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Contractor license records in Ontario, CA

918 records with Ontario as their locality of record in CSLB's records, as of November 3, 2026. Statuses print as the board records them; a record listed as suspended is not a current credential.

Source: California Contractors State License Board (CSLB) — records as of November 3, 2026. Records change; the board’s own CSLB License Check is the current source.

By classification in Ontario

General Building (338) · Electrical (137) · General Engineering (61) · Warm-Air Heating, Ventilating and Air-Conditioning (51) · Painting and Decorating (50) · Plumbing (49) · Low Voltage Systems (36) · Landscaping (34) · Concrete (32) · Flooring and Floor Covering (32) · Roofing (26) · Cabinet, Millwork and Finish Carpentry (22) · Doors, Gates and Activating Devices (22) · Glazing (21) · Drywall (20) · Ceramic and Mosaic Tile (18) · Synthetic Products (17) · Swimming Pool (16) · Masonry (16) · Structural Steel (13) · Fire Protection (12) · Refrigeration (12) · Building Moving/Demolition (12) · Pool and Spa Maintenance (11) · Window Coverings (9) · Sanitation System (9) · Prefabricated Equipment (9) · Lathing and Plastering (9) · Earthwork and Paving (8) · Metal Products (8) · Parking and Highway Improvement (7) · Sign (7) · Reinforcing Steel (7) · Machinery and Pumps (7) · Concrete-Related Services (7) · Hazardous Substance Removal Certification (6) · Ornamental Metal (6) · Fencing (5) · Service Station Equipment and Maintenance (5) · Sheet Metal (5) · Welding (5) · Framing and Rough Carpentry (4) · Construction Cleanup (4) · Tree Service (4) · Residential Remodeling (4) · Non-Electrical Sign Installation (3) · Solar (3) · Non-specialized (3) · Asbestos Certification (3) · Asbestos Abatement (3) · Tree and Palm (3) · Paperhanging (2) · Awnings (2) · Construction Zone Traffic Control (2) · Boiler, Hot-Water Heating and Steam Fitting (2) · Pipeline (2) · Insulation and Acoustical (2) · General Manufactured Housing (1) · Suspended Ceilings (1) · Well Drilling (1) · Lock and Security Equipment (1) · Hardware, Locks and Safes (1) · Safes and Vaults (1) · Siding and Decking (1) · Scaffolding (1)

• STONE AGE MASON CLEAR
  License 919942 · expires July 31, 2028
• STONE CREATIONS INCORPORATED CLEAR
  License 494256 · expires June 30, 2028
• STRONG BASE CONCRETE CONSTRUCTION CLEAR
  License 1147044 · expires December 31, 2027
• STRUCT-TECH BUILDERS CLEAR
  License 568920 · expires September 30, 2028
• STS PLUMBING & ROOTER INC CLEAR
  License 1140510 · expires July 31, 2027
• SUN MICROGRID SOLAR INC CLEAR
  License 1157320 · expires June 30, 2028
• SUNPRIDE CONSTRUCTION INC CLEAR
  License 1162476 · expires October 31, 2028
• SUNWEST BUILDERS TENANT IMPROVEMENTS INC CLEAR
  License 1009363 · expires December 31, 2027
• SUPER MARIO CONSTRUCTION CLEAR
  License 958569 · expires August 31, 2028
• SUPERHEAT REFRIGERATION CLEAR
  License 1147315 · expires December 31, 2027
• SUPERIOR POST TENSION REPAIRS CLEAR
  License 1154875 · expires May 31, 2028
• SUTAS HANGTHAISONG CLEAR
  License 887657 · expires November 30, 2026
• SWAN PAINTING CLEAR
  License 476019 · expires July 31, 2027
• SWEET WATER LANDSCAPING CLEAR
  License 817917 · expires April 30, 2027
• T & K CONSTRUCTION CLEAR
  License 765169 · expires June 30, 2027
• T K SYSTEMS INC DBA A M F I CLEAR
  License 800845 · expires November 30, 2027
• TAPIA ROOFING CLEAR
  License 1149023 · expires January 31, 2028
• TECHNICAL POOL REPAIR CLEAR
  License 868779 · expires December 31, 2027
• TECHNICOOL REFRIGERATION CLEAR
  License 987769 · expires July 31, 2028
• TELECOMP ENTERPRISES INC CLEAR
  License 766536 · expires July 31, 2027
• TELETEKS INC CLEAR
  License 1060559 · expires November 30, 2027
• TERRAL DUNN CLEAR
  License 378323 · expires July 31, 2027
• TFR COMMUNICATIONS INC CLEAR
  License 1110215 · expires September 30, 2027
• THACKER'S ENGINEERING CLEAR
  License 1141853 · expires August 31, 2027
• THE AMGRAPH GROUP CLEAR
  License 988430 · expires November 30, 2027
• THE BRUSH WHISPERER CUSTOM DECORATIVE PAINTING CLEAR
  License 1090901 · expires April 30, 2028
• THE CLIMATE CONTROLLERS A PARTNERSHIP CLEAR
  License 953750 · expires October 31, 2028
• THE EAST LOS ANGELES COMMUNITY UNION CLEAR
  License 622252 · expires June 30, 2027
• THE GOAT ROOFING LLC CLEAR
  License 1158821 · expires July 31, 2028
• THE MASONRY COMPANY CLEAR
  License 879574 · expires June 30, 2028
• THE MC INTYRE COMPANY A CALIF PARTNERSHIP CLEAR
  License 590332 · expires March 31, 2028
• THE PAVING PROS CLEAR
  License 1146478 · expires November 30, 2027
• THE SPECIALIST PLUMBING CLEAR
  License 915935 · expires May 31, 2028
• THOMAS ANDERSON WALLCOVERING INC CLEAR
  License 336082 · expires October 31, 2028
• THOMAS MCGEE DEVELOPMENT INC CLEAR
  License 1117295 · expires February 29, 2028
• THOR MC ANDREW CONSTRUCTION CLEAR
  License 742776 · expires June 30, 2028
• TIMOTHY F HERWEHE CLEAR
  License 576432 · expires August 31, 2027
• TIMOTHY S MATLACK CLEAR
  License 958791 · expires March 31, 2027
• TITAN DEMOLITION INC Judgement Susp
  License 1029307 · expires July 31, 2027
• TOM ARRIOLA FLOORING CLEAR
  License 747719 · expires April 30, 2028
• TOM FOLEY INSTALLATIONS INCORPORATED CLEAR
  License 914990 · expires June 30, 2028
• TOM'S CONCRETE INC CLEAR
  License 996477 · expires September 30, 2028
• TOP OF THE LINE ROOFING CLEAR
  License 810795 · expires July 31, 2028
• TOP RANK COMMUNICATIONS INC CLEAR
  License 934552 · expires July 31, 2028
• TOTAL INTERIOR DEMOLITION CLEAR
  License 1159184 · expires August 31, 2028
• TR CONSTRUCTIONS LLC CLEAR
  License 926469 · expires February 29, 2028
• TRAIT CONSTRUCTION CLEAR
  License 1028664 · expires July 31, 2027
• TRIDON 2 CONTRACTORS CLEAR
  License 1129917 · expires December 31, 2026
• TRINIDAD ELECTRICAL CONTRACTORS CLEAR
  License 1150363 · expires February 29, 2028
• TRINITY COATINGS & HWY MAINTENANCE CLEAR
  License 653080 · expires August 31, 2028

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