| Cost - U - Less Glass | Ramon Jr Gonzalez | costulessglass69@gmail.com | (209) 652 2875 | Windows, patio, painters | Ceres · Stanislaus County | — | — |
| Cost Effective Welding | Elias Jr Perez | — | (209) 250 2240 | Other | Turlock · Stanislaus County | — | — |
| Costa's Home Improvement | Costa's Home Improvement | — | (209) 566 5065 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Cota Brothers Custom Tile INC | Bruno Miguel Cota | — | (209) 409 2887 | Other | Modesto · Stanislaus County | — | — |
| Coto Windows INC | Tristi Gay Coto Cummins | — | (209) 534 7075 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| Country Garden Interiors | Country Garden Interiors | — | (209) 996 8313 | Other | Modesto · Stanislaus County | — | — |
| Court Yard Lawn Care | Court Yard Lawn Care | — | (209) 495 8157 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| Covarrubias & Son Construction | Raul Padilla Covarrubias | — | (209) 614 2689 | GC, remodel, ADU | Waterford · Stanislaus County | — | — |
| Cowan's Cabinet Co | Curtis Paul Cowan | — | (209) 523 0293 | Other | Waterford · Stanislaus County | — | — |
| Cr Acoustics | Cr Acoustics | — | (209) 595 8541 | Other | Oakdale · Stanislaus County | — | — |
| Craftsman Construction | Larnou Garcia Eduardo | — | (209) 765 2668 | Other | Ceres · Stanislaus County | — | — |
| Craig E Campbell | Craig E Campbell | — | (209) 595 4867 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Craig Parsons DBA C P Construction | Craig Michael Parsons | — | (209) 595 3315 | GC, remodel, ADU | Oakdale · Stanislaus County | — | — |
| Craig's Excavating | Michael Wesley Craig | — | (209) 262 5448 | Other | La Grange · Stanislaus County | — | — |
| Crc Construction & Remodel | Campanur Reynaldo | — | (209) 202 8891 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Creative Air Conditioning & Heating | Creative Air Conditioning & Heating | — | (209) 648 5965 | HVAC | Denair · Stanislaus County | — | — |
| Creative Fabworx & Construction | Dennis Lee Nutter | — | (209) 568 3534 | GC, remodel, ADU | Oakdale · Stanislaus County | — | — |
| Creative Flooring | Creative Flooring | — | (209) 300 1527 | Other | Salida · Stanislaus County | — | — |
| Creative Painting And Decorating | Creative Painting And Decorating | — | (209) 543 4875 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| Crisp Construction | Robert James Crisp | — | (209) 604 1487 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Cristian Mercado Electric INC | Cristian Geovany Mercado Claros | — | (407) 301 7893 | Electricians | Ceres · Stanislaus County | — | — |
| Cronkite Electric | Sebastian Diego Cronkite | — | (209) 702 3370 | Electricians | Modesto · Stanislaus County | — | — |
| Crossway Plumbing INC DBA Crossway Plumbing | Singh Athil | — | (209) 210 0201 | Other | Modesto · Stanislaus County | — | — |
| Crown Kitchen & Bath | Crown Kitchen & Bath | — | (408) 242 3175 | GC, remodel, ADU | Hickman · Stanislaus County | — | — |
| Crown Painting INC | Gretchen Haidlen| Poncabare Gretchen A Arbini | — | (209) 322 3275 | GC, remodel, ADU | Oakdale · Stanislaus County | — | — |
| Crux Construction INC | Anthony Dino Rodriguez | — | (408) 310 6566 | GC, remodel, ADU | Patterson · Stanislaus County | — | — |
| Cruz Construction | Cruz Serrano Raul | — | (209) 281 9479 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Cruz Drywall INC | Jose Alejandro Valencia | — | (209) 996 6628 | Other | Modesto · Stanislaus County | — | — |
| Cruz Heating & Air Conditioner | Cruz Heating & Air Conditioner | — | (209) 408 6890 | HVAC | Ceres · Stanislaus County | — | — |
| Cruzer Air INC | Jaime Jose Cruz | — | (209) 495 6822 | HVAC | Newman · Stanislaus County | — | — |
| Crystal King Water Conditioning Company | Steven Edward Pound | — | (209) 551 0811 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Css Electric | Victor Hugo Navarrete | — | (209) 850 9290 | Electricians | Turlock · Stanislaus County | — | — |
| Ctc Engineering And Construction INC | Camron Thomas Crouch | — | (209) 639 9810 | Other | Modesto · Stanislaus County | — | — |
| Cummins Contracting And Supply Company A California Corporation | Ronald Glenn Cummins | — | (209) 523 4523 | Electricians | Modesto · Stanislaus County | — | — |
| Curbside Concrete Pumping Service | Gonzalez Genaro | — | (209) 602 0755 | Other | Modesto · Stanislaus County | — | — |
| Custom Carpets INC | Jody Carey Mortensen | — | (209) 988 6871 | Other | Oakdale · Stanislaus County | — | — |
| Custom Changes | Custom Changes | — | (925) 577 7184 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Custom Fab Welding Services | Mike James Pouliot | — | (209) 226 2005 | Other | Turlock · Stanislaus County | — | — |
| Custom Komfort Construction | Edward Joseph Ii Kelly | — | (209) 595 1637 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Custom Locksmith & Alarm INC | Mark Anthony Serpa | — | (209) 668 3606 | Alarm and generators | Turlock · Stanislaus County | — | — |