Home / California / Diamond Bar

Contractor license records in Diamond Bar, CA

312 records with Diamond Bar 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 Diamond Bar

General Building (180) · Electrical (46) · Warm-Air Heating, Ventilating and Air-Conditioning (35) · Plumbing (27) · General Engineering (14) · Painting and Decorating (12) · Low Voltage Systems (10) · Landscaping (9) · Ceramic and Mosaic Tile (8) · Flooring and Floor Covering (6) · Roofing (5) · Fire Protection (5) · Refrigeration (4) · Cabinet, Millwork and Finish Carpentry (4) · Concrete (3) · Hazardous Substance Removal Certification (3) · Concrete-Related Services (3) · Insulation and Acoustical (3) · Glazing (3) · Sign (2) · Elevator (2) · Water Conditioning (2) · Earthwork and Paving (2) · Drywall (2) · Sanitation System (2) · Pool and Spa Maintenance (2) · Tree Service (1) · Solar (1) · Masonry (1) · Synthetic Products (1) · Swimming Pool (1) · Structural Steel (1) · Doors, Gates and Activating Devices (1) · Asbestos Certification (1) · Building Moving/Demolition (1) · Ornamental Metal (1) · Well Drilling (1) · Boiler, Hot-Water Heating and Steam Fitting (1) · Residential Remodeling (1) · Prefabricated Equipment (1)

• CONSMA INC CLEAR
  License 951561 · expires April 30, 2028
• CT & T CONCRETE PAVING INC CLEAR
  License 875627 · expires April 30, 2028
• D A S BUILDER INC CLEAR
  License 1044031 · expires July 31, 2027
• D C M REMODEL SPECIALTIES DBA DOUGLAS CHARLES MALO CONSTRUCTION CLEAR
  License 972557 · expires May 31, 2028
• D D Y IMPROVEMENT CORP CLEAR
  License 925637 · expires December 31, 2026
• D R O - WEST CONSTRUCTION CLEAR
  License 754069 · expires September 30, 2028
• DANIEL C PUN CLEAR
  License 866867 · expires November 30, 2027
• DANNYS INSTALLATION OF APPLIANCES CLEAR
  License 984698 · expires June 30, 2027
• DATANG BUILDING SERVICE INC CLEAR
  License 1103658 · expires April 30, 2027
• DAVID LIANG HUA PEH CLEAR
  License 882040 · expires August 31, 2028
• DAYONE CONSTRUCTION CLEAR
  License 1157614 · expires July 31, 2028
• DCLOUD HOMES CLEAR
  License 1106436 · expires August 31, 2027
• DEREK SIM CLEAR
  License 977202 · expires September 30, 2028
• DEVIN ELECTRIC CLEAR
  License 878672 · expires June 30, 2028
• DIAMOND ELEVATOR SERVICES CLEAR
  License 1021983 · expires December 31, 2026
• DIAMOND SPRINGS POOLS Contr Bond Susp
  License 1102367 · expires March 31, 2027
• DK AIR & REFRIGERATION CLEAR
  License 1123000 · expires June 30, 2028
• DOLORES K MARTIN CLEAR
  License 430320 · expires October 31, 2028
• DONGLIANGLU CLEAR
  License 1145119 · expires October 31, 2027
• DONGQIANG LU CLEAR
  License 1139854 · expires July 31, 2027
• DREAM SPACE CONSTRUCTION CLEAR
  License 1071725 · expires December 31, 2026
• DREAMER CONSTRUCTION AND DEVELOPMENT CLEAR
  License 1125664 · expires August 31, 2028
• DUKE BUILDERS CORP CLEAR
  License 635180 · expires January 31, 2028
• DUX TECHNOLOGY CONSULTING INC CLEAR
  License 1050592 · expires February 28, 2027
• DYCONN INC CLEAR
  License 1093822 · expires July 31, 2028
• DYNAMIC SOLAR CLEAR
  License 1006299 · expires August 31, 2027
• DZ PRIME CONSTRUCTION CLEAR
  License 1129072 · expires November 30, 2028
• EAST COUNTY FENCE CO. Contr Bond Susp
  License 948498 · expires June 30, 2028
• ECHO DEVELOPMENT INC CLEAR
  License 993395 · expires June 30, 2028
• ECP CONSTRUCTION CLEAR
  License 1150062 · expires February 29, 2028
• EDESH ENTERPRISE INC DBA EDESH CONSTRUCTION CLEAR
  License 1020843 · expires November 30, 2026
• EDWARD CARUSO ELECTRIC Work Comp Susp
  License 529763 · expires May 31, 2028
• ELECTECH CLEAR
  License 982409 · expires April 30, 2027
• ELITE PIPE P CLEAR
  License 1144688 · expires October 31, 2027
• ENERVISION ELECTRIC POWER LLC Liab Ins Susp
  License 1144854 · expires October 31, 2027
• EVERCRAFT CONSTRUCTION INC CLEAR
  License 1122597 · expires June 30, 2028
• EXPEDITE PLUMBING CLEAR
  License 939646 · expires October 31, 2027
• F S CONSTRUCTION CLEAR
  License 928966 · expires January 31, 2028
• FALKON CONSTRUCTION INC CLEAR
  License 911791 · expires March 31, 2028
• FANGZHOU CHEN CONSTRUCTION CLEAR
  License 1040290 · expires June 30, 2028
• FILL GOOD LANDSCAPING CLEAR
  License 1053396 · expires May 31, 2027
• FOREST & SUN ARBORIST DESIGNERS LANDSCAPERS CLEAR
  License 893193 · expires March 31, 2027
• FOUR SEASONS AIR CONDITIONING AND HEATING CLEAR
  License 966880 · expires October 31, 2027
• FREDDIE VEGA CLEAR
  License 1138185 · expires May 31, 2027
• FUELTEC INC CLEAR
  License 1011678 · expires March 31, 2028
• G A N SIGNS & GRAPHIC INC CLEAR
  License 1008442 · expires October 31, 2027
• G C PLUMBING CLEAR
  License 681446 · expires December 31, 2027
• G L CONSTRUCTION GROUP INC CLEAR
  License 994049 · expires June 30, 2028
• G MILLER DEVELOPMENT CO CLEAR
  License 325200 · expires December 31, 2027
• G N Y INC Work Comp Susp
  License 1033410 · expires November 30, 2027

Page 2 of 7 · ← Previous · Next →