| California Dreams Concrete Services | Raul Ernesto Gutierrez | — | (909) 419 4732 | Other | Bloomington · San Bernardino County | — | — |
| California Electric Services Corp | Kenneth Alan Hill | — | (714) 853 7793 | Electricians | Rialto · San Bernardino County | — | — |
| California Electrical Works INC | John Albert Aguirre | — | (909) 393 5358 | Electricians | Chino Hills · San Bernardino County | — | — |
| California Elite Building Maintenance INC | Robert Anthony Dazalla | — | (909) 975 4440 | Other | Ontario · San Bernardino County | — | — |
| California Energy Savers INC | Robert Eric Beam | — | (909) 944 5583 | GC, remodel, ADU | Rancho Cucamonga · San Bernardino County | — | — |
| California Fabricated Glass | California Fabricated Glass | — | (909) 466 7374 | Windows, patio, painters | Rialto · San Bernardino County | — | — |
| California Generator | William Arley Burke | bill@californiagenerator.com | (909) 260 4217 | Electricians | Alta Loma · San Bernardino County | — | — |
| California Green Landscape INC | David Alor Green | — | (909) 633 5053 | Windows, patio, painters | Highland · San Bernardino County | — | — |
| California Guardian INC | William Edward Birkholz | — | (626) 945 7684 | Other | Fontana · San Bernardino County | — | — |
| California Hesperia Painting INC | Sang Jun Lee | — | (909) 996 7337 | Windows, patio, painters | Hesperia · San Bernardino County | — | — |
| California Hi - Tech Concrete Co | Douglas Barry Jacobs | — | (909) 981 5008 | Other | Upland · San Bernardino County | — | — |
| California Highway Products | Glen Brian Copeland | info@californiahighwayproducts.com | (909) 213 3788 | Other | Redlands · San Bernardino County | — | — |
| California House Works | California House Works | info@californiahouseworks.com | (909) 557 0098 | GC, remodel, ADU | Crestline · San Bernardino County | — | — |
| California Landscape & Design INC | Joseph Michael Jr Ciaglia | — | (909) 949 1601 | GC, remodel, ADU | Upland · San Bernardino County | — | — |
| California Landscape And Maintenance | California Landscape And Maintenance | — | (909) 283 9299 | Windows, patio, painters | Redlands · San Bernardino County | — | — |
| California Locksmith | California Locksmith | erika@californialocksmith.com | (760) 220 9089 | Other | Phelan · San Bernardino County | — | — |
| California Northwoods Plumbing Services | Hernan Tonatihu Aguilar Moreno | — | (909) 600 3436 | Other | Phelan · San Bernardino County | — | — |
| California Patio Covers INC | Anthony Charles Massagli | — | (909) 987 5929 | Other | Alta Loma · San Bernardino County | — | — |
| California Paving Concepts | California Paving Concepts | — | (909) 841 5771 | Other | Colton · San Bernardino County | — | — |
| California Point General Engineering Contractors INC | Martin Alberto Mendez | — | (909) 376 9492 | Other | San Bernardino · San Bernardino County | — | — |
| California Pools Of Upland | James Louis Montini | — | (909) 890 9907 | Pool | Rancho Cucamonga · San Bernardino County | — | — |
| California Precast Veneer INC | Luis Alfredo Castellanos | — | (562) 682 9820 | Other | Rialto · San Bernardino County | — | — |
| California Professional Management | Andrew Charles Galbraith | — | (909) 532 5208 | GC, remodel, ADU | Rancho Cucamonga · San Bernardino County | — | — |
| California Pumping & Sanitation INC | Miguel Omar Broce | — | (909) 890 1440 | Other | San Bernardino · San Bernardino County | — | — |
| California Rampworks | Joseph Michael Jr Ciaglia | — | (909) 949 1601 | GC, remodel, ADU | Upland · San Bernardino County | — | — |
| California Roll - Out Shelves INC | Christopher Joseph Catalano | — | (909) 730 5466 | Other | Montclair · San Bernardino County | — | — |
| California Roofing Co | Mario Humberto Gomez | — | (909) 824 6819 | Other roofers | Grand Terrace · San Bernardino County | — | — |
| California Roofing Solutions INC | Garcia Oscar Salas | — | (619) 735 6301 | Other roofers | Fontana · San Bernardino County | — | — |
| California Skateparks | Joseph Michael Jr Ciaglia | — | (909) 949 1601 | GC, remodel, ADU | Upland · San Bernardino County | — | — |
| California Skateparks | Joseph Michael Jr Ciaglia | — | (909) 949 1601 | GC, remodel, ADU | Upland · San Bernardino County | — | — |
| California Sound INC | California Sound INC | — | (909) 388-1400 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| California Specialty Insulation INC | Marc Peter Leotaud | — | (909) 464 8105 | Other | Chino · San Bernardino County | — | — |
| California Street Lighting | Abel G Munoz Aguila | — | (760) 887 7775 | Electricians | Ontario · San Bernardino County | — | — |
| California Synthetic Turf LLC | Armando Rene Palacio | — | (213) 505 8149 | Other | Chino · San Bernardino County | — | — |
| California Tile Solutions | California Tile Solutions | — | (562) 688 7465 | Other | San Bernardino · San Bernardino County | — | — |
| California Turf Management INC | Elizabeth Marie Ojinaga | — | (909) 949 9373 | Windows, patio, painters | Ontario · San Bernardino County | — | — |
| California Water And Mold Restoration LLC | Eliseo Daniel Ovando | — | (909) 270 2203 | GC, remodel, ADU | Rancho Cucamonga · San Bernardino County | — | — |
| California Water Operators LLC | Roger Alan Smith | roger@cawateroperators.com | (909) 522 8106 | Other | Yucaipa · San Bernardino County | — | — |
| California's Drywall Company | Jose Jesus Jr Ramos | — | (909) 549 6731 | GC, remodel, ADU | Fontana · San Bernardino County | — | — |
| Californiacare Restoration INC | Fei Ye | — | (909) 837 5208 | GC, remodel, ADU | Chino · San Bernardino County | — | — |