C36

Plumbing Contractor Verification - Page 193

18,080 plumbing contractors checked against 6 data sources (Page 193 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 9601-9650 of 18,080

KMAC DESERT PLUMBING

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License #790357 · CATHEDRAL CITY

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KMP PLUMBING CO INC

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License #294110 · ESCONDIDO

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KNICKELBEIN BUILDERS

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License #375620 · PASADENA

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KNIGHT BUILDING CO

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License #674060 · SAN FRANCISCO

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KNIGHT CONSTRUCTION OF CALIFORNIA

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License #703825 · BELLA VISTA

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KNIGHT R K PLUMBING & ROOTER INC

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License #660684 · WHITTIER

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KNIGHTS PLUMBING AND DRAIN

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License #813548 · LATHROP

Active

KNISBELL JOSHUA

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License #1032718 · RIVERSIDE

Active

KNITTEL CONSTRUCTION INC

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License #501977 · NAPA

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KNOCK - OUT PLUMBING

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License #854512 · LOMITA

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KNOCKOUT PLUMBING & REPIPE INC

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License #1090643 · SAN JOSE

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KNOLL DAVE PLUMBING

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License #375413 · REEDLEY

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KNOTT JOSEPH

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License #998299 · HUNTINGTON BEACH

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KNOTT PLUMBING

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License #907805 · NEWHALL

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KNOTT TOM PLUMBING COMPANY

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License #573451 · TORRANCE

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KNOWLES BOBBIE PLUMBING

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License #1018989 · VALLEJO

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KNOWLES PIPEWORKS AND PLUMBING CORP

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License #1109687 · SAN JOSE

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KO PLUMBING INC

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License #1145043 · CARLSBAD

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KOCH PLUMBING

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License #1127706 · WILDOMAR

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KOCHER JOE PLUMBING INC

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License #735465 · CAMPBELL

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KOEHLER PLUMBING INC

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License #861363 · SANTA MARIA

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KOENIG HOWARD CONSTRUCTION

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License #258503 · LA MIRADA

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KOFMAN ENTERPRISES INC

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License #686233 · MONTEREY

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KOH KOH PLUMBING

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License #766989 · ANAHEIM

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KOHL MECHANICAL

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License #1123155 · SANTA ROSA

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KOHLER CO

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License #1098798 · CULVER CITY

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KOHLER MECHANICAL INC

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License #837376 · ALTA LOMA

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KOJIGIAN JOHN

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License #302633 · FRESNO

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KOKASKA EDWARD J

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License #458652 · LAKEWOOD

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KOKO DRAINS

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License #1058527 · SOUTH PASADENA

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KOLB PLUMBING

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License #722034 · RANCHO PALOS VERDES

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KOLO PLUMBING

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License #1131319 · ORANGEVALE

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KOLPACK WES PLUMBING

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License #1038625 · SONORA

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KOLPIN KARL CONSTRUCTION

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License #776518 · WOODLAND HILLS

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KOLTS PLUMBING

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License #1022348 · ENCINITAS

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KONAKIS PLUMBING

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License #1137035 · MURRIETA

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KONCZAK PLUMBING

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License #953492 · SANTEE

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KONG'S PLUMBING AND CONSTRUCTION CO

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License #671225 · MILLBRAE

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KOOIMAN BRYAN CONSTRUCTION

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License #910194 · MISSION VIEJO

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KOOLCO MECHANICAL INC

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License #555151 · OXNARD

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KOR-US

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License #543438 · CERRITOS

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KORE CONSTRUCTION

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License #1080983 · ANAHEIM

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KORFF MURRAY N

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License #1063613 · GRANADA HILLS

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KORIN CRAIG CONSTRUCTION AND PLUMBING INC

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License #1021609 · VAN NUYS

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KORKIS PLUMBING INC

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License #1038781 · LAKEWOOD

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KORSGADEN PLUMBING

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License #1049818 · VISALIA

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KOSTA PLUMBING

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License #1047367 · POWAY

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KOURI GRAYDON PLUMBING HEATING AIR CONDITIONING

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License #638681 · FAIRFIELD

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KOUSTIK CLIFF

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License #896255 · COSTA MESA

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KOZY HOMES

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License #262090 · PETALUMA

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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.