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Plumbing in Walnut, CA

20 records with this classification and Walnut 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 DRAIN DOCTOR CLEAR
  License 803591 · expires January 31, 2028
• BRUCE'S PLUMBING SERVICE CLEAR
  License 904642 · expires October 31, 2027
• CHRISTOPHER BONILLA CLEAR
  License 1002675 · expires April 30, 2027
• DAVID LI CLEAR
  License 1111958 · expires October 31, 2027
• DONG TSAIR HWANG CLEAR
  License 697328 · expires October 31, 2028
• EXPERT HVAC SERVICE INC CLEAR
  License 1115612 · expires January 31, 2028
• G PHILLIPS PLUMBING CLEAR
  License 526195 · expires March 31, 2027
• JOHN THE PLUMBER CLEAR
  License 669082 · expires April 30, 2027
• KP PLUMBING INC CLEAR
  License 1044093 · expires May 31, 2028
• LA HABRA FIRE PROTECTION AND PLUMBING CLEAR
  License 757985 · expires January 31, 2027
• MAXIMUM MECHANICAL PLUMBING CLEAR
  License 1051536 · expires March 31, 2027
• MAXIMUS BUILDERS INC CLEAR
  License 1000594 · expires January 31, 2027
• MICHAEL JOELLSON CLEAR
  License 957335 · expires April 30, 2027
• MTEC CLEAR
  License 873492 · expires December 31, 2026
• PEACECAL PLUMBING CLEAR
  License 1144632 · expires October 31, 2027
• POMONA VALLEY PLUMBING HEATING AIR CONDITIONING CO INC CLEAR
  License 1019549 · expires October 31, 2028
• SCOTT CHIEN CLEAR
  License 1089712 · expires April 30, 2028
• SELECT PLUMBING Contr Bond Susp
  License 816005 · expires December 31, 2026
• UNITED RIGGERS & ERECTORS INC CLEAR
  License 245451 · expires March 31, 2028
• WALNUT PLUMBING CLEAR
  License 1005582 · expires July 31, 2027