C36

Plumbing Contractor Verification - Page 3

18,080 plumbing contractors checked against 6 data sources (Page 3 of 362)

About C36 License

Plumbing contractors for pipes, fixtures, and water systems.

18,080

Total Contractors

17,364

Active Licenses

478

Federal Records

Verify a Plumbing Contractor

Plumbing Contractors

Showing contractors 101-150 of 18,080

UNITED RIGGERS & ERECTORS INC

3 flags

License #245451 · WALNUT

Active

VALS PLUMBING AND HEATING INC

3 flags

License #236164 · SALINAS

Active

VAN DIEST BROS INC

3 flags

License #157555 · PARAMOUNT

Active

WAGNER MECHANICAL INC

3 flags

License #507799 · LINDEN

Active

WEEKS DRILLING AND PUMP CO

3 flags

License #177681 · SEBASTOPOL

Active

ABE'S PLUMBING INC

2 flags

License #613580 · DOWNEY

Active

AIR CONDITIONING SOLUTIONS INC

2 flags

License #863580 · ALTADENA

Active

ALLIED HEATING & AIR CONDITIONING CO INC

2 flags

License #453261 · SAN RAFAEL

Active

AMESOS PLUMBING INC

2 flags

License #814542 · SAN RAFAEL

Active

AYOOB & PEERY PLUMBING CO INC

2 flags

License #392967 · SAN FRANCISCO

Active

BAY AREA BACKFLOW INC

2 flags

License #983194 · GILROY

Active

BICKLEY'S AIR CONDITIONING

2 flags

License #754681 · RED BLUFF

Active

BLACKMAN PLUMBING INC

2 flags

License #659370 · EL CENTRO

Active

BOCA PLUMBING INC

2 flags

License #904260 · SAN FERNANDO

Active

BROADWAY MECHANICAL - CONTRACTORS INC

2 flags

License #584263 · OAKLAND

Active

BROWN PLUMBING

2 flags

License #555316 · REDDING

Active

BROWNCO CONSTRUCTION COMPANY INC

2 flags

License #769921 · ANAHEIM

Active

CA-BOLCO CONSTRUCTION CO

2 flags

License #782492 · BURLINGAME

Active

CAL - PACIFIC CONSTRUCTION INC

2 flags

License #830908 · PACIFICA

Active

CAL BUILDING & MAINTENANCE INDUSTRIES INC

2 flags

License #741907 · HAWTHORNE

Active

CASTILLO CONSTRUCTION CO

2 flags

License #257339 · IMPERIAL

Active

CENTURY WEST PLUMBING

2 flags

License #766475 · WESTLAKE VILLAGE

Active

COLLINS PACIFIC PLUMBING INC

2 flags

License #567701 · SAN DIEGO

Active

COLLINS PLUMBING INC

2 flags

License #663819 · EL CAJON

Active

COUNTYWIDE MECHANICAL SYSTEMS LLC

2 flags

License #1111305 · EL CAJON

Active

COUTS HEATING & COOLING INC

2 flags

License #375584 · CORONA

Active

CUMBERLAND PLUMBING INC

2 flags

License #953784 · OROVILLE

Active

DE HART PLUMBING HEATING & AIR INC

2 flags

License #724566 · MODESTO

Active

DEMAKAS PLUMBING & HEATING INC

2 flags

License #349523 · SAN FRANCISCO

Active

DIETLE PLUMBING INC

2 flags

License #693870 · LODI

Active

DINELLI PLUMBING INCORPORATED

2 flags

License #801472 · FOSTER CITY

Active

DODDS PLUMBING

2 flags

License #1123514 · TULARE

Active

DOUGHERTY PUMP & DRILLING INC

2 flags

License #267768 · SALINAS

Active

EGAN PLUMBING INC

2 flags

License #484784 · SAN CARLOS

Active

ENVIRONMENTAL SYSTEMS INC

2 flags

License #422478 · SANTA CLARA

Active

FLAMINGO CONSTRUCTION INC

2 flags

License #999182 · STUDIO CITY

Active

FLETCHER PLUMBING

2 flags

License #727566 · LOOMIS

Active

FOUR C'S CONSTRUCTION

2 flags

License #908294 · FRESNO

Active

GIBSON PLUMBING INC

2 flags

License #593968 · NORCO

Active

HENRIK PLUMBING COMPANY

2 flags

License #650806 · LOS ANGELES

Active

HENRIK PLUMBING INC

2 flags

License #741020 · LOS ANGELES

Active

INCOM MECHANICAL INC

2 flags

License #517617 · PETALUMA

Active

KNECHT'S PLUMBING & HEATING INC

2 flags

License #373936 · SAN LUIS OBISPO

Active

LA JOLLA PLUMBING

2 flags

License #796042 · SAN DIEGO

Active

LAWTON CONSTRUCTION AND RESTORATION INC

2 flags

License #891067 · LINCOLN

Active

LEGACY MECHANICAL & ENERGY SERVICES INC

2 flags

License #808022 · SAN RAMON

Active

LOVAZZANO MECHANICAL INCORPORATED

2 flags

License #619015 · MENLO PARK

Active

MARTINEZ SHEET METAL INC

2 flags

License #222277 · MARTINEZ

Active

MERZ CONSTRUCTION INC

2 flags

License #477564 · SAN DIEGO

Active

NOEL PLUMBING INC

2 flags

License #749069 · SAN DIEGO

Active

How to Verify a Plumbing Contractor (C36) in California

California requires all contractors performing plumbing work valued at $500+ to hold a valid CSLB C36 license. Of the 18,080 licensed plumbing contractors in the state, 96% currently hold active licenses and 2.6% have at least one federal compliance record.

Manual vetting takes 45+ minutes per contractor and routinely misses violations in databases most people don't know to check. SiteVetter runs CSLB status, SAM.gov debarment, DOL wage violations, OSHA safety citations, and EPA environmental records in seconds—creating a timestamped compliance artifact.

Verification Checklist for Plumbing Contractors

  • Confirm licensing for your specific plumbing needs (water heaters, gas lines, sewer)
  • Ask about experience with local building codes and inspection requirements
  • Check if they offer emergency service availability
  • Check federal databases: SAM.gov, OSHA, DOL, and EPA records
  • Confirm bond: California requires $25,000+ contractor bond (SB 607)

Why Verification Matters for Plumbing Work

Under California's "Controlling Employer" doctrine, general contractors face liability for subcontractor safety violations. For plumbing work specifically, 2.6% of licensed contractors have federal records that a standard CSLB license check wouldn't reveal. SiteVetter's 5-database check catches what a single-source verification misses.

Data sourced from California Contractors State License Board and federal databases. Updated weekly. For official verification, check directly with CSLB.