| Caldera Roofing | Hector Manuel Caldera | — | (209) 609 8481 | Other roofers | Manteca · San Joaquin County | — | — |
| Cali Fire Protection | Cali Fire Protection | — | (925) 588 8606 | Other | Lathrop · San Joaquin County | — | — |
| Calidad Services INC | Luis Santos Gutierrez | enquiries@calidad-services.com | (209) 607 0108 | Other | Stockton · San Joaquin County | — | — |
| California Backflow | Jossue Alberto Mejia | — | (209) 298 0077 | Other | Stockton · San Joaquin County | — | — |
| California Builders | California Builders | — | (209) 663 2205 | GC, remodel, ADU | Acampo · San Joaquin County | — | — |
| California Built - In Systems INC | Kenneth Wayne Fogg | — | (209) 239 1413 | Other | Manteca · San Joaquin County | — | — |
| California Construction Consultation & Coordination INC | George Mitchell Hinman | — | (209) 834 8000 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| California Custom Tile | California Custom Tile | — | (209) 594 1851 | Other | Stockton · San Joaquin County | — | — |
| California Drywall Experts | California Drywall Experts | — | (209) 403 5000 | Other | Lodi · San Joaquin County | — | — |
| California Framing | David Alan Dabney | — | (209) 401 8785 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| California Greens | California Greens | — | (925) 209 4938 | Windows, patio, painters | Manteca · San Joaquin County | — | — |
| California Heating & Cooling | California Heating & Cooling | — | (408) 509 8619 | HVAC | Manteca · San Joaquin County | — | — |
| California Kitchens Plus | California Kitchens Plus | — | (209) 499 3189 | GC, remodel, ADU | Escalon · San Joaquin County | — | — |
| California Landscape Services INC | James Anthony Rogers | — | (209) 825 4305 | Windows, patio, painters | Manteca · San Joaquin County | — | — |
| California Metal Fabricators | California Metal Fabricators | — | (209) 747 2160 | Other | Lodi · San Joaquin County | — | — |
| California Plumbing | California Plumbing | — | (510) 856 7043 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| California Property Renovations | California Property Renovations | — | (209) 679 3922 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| California Restoration Company | Carlos Israel Ruiz | — | (800) 455 3008 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| California Roofing | Frank James Munroe | — | (209) 836 4722 | Other roofers | Tracy · San Joaquin County | — | — |
| California Stair Design | California Stair Design | — | (209) 747 0456 | Other | Lodi · San Joaquin County | — | — |
| California Tile & Grout Repair INC | Adan Daniel Rebolledo | — | (209) 210 7781 | Other | Woodbridge · San Joaquin County | — | — |
| Calizac Countertops Specialty INC | Ana Laura Castro | — | (510) 755 8822 | Other | Tracy · San Joaquin County | — | — |
| Call & Save Plumbing | Call & Save Plumbing | — | (209) 271 0931 | Other | Stockton · San Joaquin County | — | — |
| Calpacific Power INC | Mohammad Amiri | — | (916) 267 1850 | Electricians | Lathrop · San Joaquin County | — | — |
| Cam Gauna INC DBA C A M Construction | Cirilo Rafael Gauna | — | (209) 321 4527 | GC, remodel, ADU | Woodbridge · San Joaquin County | — | — |
| Camacho's Painting INC | Lozano Bernardino Camacho | — | (650) 281 7023 | Windows, patio, painters | Tracy · San Joaquin County | — | — |
| Camila Griggs | Camila Griggs | — | (209) 471 2198 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Camolinga Painting Services | Camolinga Maldonado Abel | — | (408) 637 9775 | Windows, patio, painters | Tracy · San Joaquin County | — | — |
| Campbell & Campbell Construction Consultant LLC | Tony Fitzgerald Campbell | — | (510) 561 7229 | GC, remodel, ADU | French Camp · San Joaquin County | — | — |
| Campbell & Sons | Campbell & Sons | campbellsons@outlook.com | (209) 834 1594 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Campbell Construction | Jimmy Roy Campbell | — | (209) 484 2790 | GC, remodel, ADU | Ripon · San Joaquin County | — | — |
| Campbell Family Electric INC | Temple Pat Campbell | — | (209) 814 3874 | Electricians | Tracy · San Joaquin County | — | — |
| Campigli Construction And Plumbing | Michael Frederick Campigli | — | (209) 609 5007 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Campos Construction Family Corporation | Jose G Campos Cazares | — | (209) 242 1247 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Canachi Construction INC | Daniel Velasquez | — | (209) 888 9794 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Candelaria Unique Fence Works | Candelaria Unique Fence Works | — | (209) 679 2400 | Other | Manteca · San Joaquin County | — | — |
| Canela Drywall LLC | Canela Ceja Rodolfo | info@canela-drywall.com | (209) 594 2987 | Other | Stockton · San Joaquin County | — | — |
| Cannistraci Development INC | Danny Keith Cannistraci | — | (209) 351 2629 | GC, remodel, ADU | Acampo · San Joaquin County | — | — |
| Cannistraci Landscape Design Incorporated | Danny Keith Cannistraci | — | (209) 931 5263 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Cantu's Fabrication & Welding Services | Carlos Alberto Cantu | — | (209) 688 5653 | Other | Manteca · San Joaquin County | — | — |