| Chapman Construction | Mack Allen Chapman | — | (209) 505 4397 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Charles Schwab's Tree Service INC | Charles William Ii Schwab | — | (209) 568 1005 | Tree | Modesto · Stanislaus County | — | — |
| Charlie Leffingwell DBA Leffingwell Construction | Leffingwell Charlie | — | (209) 543 2107 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Charlystone Surfaces | Charlystone Surfaces | — | (209) 735 8653 | Other | Modesto · Stanislaus County | — | — |
| Chavez & Sons Heating And Air INC | Bulmaro Chavez Gutierrez | — | (209) 564 7576 | HVAC | Ceres · Stanislaus County | — | — |
| Chavez Concrete | Chavez Concrete | — | (209) 342 8318 | Other | Riverbank · Stanislaus County | — | — |
| Chavez Engineering INC | Hugo Joel Chavez Vazquez | — | (209) 914 9342 | Other | Modesto · Stanislaus County | — | — |
| Chavez Quality Plumbing LLC | Chavez Valdovinos Fernando | — | (408) 202 8554 | Other | Modesto · Stanislaus County | — | — |
| Chearys Affordable Painting LLC | Christopher Edgar Cheary | — | (209) 818 8935 | Windows, patio, painters | Waterford · Stanislaus County | — | — |
| Chief Drain & Plumbing | Chief Drain & Plumbing | — | (209) 581 9450 | Other | Ceres · Stanislaus County | — | — |
| Choice One Landscape | Choice One Landscape | — | (925) 759 2182 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| Chris Dray Heating & Air | Chris Dray Heating & Air | — | (209) 493 3729 | HVAC | Oakdale · Stanislaus County | — | — |
| Chrisaalo Garden Maintenance | Chrisaalo Garden Maintenance | — | (209) 620 4517 | Windows, patio, painters | Patterson · Stanislaus County | — | — |
| Christ Centered Construction | Kenneth Robert Chapman | — | (209) 495 2947 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Christopher A Poulsen DBA The Pool Company | Christopher Alan Poulsen | — | (209) 521 7381 | Electricians | Oakdale · Stanislaus County | — | — |
| Christopher Robert Kotowski Const | Christopher Robert Kotowski Const | — | (925) 922 0734 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Chuck Bush Construction INC | Charles Frederic Iv Bush | — | (209) 688 1907 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Chuck Sanders Construction | Dennis Charles Sanders | — | (209) 840 8464 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Chupp Electric | Kyle Abraham Chupp | — | (209) 652 4811 | Electricians | Modesto · Stanislaus County | — | — |
| Ciarolla Construction | Daniel Joseph Ciarolla | — | (209) 988 2596 | GC, remodel, ADU | Oakdale · Stanislaus County | — | — |
| Cima Electric INC | Cristian David Ramos Topete | — | (510) 975 5002 | Electricians | Modesto · Stanislaus County | — | — |
| Citation Enterprises | William George Dinkelmann | — | (209) 678 2960 | Electricians | Turlock · Stanislaus County | — | — |
| Citizen Corporation | Paige Don Spradling | info@citizen.com | (209) 531 1122 | Electricians | Modesto · Stanislaus County | — | — |
| City Certified Backflow Prevention INC | Jesus Jose Jimenez Cuevas | citycertifiedbackflow@gmail.com | (209) 634 7766 | Other | Newman · Stanislaus County | — | — |
| City Signs | Greg Lee Kyler | — | (209) 549 2412 | Other | Modesto · Stanislaus County | — | — |
| City Water Conservation INC | James Lewis Jr Bolin | info@citywaterconservation.com | (209) 249-0832 | Other | Modesto · Stanislaus County | — | — |
| City Water Filter Corporation | Leah Tan Rosson | %20info@citywaterfilter.com | (408) 658 0333 | Other | Ceres · Stanislaus County | — | — |
| Cityxtend INC | Sanchez Isaias | — | (951) 833 5431 | GC, remodel, ADU | Oakdale · Stanislaus County | — | — |
| Cj Builders INC | Carlos Manuel Vieira | — | (209) 353 1919 | GC, remodel, ADU | Ceres · Stanislaus County | — | — |
| Clark's Tree Works | Clark's Tree Works | — | (209) 570 8515 | Tree | Modesto · Stanislaus County | — | — |
| Clear Path Plumbing And Drain Cleaning Solutions | Stephen Thomas Jr Holloway | — | (209) 918 8500 | Other | Modesto · Stanislaus County | — | — |
| Clear View Windows INC | Michael John| Davies Mike John Davies | — | (209) 572 3045 | Windows, patio, painters | Ceres · Stanislaus County | — | — |
| Clearpath Energy INC | Jordan William Jones | — | (209) 596 0350 | Electricians | Modesto · Stanislaus County | — | — |
| Clearview Tree Service INC | Arlene Navarrette Fernandez | — | (209) 256 2009 | Tree | Oakdale · Stanislaus County | — | — |
| Clearwater Pool And Spa | Clearwater Pool And Spa | — | (209) 373 7112 | Pool | Oakdale · Stanislaus County | — | — |
| Clifford Petersen Electric INC DBA Petersen Electric | Clifford Evan Petersen | — | (209) 667 0555 | Electricians | Turlock · Stanislaus County | — | — |
| Climate Core Plumbing LLC | Mikhail Jackson Hutchins | info@climatecoreplumbing.com | (209) 273 9015 | Other | Modesto · Stanislaus County | — | — |
| Climate Heating & Air | Michael Richard Sacco | — | (209) 656 7123 | HVAC | Turlock · Stanislaus County | — | — |
| Climer Drywall INC | Jamie Christine Casey | — | (209) 529 1851 | Other | Ceres · Stanislaus County | — | — |
| Cm Construction And Maintenance INC | Charles Albrey Morrison | — | (209) 605 5554 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |