Licensed Plumbing (C-36) contractors in California

The California Contractors State License Board (CSLB) lists 12,023 California contractors classified C-36 (Plumbing (C-36)). Each entry below links to a full dossier with license status, insurance, bond, and enforcement — as of July 2, 2026.

Showing 6,541–6,600 of 12,023 contractors

Duane Mast
San Andreas, CA · CSLB #1117211 · as of July 2, 2026
Active · clear
Mastercraft Plumbers INC
Carlsbad, CA · CSLB #998491 · as of July 2, 2026
Active · clear
Mastercraft Plumbing
Baldwin Park, CA · CSLB #928221 · as of July 2, 2026
Active · clear
Master Elite Plumbing
Indio, CA · CSLB #1065032 · as of July 2, 2026
Active · clear
Masterflow Plumbing
Rancho Cucamonga, CA · CSLB #810730 · as of July 2, 2026
Active · clear
Masterflow Plumbing And Drain
Murrieta, CA · CSLB #1156577 · as of July 2, 2026
Active · clear
Master Line Plumbing
Citrus Heights, CA · CSLB #1093177 · as of July 2, 2026
Active · clear
Master Line Rooter & Plumbing INC
San Fernando, CA · CSLB #1013148 · as of July 2, 2026
Active · clear
Master Of Tankless Water Heaters
Dublin, CA · CSLB #1094071 · as of July 2, 2026
Active · clear
Masterpiece Plumbing
Lincoln, CA · CSLB #1146869 · as of July 2, 2026
Active · clear
Master Plumber
Stanton, CA · CSLB #465809 · as of July 2, 2026
Active · clear
Master Plumber
Los Angeles, CA · CSLB #407012 · as of July 2, 2026
Active · clear
Master Plumbers
La Habra, CA · CSLB #983906 · as of July 2, 2026
Active · clear
Master Plumbing
Tracy, CA · CSLB #1129074 · as of July 2, 2026
Active · clear
Master Plumbing
Rancho Santa Margarita, CA · CSLB #885312 · as of July 2, 2026
Active · clear
Master Plumbing
San Francisco, CA · CSLB #573292 · as of July 2, 2026
Active · clear
Master Plumbing
Burbank, CA · CSLB #744990 · as of July 2, 2026
Active · clear
Master Plumbing And Repair BY Dennis Vanderhyde
San Diego, CA · CSLB #1156929 · as of July 2, 2026
Active · clear
Master Plumbing And Sewer INC
Mountain View, CA · CSLB #812321 · as of July 2, 2026
Active · clear
Master Plumbing & Leak Detection
San Diego, CA · CSLB #777721 · as of July 2, 2026
Active · clear
Master Plumbing Solutions INC
Oakland, CA · CSLB #1154868 · as of July 2, 2026
Active · clear
Master Pro Plumbing INC
Los Banos, CA · CSLB #1031436 · as of July 2, 2026
Active · clear
Master Rooter Plumbing Service
West Covina, CA · CSLB #513577 · as of July 2, 2026
Active · clear
Master Service Plumbing INC
Reno, CA · CSLB #1032699 · as of July 2, 2026
Active · clear
Masters Of Flow
El Cajon, CA · CSLB #1119714 · as of July 2, 2026
Active · clear
Mast Plumbing Services
San Andreas, CA · CSLB #1133882 · as of July 2, 2026
Active · clear
Mast & Sons Plumbing
San Andreas, CA · CSLB #1027861 · as of July 2, 2026
Active · clear
Matador Plumbing
North Hills, CA · CSLB #1083314 · as of July 2, 2026
Active · clear
Gerardo Mata
Indio, CA · CSLB #986323 · as of July 2, 2026
Active · clear
Mata Plumbing
Los Angeles, CA · CSLB #1045892 · as of July 2, 2026
Active · clear
Mathews Mechanical
Newark, CA · CSLB #643197 · as of July 2, 2026
Active · clear
Matic Plumbing
Lawndale, CA · CSLB #810973 · as of July 2, 2026
Active · clear
Jerry Conrad Matsukuma
Los Angeles, CA · CSLB #988297 · as of July 2, 2026
Active · clear
Matsumoto Plumbing
Escondido, CA · CSLB #1074743 · as of July 2, 2026
Active · clear
Matt B Plumbing
Camarillo, CA · CSLB #1001926 · as of July 2, 2026
Active · clear
Matt - Chlor INC
El Monte, CA · CSLB #724035 · as of July 2, 2026
Active · clear
Kcjt CO DBA Matterhorn Plumbing
Gilroy, CA · CSLB #1049322 · as of July 2, 2026
Active · clear
Matthew Olivas
Covina, CA · CSLB #950208 · as of July 2, 2026
Active · clear
Matthew's Plumbing INC
Santa Clarita, CA · CSLB #913745 · as of July 2, 2026
Active · clear
Mattson Plumbing Company
Discovery Bay, CA · CSLB #1048374 · as of July 2, 2026
Active · clear
Matt's Plumbing
Santa Maria, CA · CSLB #908346 · as of July 2, 2026
Active · clear
Matt's Water System's And Plumbing
Fort Bragg, CA · CSLB #1140248 · as of July 2, 2026
Active · clear
Ken Mauch Plumbing
Lockeford, CA · CSLB #949278 · as of July 2, 2026
Active · clear
Mauerhan Plumbing INC
Glendale, CA · CSLB #247119 · as of July 2, 2026
Active · clear
Maul Plumbing
Atascadero, CA · CSLB #722733 · as of July 2, 2026
Active · clear
Mauricios Plumbing
Mira Loma, CA · CSLB #802473 · as of July 2, 2026
Active · clear
Maurilio Vega Plumbers
Lindsay, CA · CSLB #1144931 · as of July 2, 2026
Active · clear
Mauro's Plumbing INC
El Cerrito, CA · CSLB #984478 · as of July 2, 2026
Active · clear
Maverick Plumbing Technicians INC
Watsonville, CA · CSLB #1102966 · as of July 2, 2026
Active · clear
Mavericks Backflow & Plumbing LLC
San Martin, CA · CSLB #1088152 · as of July 2, 2026
Active · clear
Maverick Water Heaters & Plumbing
Moss Beach, CA · CSLB #1087607 · as of July 2, 2026
Active · clear
M A V Plumbing INC
Apple Valley, CA · CSLB #1008624 · as of July 2, 2026
Active · clear
Maxflow Plumbing
Oceanside, CA · CSLB #850451 · as of July 2, 2026
Active · clear
Patrick Lewis Schmehl Maximillion Plumbing
Livermore, CA · CSLB #826869 · as of July 2, 2026
Active · clear
Maximum Flow Plumbing INC
San Jose, CA · CSLB #1045996 · as of July 2, 2026
Active · clear
Maximum Mechanical Plumbing
Walnut, CA · CSLB #1051536 · as of July 2, 2026
Active · clear
Maximum Plumbing
Oceanside, CA · CSLB #1036395 · as of July 2, 2026
Active · clear
Maximum Plumbing INC
Burbank, CA · CSLB #1107204 · as of July 2, 2026
Active · clear
Maxstopfix LLC
Pasadena, CA · CSLB #895446 · as of July 2, 2026
Active · clear
Maxwell Plumbing INC
Bellflower, CA · CSLB #875163 · as of July 2, 2026
Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of July 2, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.