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C51

C51 Structural Steel Contractors in California - Page 6

1,642 CSLB C51 license records for California (Page 6 of 33)

CSLB C51 License Scope

Structural steel contractors for steel frame construction.

1,642

Total Contractors

1,538

Active Licenses

181

Federal Records

Run CSLB License Lookup

C51 Structural Steel Contractor License Records

Showing contractors 251-300 of 1,642

ALL AMERICAN CONSTRUCTION SOLUTIONS

Clear

License #1047163 · CHINO

Active

ALL AMERICAN IRONWORKS

Clear

License #1048280 · HELENDALE

Active

ALL AROUND STEEL INC

Clear

License #1104476 · SAN DIEGO

Contr Bond Susp

ALL METAL CONSTRUCTION

Clear

License #815556 · APTOS

Active

ALL POINTS WELDING

Clear

License #662082 · DIAMOND SPRINGS

Active

ALL TECH

Clear

License #1010535 · PASO ROBLES

Active

ALL WEST FABRICATORS INC

Clear

License #722400 · FREMONT

Active

ALLEGRO STEEL INC

Clear

License #1050282 · SANTA MONICA

Active

ALLEN IRON WORKS INC

Clear

License #565721 · MAMMOTH LAKES

Active

ALLEN STEEL

Clear

License #566721 · LIVERMORE

Active

ALLEY'S WELDING INC

Clear

License #756723 · BAKERSFIELD

Active

ALLIANCE INDUSTRIAL GROUP INC

Clear

License #845946 · RIDGEFIELD

Active

ALLIED STEEL CO INC

Clear

License #164718 · RIVERSIDE

Active

ALPHA STRUCTURAL

Clear

License #1064464 · SAN FRANCISCO

Active

ALPHABET STEEL INC

Clear

License #1108061 · PACOIMA

Active

ALPINE IRON

Clear

License #961817 · GRASS VALLEY

Active

ALPINE TAHOE BUILDERS INC

Clear

License #1111037 · VERDI

Active

ALTA DESIGN & BUILD

Clear

License #996887 · LA CANADA

Active

ALUMINUM PRODUCTS LIBERTY LAKE LLC

Clear

License #1111910 · LIBERTY LAKE

Active

ALVARADO STRUCTURAL STEEL

Clear

License #1075347 · DALY CITY

Active

AMERICAL BUILDERS AND INSPECTION SERVICES INC

Clear

License #646517 · LA VERNE

Active

AMERICAN BULL METALWORKS INC

Clear

License #998070 · PACOIMA

Active

AMERICAN CARPORTS INC

Clear

License #879371 · JOSHUA

Active

AMERICAN INDUSTRIES INC

Clear

License #1068721 · BILLING

Active

AMERICAN IRON

Clear

License #1061667 · RIDGECREST

Active

AMERICAN IRON DESIGNS CORPORATION

Clear

License #1041418 · SANTA ANA

Active

AMERICAN STEEL

Clear

License #963982 · ANAHEIM

Active

AMERICAN STEEL INC

Clear

License #866787 · BILLINGS

Active

AMERICAN STRONG FOUNDATION

Clear

License #1118425 · LOS ANGELES

Active

AMERICAN WELDING & FAB AND DOCKWORKS

Clear

License #815453 · BALDWIN PARK

Active

AMERICAN WELDING INC

Clear

License #838937 · PALMDALE

Active

AMERICON INC

Clear

License #1051331 · WATSONVILLE

Active

AMFABSTEEL INC

Clear

License #829072 · BERNALILLO

Active

AMMCO ORNAMENTAL IRON INC

Clear

License #538960 · HAWTHORNE

Active

AMO STEEL STRUCTURE

Clear

License #1077595 · SANTA FE SPRINGS

Active

AN IRON WORKS

Clear

License #1124825 · ROLLING HILLS ESTATES

Active

ANDERSON BROS ARTISTIC IRON CO

Clear

License #234910 · CORONA

Active

ANDREW THOMAS ROY

Clear

License #796310 · DANVILLE

Work Comp Susp

ANMG WELDING

Clear

License #1110115 · LANCASTER

Active

ANTHONY J BARRO III STRUCTURAL STEEL

Clear

License #1011805 · CERES

Active

ANTONIO'S METAL WORKS INC

Clear

License #1036533 · EL CAJON

Active

ANYTIME WELDING INC

Clear

License #711184 · SAN JOSE

Active

ANZA VALLEY WELDING & FABRICATION INC

Clear

License #1155282 · ANZA

Active

APEX ELECTRIC & AIR

Clear

License #825156 · SAN FRANCISCO

Active

APEX INTEGRATORS INC

Clear

License #891173 · BAKERSFIELD

Active

APEX STEEL BUILDINGS

Clear

License #1150578 · LINCOLN

Active

APEX STEEL INC

Clear

License #1051065 · CHICO

Active

APPROVED EQUAL ENTERPRISES

Clear

License #751548 · SAN BERNARDINO

Contr Bond Susp

ARB INC

Clear

License #194079 · LAKE FOREST

Active

ARCHANGEL FABRICATION STRUCTURAL STEEL SERVICE

Clear

License #1099744 · VISALIA

Active

C51 Structural Steel Contractor License Lookup

Use this page when you need a California C51 license lookup, a list of licensed structural steel contractors, or a quick screen before assigning structural steel work to a sub. Each row links to a contractor profile with CSLB status, workers' comp, bond, federal records, and permit checks.

California has 1,642 CSLB C51 license records for structural steel contractors. 94% currently hold active licenses and 11.0% have at least one federal compliance record. SiteVetter checks CSLB status, SAM.gov debarment, DOL wage violations, OSHA safety citations, EPA environmental records, and building permits in seconds.

What to Check for C51 Structural Steel 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 Federal Records Matter for Structural Steel Work

For structural steel work, 11.0% of licensed contractors have federal records that a standard CSLB license check would not reveal. SiteVetter's 6-source lookup gives GCs a faster way to compare subs before bid award, onboarding, or renewal review.

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