| C & L Quality Drywall INC | Carlos Alberto Contreras-Noyola | info@indiantypefoundry.com | (650) 703 5884 | Other | Tracy · San Joaquin County | — | — |
| C & R Fence Contractors | Chance Lee Kilgore | — | (209) 464 9457 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| C & S Home Theater | C & S Home Theater | — | (209) 747 3583 | Other | Lodi · San Joaquin County | — | — |
| C And S Floors | C And S Floors | — | (510) 693 5607 | Other | Lodi · San Joaquin County | — | — |
| C B E | C B E | — | (650) 743 3154 | Electricians | Tracy · San Joaquin County | — | — |
| C C T Telecommunications INC | William Ellsworth Koch | — | (209) 365 9500 | Electricians | Lodi · San Joaquin County | — | — |
| C D Trull Construction | Craig Douglas Jr Trull | — | (209) 365 6158 | Other | Lodi · San Joaquin County | — | — |
| C Edward Jones & Co INC | Winnie Pawnee Jones | — | (209) 334 2964 | GC, remodel, ADU | Clements · San Joaquin County | — | — |
| C G A Concrete INC | Mendoza Javier Vallejo | — | (209) 513 4328 | Other | Stockton · San Joaquin County | — | — |
| C G Electric | Curt Alphonso Gumbs | — | (209) 918 8099 | Electricians | Escalon · San Joaquin County | — | — |
| C G Metal Stud & Drywall LLC | Guerrero Carlos | — | (209) 406 5858 | Other | Lodi · San Joaquin County | — | — |
| C H Heating & Air | C H Heating & Air | — | (209) 263 2493 | HVAC | Acampo · San Joaquin County | — | — |
| C J And Me Construction INC | John Matthew Costa | — | (209) 823 8213 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| C J Katzakian Const | C J Katzakian Const | — | (209) 327 8739 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| C L T Tile | C L T Tile | — | (209) 951 0844 | Other | Stockton · San Joaquin County | — | — |
| C R Painting | C R Painting | — | (209) 278 9702 | Windows, patio, painters | Tracy · San Joaquin County | — | — |
| C T Brayton & Sons INC | Vicky Darlene Siegfried | — | (209) 838 7388 | GC, remodel, ADU | Escalon · San Joaquin County | — | — |
| C T N Landscaping | C T N Landscaping | — | (925) 321 7788 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| C Valverde Construction | Christopher John Valverde | — | (209) 403 8844 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| C W I Steel INC | Carlos Manuel Jr Barrios | carlos@cwisteel.com | (209) 642 0167 | Other | Stockton · San Joaquin County | — | — |
| C&h Drywall And Interior Systems LLC | Juan Carlos Carrasco Olivera | — | (661) 492 5313 | Other | Stockton · San Joaquin County | — | — |
| C&s Hvac/r | Rafael Cuevas | — | (209) 915 1546 | HVAC | Stockton · San Joaquin County | — | — |
| C2 Acoustical And Insulation Specialty | Danny Cruz Jr Olaquibel | — | (209) 673 8949 | Other | Manteca · San Joaquin County | — | — |
| C4 Landscaping INC | Jose Manuel Cordeiro | — | (209) 642 2278 | Windows, patio, painters | Linden · San Joaquin County | — | — |
| Ca Attic Solutions INC | John David Sallas | info@caatticsolutions.com | (408) 444 4455 | HVAC | Tracy · San Joaquin County | — | — |
| Cabebe Construction INC | Shanon David Cabebe | — | (209) 321 7777 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Cabrera Family Construction | Yosimar Arturo Cabrera Juvinal | cabreraconstruction100@gmail.com | (408) 507 0549 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Cajigas Construction INC | Paul Rivera Cajigas | — | (209) 456 6819 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Cal - Networks INC | Jessie Inguanzo | — | (209) 825 6064 | Other | Manteca · San Joaquin County | — | — |
| Cal - Prime | Cal - Prime | — | (209) 482 0095 | Other | Manteca · San Joaquin County | — | — |
| Cal - Sun Construction INC | Richard Lyman Jr Cropper | — | (209) 333 2006 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Cal - West Pool INC | Cynthia Denise Aguilera | — | (209) 465 3139 | Pool | Stockton · San Joaquin County | — | — |
| Cal Engineering INC | Jossue Alberto Mejia | info@calengineering.com | (510) 282-5510 | Other | Stockton · San Joaquin County | — | — |
| Cal Power Electric Company | Julio Cesar Razo | — | (209) 271 6726 | Electricians | Stockton · San Joaquin County | — | — |
| Cal Property Pros LLC | Jeremiah Provience | calpropertypros@gmail.com | (209) 629 5541 | Other roofers | Lodi · San Joaquin County | — | — |
| Cal State Builder INC | Jaskaran Singh Shergill | — | (209) 430 5015 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Cal State Pro Painting Services INC | Ivan Roman Lopez Romero | — | (209) 407 0089 | Windows, patio, painters | Tracy · San Joaquin County | — | — |
| Cal Valley Landscape | Cal Valley Landscape | — | (209) 487 8988 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Cal-state Finishes | Cal-state Finishes | — | (209) 598 1403 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Caldera Jr's Painting | Caldera Jr's Painting | — | (562) 237 3747 | Windows, patio, painters | Lodi · San Joaquin County | — | — |