January 31, 2028
• SPEC CONSTRUCTION CO INC CLEAR
  License 419626 · expires August 31, 2027
• STS PLUMBING & ROOTER INC CLEAR
  License 1140510 · expires July 31, 2027
• SWEET WATER LANDSCAPING CLEAR
  License 817917 · expires April 30, 2027
• THE SPECIALIST PLUMBING CLEAR
  License 915935 · expires May 31, 2028
• VARGOS PLUMBING & SEWER INC CLEAR
  License 1138500 · expires June 30, 2027
• WATER SOLUTIONS CLEAR
  License 954619 · expires November 30, 2028
• WEST COAST PIPELINE SPECIALIST CLEAR
  License 1129511 · expires November 30, 2028
• WEST COAST PLUMBING CLEAR
  License 853144 · expires January 31, 2027