| Revel Environmental Manufacturing INC | Charles Revel Fleischmann | — | (925) 676 4736 | Other | Concord · Contra Costa County | — | — |
| Revive Plumbing | Revive Plumbing | — | (415) 802 3754 | Other | Pittsburg · Contra Costa County | — | — |
| Rex Lock & Safe INC | Mark Ryan Schlaich | — | (925) 798 9673 | Other | Concord · Contra Costa County | — | — |
| Reycom INC | Joshua Reyes | — | (925) 222 9178 | Electricians | Antioch · Contra Costa County | — | — |
| Reyes E Construction INC | Reyes Aguilera Enrique | — | (925) 858 6418 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| Reyes Jjs Construction INC | Brian William Pfaff | — | (925) 705 2591 | GC, remodel, ADU | Antioch · Contra Costa County | — | — |
| Reyes Painting INC | Joselito Bersabe Reyes Diaz | — | (415) 524 5488 | Windows, patio, painters | Richmond · Contra Costa County | — | — |
| Reyes Plumbing | Reyes Plumbing | — | (510) 222 2282 | Other | Richmond · Contra Costa County | — | — |
| Reynolds Construction | Barney Franklin Reynolds | — | (925) 219 6452 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Rez Construction INC | Nour Reza | — | (425) 891 4425 | GC, remodel, ADU | Danville · Contra Costa County | — | — |
| Rf Painting | Rf Painting | — | (510) 680 0117 | Windows, patio, painters | Richmond · Contra Costa County | — | — |
| Rga Concrete INC | Amaya Rodolfo Gomez | — | (925) 252 3604 | Other | Antioch · Contra Costa County | — | — |
| Rgs INC | Troy Anthony Saunders | — | (925) 787 9650 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| Rhino Builders INC | Omri Dror | — | (925) 233 0109 | GC, remodel, ADU | Lafayette · Contra Costa County | — | — |
| Rhino Shield Of Northern California | Irving Eduardo Dzul Diaz | — | (935) 248 4009 | Windows, patio, painters | Danville · Contra Costa County | — | — |
| Rhodes Construction | Omar Amir Mutwakil | interested@domainmarket.com | (925) 553 6653 | GC, remodel, ADU | Diablo · Contra Costa County | — | — |
| Ri Electric LLC | Richard Allen Reitz | — | (925) 784 0220 | Electricians | Discovery Bay · Contra Costa County | — | — |
| Riazati Design Build | Riazati Design Build | — | (510) 755 6295 | GC, remodel, ADU | Martinez · Contra Costa County | — | — |
| Rich Mc Carthy Plumbing | Rich Mc Carthy Plumbing | — | (925) 798 1815 | Other | Clayton · Contra Costa County | — | — |
| Richard Avelar & Associates Reconstruction Services DBA | Tracy Lee Hill | — | (925) 433 0403 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Richard B Moore | Richard B Moore | — | (510) 414 6019 | GC, remodel, ADU | Danville · Contra Costa County | — | — |
| Richard Caulfield | Richard Caulfield | — | (925) 812 0717 | GC, remodel, ADU | Pacheco · Contra Costa County | — | — |
| Richard Crum | Richard Crum | — | (510) 776 1442 | GC, remodel, ADU | El Sobrante · Contra Costa County | — | — |
| Richard Flooring & Tile Services LLC | Chuquiyauri Sanchez Richard | — | (925) 214 7625 | Other | Antioch · Contra Costa County | — | — |
| Richard Kleker Plumbing | Richard Kleker Plumbing | — | (925) 768 7831 | Other | Pleasant Hill · Contra Costa County | — | — |
| Richard L Dickinson | Richard L Dickinson | — | (510) 776 5082 | GC, remodel, ADU | Richmond · Contra Costa County | — | — |
| Richmond Tile Solutions | Maria De Lourde Sanchez Tostado | — | (510) 776 8256 | Other | Richmond · Contra Costa County | — | — |
| Rick Rutherford Plastering INC | Richard Dorsey Rutherford | — | (510) 387 5526 | Other | El Cerrito · Contra Costa County | — | — |
| Rick's Tooltime INC | Richard Arlis Johnson | — | (510) 703 6178 | GC, remodel, ADU | Danville · Contra Costa County | — | — |
| Rick's Welding & Engineering | Rick's Welding & Engineering | — | (925) 625 3516 | Other | Oakley · Contra Costa County | — | — |
| Ricker Thermline Incorporated | Jason Dewey Ricker | — | (925) 685 8890 | GC, remodel, ADU | Martinez · Contra Costa County | — | — |
| Rickie's Roof Repair | Rickie's Roof Repair | — | (925) 813 9520 | Other roofers | Brentwood · Contra Costa County | — | — |
| Ricky's Painting | Ricky's Painting | — | (925) 705 0835 | Windows, patio, painters | Bay Point · Contra Costa County | — | — |
| Rico's General Construction INC | Francisco Rodrigo Rico Avalos | — | (415) 685 8466 | GC, remodel, ADU | El Sobrante · Contra Costa County | — | — |
| Ridge Communications INC | Michael Shawn Patridge | — | (925) 498 2340 | Electricians | San Ramon · Contra Costa County | — | — |
| Ridgecrest Builders INC | Lawrence John Linchey | — | (925) 250 8170 | GC, remodel, ADU | Alamo · Contra Costa County | — | — |
| Riedel Precision Landscaping INC | John Gerard Riedel | — | (925) 250 9300 | Windows, patio, painters | Oakley · Contra Costa County | — | — |
| Rienzo Construction Co | Rienzo Gary | — | (510) 368 5217 | GC, remodel, ADU | Richmond · Contra Costa County | — | — |
| Right - Way Corrigon | Right - Way Corrigon | — | (925) 286 8010 | Other | Concord · Contra Costa County | — | — |
| Rigo's Metal Gutter Service | Hernandez Rigoberto Melena | — | (925) 628 1722 | Other | Oakley · Contra Costa County | — | — |