Licensed General Engineering (A) contractors in California

The California Contractors State License Board (CSLB) lists 15,260 California contractors classified A (General Engineering (A)). Each entry below links to a full dossier with license status, insurance, bond, and enforcement — as of July 8, 2026.

Showing 10,741–10,800 of 15,260 contractors

Quality Concrete
Chester, CA · CSLB #748526 · as of July 8, 2026
Active · clear
Quality Construction & Engineering INC
San Diego, CA · CSLB #1005282 · as of July 8, 2026
Active · clear
Quality General Engineering INC
Spring Valley, CA · CSLB #838699 · as of July 8, 2026
Active · clear
Quality Incorporated Site Work & Underground
Napa, CA · CSLB #622688 · as of July 8, 2026
Active · clear
Quality Jet Rooter INC
Whittier, CA · CSLB #888893 · as of July 8, 2026
Active · clear
Quality Petroleum Services INC
Northridge, CA · CSLB #966759 · as of July 8, 2026
Active · clear
Quality Plumbing
Apple Valley, CA · CSLB #508834 · as of July 8, 2026
Active · clear
Quality Service
Escalon, CA · CSLB #834488 · as of July 8, 2026
Active · clear
Qualitystruct Construction INC
Sylmar, CA · CSLB #1013844 · as of July 8, 2026
Active · clear
Quality Surfacing INC
Red Bluff, CA · CSLB #651507 · as of July 8, 2026
Active · clear
Quality Tank And Construction CO
Sandy, CA · CSLB #696313 · as of July 8, 2026
Active · clear
Qualus LLC
Lake Mary, CA · CSLB #1092252 · as of July 8, 2026
Active · clear
Quam General Engineering INC
Woodland, CA · CSLB #988662 · as of July 8, 2026
Active · clear
Quanta Energy Services LLC
Benicia, CA · CSLB #1007213 · as of July 8, 2026
Active · clear
Quanta Infrastructure Solutions Group LLC
Overland Park, CA · CSLB #1079968 · as of July 8, 2026
Active · clear
Quanta Telecommunication Solutions LLC
Spring, CA · CSLB #1020653 · as of July 8, 2026
Active · clear
LCS Electrical And Industrial Services INC DBA Quantum Industries
Bakersfield, CA · CSLB #1021958 · as of July 8, 2026
Active · clear
Quartz Engineering And Development
Penn Valley, CA · CSLB #1102083 · as of July 8, 2026
Active · clear
Patrick Queen Construction
Petrolia, CA · CSLB #897212 · as of July 8, 2026
Active · clear
Questa Engineering Corporation
Point Richmond, CA · CSLB #948253 · as of July 8, 2026
Active · clear
Quiggle Construction
Penn Valley, CA · CSLB #622831 · as of July 8, 2026
Active · clear
Quimu Contracting INC
Dixon, CA · CSLB #809085 · as of July 8, 2026
Active · clear
Quincon INC
Grover Beach, CA · CSLB #888545 · as of July 8, 2026
Active · clear
R2B Engineering
Laguna Hills, CA · CSLB #1031564 · as of July 8, 2026
Active · clear
R-2 Utility Contractors
Prineville, CA · CSLB #1055485 · as of July 8, 2026
Active · clear
R-3 Contractors INC
Anaheim, CA · CSLB #630433 · as of July 8, 2026
Active · clear
R4 Electrical Construction INC
Menifee, CA · CSLB #782019 · as of July 8, 2026
Active · clear
R5 Group INC
Modesto, CA · CSLB #1028515 · as of July 8, 2026
Active · clear
Ra3 Engineering
El Centro, CA · CSLB #1069287 · as of July 8, 2026
Active · clear
R & A Associates Newport Beach INC
Newport Beach, CA · CSLB #641444 · as of July 8, 2026
Active · clear
Rabc - Ecc A Joint Venture
Lakeside, CA · CSLB #986034 · as of July 8, 2026
Active · clear
Rab Construction & Landscape INC
San Marcos, CA · CSLB #939289 · as of July 8, 2026
Active · clear
Rabello Electric INC
Glendale, CA · CSLB #763861 · as of July 8, 2026
Active · clear
Rac Construction & Engineering INC
San Diego, CA · CSLB #1073141 · as of July 8, 2026
Active · clear
Cliff Rackham Construction
Pollock Pines, CA · CSLB #599175 · as of July 8, 2026
Active · clear
S Rackham Construction
Auburn, CA · CSLB #596192 · as of July 8, 2026
Active · clear
S Rackham Construction INC
Auburn, CA · CSLB #998900 · as of July 8, 2026
Active · clear
Ra Concrete & Engineering INC DBA Ra Concrete
Chula Vista, CA · CSLB #931273 · as of July 8, 2026
Active · clear
Radco & Associates INC
San Rafael, CA · CSLB #410936 · as of July 8, 2026
Active · clear
Radco Construction
Soquel, CA · CSLB #789918 · as of July 8, 2026
Active · clear
Radco Construction
Carson City, CA · CSLB #820978 · as of July 8, 2026
Active · clear
Radco INC
Brawley, CA · CSLB #859138 · as of July 8, 2026
Active · clear
Rad Communications INC
Ferndale, CA · CSLB #1054707 · as of July 8, 2026
Active · clear
Radcon INC
Lakeport, CA · CSLB #997005 · as of July 8, 2026
Active · clear
Rad Construction Management INC
Fresno, CA · CSLB #1143909 · as of July 8, 2026
Active · clear
Rader Excavating INC
Palo Cedro, CA · CSLB #891588 · as of July 8, 2026
Active · clear
Radiant Communications
Simi Valley, CA · CSLB #1034277 · as of July 8, 2026
Active · clear
Radius Construction
San Lorenzo, CA · CSLB #1139428 · as of July 8, 2026
Active · clear
Radius Earthwork INC
Campbell, CA · CSLB #1059010 · as of July 8, 2026
Active · clear
Radius Energy
Pauma Valley, CA · CSLB #935382 · as of July 8, 2026
Active · clear
Radman Electric
Hayward, CA · CSLB #1021116 · as of July 8, 2026
Active · clear
Steve P Rados INC
Santa Ana, CA · CSLB #484452 · as of July 8, 2026
Active · clear
Rafa Construction INC
Beverly Hills, CA · CSLB #1090389 · as of July 8, 2026
Active · clear
Rafael And Sons Construction INC
Petaluma, CA · CSLB #1151585 · as of July 8, 2026
Active · clear
Rafael Construction INC
Las Vegas, CA · CSLB #831843 · as of July 8, 2026
Active · clear
Raffin Construction CO INC
Millbrae, CA · CSLB #522334 · as of July 8, 2026
Active · clear
John Ragan Construction
Tahoe City, CA · CSLB #812167 · as of July 8, 2026
Active · clear
Luke Ragan Construction
Tahoe City, CA · CSLB #812166 · as of July 8, 2026
Active · clear
Mark Ragan Construction
Tahoe City, CA · CSLB #812165 · as of July 8, 2026
Active · clear
Ragnar Benson LLC
Rockford, CA · CSLB #1057074 · as of July 8, 2026
Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of July 8, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.