C-4

Boiler, Hot Water & Steam Contractor Verification - Page 13

710 boiler, hot water & steam contractors checked against 6 data sources (Page 13 of 15)

About C-4 License

Boiler, hot water heating, and steam fitting contractors.

710

Total Contractors

695

Active Licenses

97

Federal Records

Verify a Boiler, Hot Water & Steam Contractor

Boiler, Hot Water & Steam Contractors

Showing contractors 601-650 of 710

SAN JOSE BOILER WORKS INC

Clear

License #307847 · SAN JOSE

Active

SAND JOSEPH C CO INC

Clear

License #280333 · SAN FRANCISCO

Active

SANTA BARBARA BOILER SERVICE

Clear

License #1114230 · SANTA BARBARA

Active

SANTA CRUZ SOLAR AND SOLAR ELECTRIC

Clear

License #464505 · APTOS

Active

SAVAGE & SON INC

Clear

License #37844 · RENO

Active

SCHECK MECHANICAL CORP

Clear

License #975785 · WILLOWBROOK

Active

SCHEFER RADIANT

Clear

License #877442 · SANTA ROSA

Active

SCHMETZER LOUIE CO

Clear

License #177394 · SANTA ANA

Work Comp Susp

SEASIDE HEATING & AIR CONDITIONING INC

Clear

License #790514 · OCEANSIDE

Active

SEDANO BUILDERS INC

Clear

License #1070321 · LA PUENTE

Active

SELECT BUILDING SERVICES

Clear

License #85895 · STOCKTON

Active

SENA PLUMBING INC

Clear

License #1075331 · SANTA MARIA

Active

SEQUOIA SHEET METAL

Clear

License #1056909 · SANGER

Active

SHAMBAUGH & SON L P

Clear

License #998265 · FORT WAYNE

Active

SHASTA QUALITY

Clear

License #570795 · REDDING

Active

SHMIDT YURY

Clear

License #365730 · LOS ANGELES

Active

SIERRA BOILER SERVICE INC

Clear

License #1099176 · SPARKS

Active

SIERRA COMMERCIAL PLUMBING INC

Clear

License #710326 · SIMI VALLEY

Active

SIMMS PLUMBING AND WATER EQUIPMENT INC

Clear

License #725194 · PESCADERO

Active

SKAATES CANEPA INC

Clear

License #535236 · BURLINGAME

Active

SMITH JIMMY

Clear

License #777005 · SANTA CRUZ

Active

SO CAL BOILER SERVICES

Clear

License #1061301 · POWAY

Active

SOL HYDRONICS

Clear

License #536318 · CARMEL

Active

SOS HEATING AND AIR

Clear

License #1036171 · WEST HOLLYWOOD

Active

SOUTH COAST FACILITY SERVICES

Clear

License #857144 · ANAHEIM

Active

SOUTHERN CALIFORNIA FIRE PROTECTION

Clear

License #979288 · PLACENTIA

Active

SOUTHLAND INDUSTRIES

Clear

License #114040 · GARDEN GROVE

Active

SOUTHLAND MECHANICAL SERVICES

Clear

License #961701 · SPARKS

Active

SOUTHWEST MECHANICAL INC

Clear

License #761417 · COVINA

Active

SPAULDING MECHANICAL

Clear

License #643073 · EUREKA

Active

SPEC CONSTRUCTION CO INC

Clear

License #419626 · ONTARIO

Active

SPECIALIZED TRADES

Clear

License #743822 · OAKDALE

Active

SPIRA-LOC

Clear

License #583829 · EL CAJON

Active

STEAM AND HOT WATER COMPANY THE

Clear

License #1123889 · SAN FRANCISCO

Active

STEAM BOILER SOLUTIONS

Clear

License #1084529 · GARDEN GROVE

Active

STEAM EQUIPMENT CO

Clear

License #701956 · LOS ANGELES

Active

STEAM GENERATION CORPORATION

Clear

License #920235 · MESA

Active

STEAM TECH

Clear

License #1040448 · WHITTIER

Active

STEINKE ADVANCED MECHANICAL SYSTEMS INC

Clear

License #938783 · SAN JOSE

Active

STEPHENS CONSTRUCTION INC

Clear

License #522540 · ARNOLD

Active

STONEGATE MECHANICAL

Clear

License #1085129 · CHULA VISTA

Active

SULLIVAN KEVIN & ASSOCIATES INC

Clear

License #887975 · PACHECO

Active

SUMMIT PLUMBING AND MECHANICAL CORPORATION

Clear

License #861170 · MODESTO

Active

SUN POWER CONSTRUCTION INC

Clear

License #759837 · TRUCKEE

Active

SUNZERI PETE PLUMBING

Clear

License #496417 · WATSONVILLE

Active

SUPERIOR MECHANICAL SERVICES INC

Clear

License #854680 · LIVERMORE

Active

SUTTLES PLUMBING INC

Clear

License #965356 · SIMI VALLEY

Active

SWPLUMBINC

Clear

License #1008750 · ALPINE

Active

T M MECHANICAL COMPANY INC

Clear

License #961018 · SAN FRANCISCO

Active

T T S CONSTRUCTION CORPORATION

Clear

License #838336 · LODI

Active

How to Verify a Boiler, Hot Water & Steam Contractor (C-4) in California

California requires all contractors performing boiler, hot water & steam work valued at $500+ to hold a valid CSLB C-4 license. Of the 710 licensed boiler, hot water & steam contractors in the state, 98% currently hold active licenses and 13.7% 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 Boiler, Hot Water & Steam Contractors

  • Verify the contractor license is active and in good standing
  • Request proof of insurance and bonding
  • Get at least 3 written quotes before selecting a contractor
  • Check federal databases: SAM.gov, OSHA, DOL, and EPA records
  • Confirm bond: California requires $25,000+ contractor bond (SB 607)

Why Verification Matters for Boiler, Hot Water & Steam Work

Under California's "Controlling Employer" doctrine, general contractors face liability for subcontractor safety violations. For boiler, hot water & steam work specifically, 13.7% 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.

Verify Boiler, Hot Water & Steam Contractors (C-4) - Page 13 | CSLB + Federal Check | SiteVetter