| Carrito Painting | Martin Jr Pena | — | (760) 524 7736 | Windows, patio, painters | Victorville · San Bernardino County | — | — |
| Carroll Electric | Joseph Edward Carroll | info@carroll-electric.com | (760) 578 9822 | Electricians | Morongo Valley · San Bernardino County | — | — |
| Carroll Installations INC | Samuel Stacy Carroll | — | (909) 987 3484 | Other | Alta Loma · San Bernardino County | — | — |
| Carroll's Air Services Heating And AC | Joseph Ronald Carroll | — | (840) 239 3294 | HVAC | Fontana · San Bernardino County | — | — |
| Carson Painting | Carson Painting | — | (909) 809 4480 | Windows, patio, painters | Rialto · San Bernardino County | — | — |
| Carter Air | Carter Air | kbabb@carter-air.com | (803) 784 9003 | HVAC | Morongo Valley · San Bernardino County | — | — |
| Carter's Garage Door | Carter's Garage Door | — | (760) 553 6909 | Other | Apple Valley · San Bernardino County | — | — |
| Carters J Woodfloors | Carters J Woodfloors | — | (909) 367 9346 | Other | Alta Loma · San Bernardino County | — | — |
| Casa Buena Investments DBA Casa Buena Construction | Ramiro Carlos Alvarez | — | (909) 295 5454 | GC, remodel, ADU | Chino · San Bernardino County | — | — |
| Casa Verde 1993 Construction Landscape Maintenance And Design INC | Giuseppe Fusco | — | (909) 224 7386 | GC, remodel, ADU | Upland · San Bernardino County | — | — |
| Casama Builder Corp | Miguel Angel Jr Castillo | — | (630) 808 0395 | GC, remodel, ADU | Rialto · San Bernardino County | — | — |
| Casanova Construction | Abel Jose Casanova | — | (626) 636 0374 | GC, remodel, ADU | Victorville · San Bernardino County | — | — |
| Casanueva Remodeling & Design LLC | Maria Guadalupe Tapia Balderas | — | (626) 701 6283 | GC, remodel, ADU | Rialto · San Bernardino County | — | — |
| Casavi | Carolina Elizabeth Del Valle | — | (323) 552 8154 | GC, remodel, ADU | San Bernardino · San Bernardino County | — | — |
| Casbe Construction | Castro Sergio | — | (909) 992 6171 | GC, remodel, ADU | Fontana · San Bernardino County | — | — |
| Casco Coast To Coast Construction INC | Casco Alexis | — | (562) 921 4567 | GC, remodel, ADU | Chino Hills · San Bernardino County | — | — |
| Casco Construction INC | Perez Ramiro Ramirez | — | (909) 256 1792 | GC, remodel, ADU | Colton · San Bernardino County | — | — |
| Caseworx INC | Gregg John Schneider | — | (909) 799 8550 | Other | Redlands · San Bernardino County | — | — |
| Casey Co General Contractor | Brian Evan Casey | — | (909) 790 9705 | GC, remodel, ADU | Redlands · San Bernardino County | — | — |
| Casey Construction | Matthew Bryan Casey | — | (626) 255 1847 | GC, remodel, ADU | Chino Hills · San Bernardino County | — | — |
| Casey Construction | Patrick Richard Casey | — | (909) 792 7965 | GC, remodel, ADU | Redlands · San Bernardino County | — | — |
| Casey Construction Company | Christopher Carl Casey | — | (760) 240 3045 | Electricians | Apple Valley · San Bernardino County | — | — |
| Cash Grading Contractors INC | Timothy Jay Cash | — | (909) 983 8380 | Other | Ontario · San Bernardino County | — | — |
| Caskey Construction | Christopher Roy Caskey | — | (951) 398 8370 | Other | Yucaipa · San Bernardino County | — | — |
| Cassini Construction | Jose Miguel Macias | info@cassiniconstruction.com | (909) 644 0138 | GC, remodel, ADU | Rialto · San Bernardino County | — | — |
| Cast Construction | Melvin Eugene Cast | — | (618) 344-7073 | GC, remodel, ADU | Victorville · San Bernardino County | — | — |
| Castaneda Concrete Services | Luis Fernando Castaneda | — | (760) 508 2509 | Other | Victorville · San Bernardino County | — | — |
| Castaneda Construction | Castaneda Trejo Ricardo | — | (760) 969 3456 | GC, remodel, ADU | Yucca Valley · San Bernardino County | — | — |
| Castaneda Hardscape And Tree Pros | Santiago Giovanni Banuelos Nunez | — | (626) 298 2215 | Windows, patio, painters | Upland · San Bernardino County | — | — |
| Castaway Pools & Construction INC | Michael Melcon Nishanian | — | (909) 989 1455 | GC, remodel, ADU | Rancho Cucamonga · San Bernardino County | — | — |
| Castell's Construction INC | Joseph Merl Mc Knight | — | (760) 780 5719 | GC, remodel, ADU | Redlands · San Bernardino County | — | — |
| Castellon Construction | Castellon Erick | wilfredocastellon@live.com | (909) 567 1795 | GC, remodel, ADU | San Bernardino · San Bernardino County | — | — |
| Castillo's Professional Flooring Services LLC | Pedro Felipe Castillo | — | (323) 287 1769 | Other | Phelan · San Bernardino County | — | — |
| Castillon Flooring Contractor | Castillon Flooring Contractor | — | (206) 451 0533 | Other | Ontario · San Bernardino County | — | — |
| Castillos Construction Services INC | Alfredo Javier Mora | — | (909) 357 3993 | GC, remodel, ADU | Bloomington · San Bernardino County | — | — |
| Castle Bilt Construction | Austin Michael Jones | — | (760) 559 9655 | GC, remodel, ADU | Apple Valley · San Bernardino County | — | — |
| Castle Construction And Development INC | Alejandro Castellon | — | (909) 373 7214 | GC, remodel, ADU | Ontario · San Bernardino County | — | — |
| Castle Contractor | Castle Contractor | — | (951) 303 6208 | Electricians | Ontario · San Bernardino County | — | — |
| Caston INC | James Isadore Jr Malachowski | firstname@caston.com | (909) 381 1619 | GC, remodel, ADU | San Bernardino · San Bernardino County | — | — |
| Catalan Rebar Placer | Catalan Rebar Placer | — | (909) 485 5714 | Other | Fontana · San Bernardino County | — | — |