| Raul Campos Landscapes | Raul Campos Landscapes | — | (510) 221 8544 | Windows, patio, painters | San Rafael · Marin County | — | — |
| Raul Rodriguez Construction A Partnership | Noe Figueroa | — | (510) 566 5067 | GC, remodel, ADU | Novato · Marin County | — | — |
| Raven Heating & Air Conditioning INC | David Alan Nance | — | (415) 328 7701 | HVAC | Novato · Marin County | — | — |
| Ravizza Design And Construction INC | Steffan Luke Ravizza | — | (415) 496 5151 | GC, remodel, ADU | Corte Madera · Marin County | — | — |
| Ray's Tree Complete Service INC | Tovias Caamal Reinaldo | — | (415) 987 2970 | Tree | San Rafael · Marin County | — | — |
| Raymond M Crampton | Raymond M Crampton | — | (415) 453 8088 | GC, remodel, ADU | Fairfax · Marin County | — | — |
| Raymond Villasenor Building Contractor | Raymond Villasenor Building Contractor | — | (415) 479 4393 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Rayner Landscaping INC | Eric Paul Rayner | — | (415) 279 9661 | Windows, patio, painters | Novato · Marin County | — | — |
| Rbi | Thomas Otto Raskowsky | — | (415) 279 9813 | GC, remodel, ADU | San Anselmo · Marin County | — | — |
| Re Remodeling | Re Remodeling | — | (415) 686 3519 | GC, remodel, ADU | San Anselmo · Marin County | — | — |
| Reales Painting | Reales Painting | — | (415) 532 5748 | Windows, patio, painters | Greenbrae · Marin County | — | — |
| Red Bird Landscaping INC | Fishman Hyman | — | (415) 897 3548 | Windows, patio, painters | Novato · Marin County | — | — |
| Red Dog Builders | Taylor Colding Swain | — | (415) 328 9311 | GC, remodel, ADU | Fairfax · Marin County | — | — |
| Red Mountain Heating And Air INC | Osvin Osveli Reyes Vasquez | — | (415) 949 9953 | HVAC | Novato · Marin County | — | — |
| Red Point Builders | Daniel Mark Johnson | — | (510) 507 1090 | GC, remodel, ADU | Sausalito · Marin County | — | — |
| Redhill Painting Incorporated | Philip John Storey | — | (415) 860 2943 | Windows, patio, painters | San Rafael · Marin County | — | — |
| Redhorse Constructors INC | Gerri Hofstetter | info@redhorseconstructors.com | (415) 492 2020 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Redwood Building Company LLC | Brian Patrick Miller | — | (415) 250 7818 | GC, remodel, ADU | Sausalito · Marin County | — | — |
| Redwood Design & Build | Redwood Design & Build | — | (628) 264 4413 | GC, remodel, ADU | Mill Valley · Marin County | — | — |
| Redwood Electric | Michael John Mazzoni | — | (415) 892 4900 | Electricians | Novato · Marin County | — | — |
| Redwood Engineering | Robert Entwistle Poole | — | (415) 435 0768 | Other | Tiburon · Marin County | — | — |
| Redwood Seamless Gutters | Dannie Greg Hixenbaugh | — | (415) 209 9344 | Other | Novato · Marin County | — | — |
| Redwood Security Systems INC | Robert Joseph Nagy | — | (415) 388 5355 | Electricians | Mill Valley · Marin County | — | — |
| Redwood Valley Construction INC | Byron Todd Hector | — | (415) 577 3786 | GC, remodel, ADU | Sausalito · Marin County | — | — |
| Refined Spaces | Martinez Abel Cabrera | info@refined-spaces.com | (415) 827 8879 | GC, remodel, ADU | Novato · Marin County | — | — |
| Refresh And Build INC | Sofiane Chekroun | — | (415) 678 8758 | GC, remodel, ADU | Mill Valley · Marin County | — | — |
| Reichert Building Solutions INC | William Alfredo Reichert | — | (707) 509 9369 | GC, remodel, ADU | Novato · Marin County | — | — |
| Reliable Home Remodeling & Construction | Igor Vladimirovic Belov | — | (415) 745 0833 | Electricians | San Rafael · Marin County | — | — |
| Residence Artists | Andrew Woodside Landies | — | (415) 302 6371 | GC, remodel, ADU | Novato · Marin County | — | — |
| Resilience Land Tending | Resilience Land Tending | resiliencelandtending@gmail.com | (415) 323 3564 | Windows, patio, painters | Fairfax · Marin County | — | — |
| Resilient Marin Construction | Aaron Cotter Gruenert | — | (415) 259 7375 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Resolute Design & Construction INC | Sebastien Claude Gasto Guinard | — | (415) 897 1831 | GC, remodel, ADU | Novato · Marin County | — | — |
| Restaurant Repair INC | Joseph Bennett Carlin | — | (415) 456 3555 | HVAC | Sausalito · Marin County | — | — |
| Reyes Heating And Air INC | Magdali Udiel Reyes Vasquez | reyesheatingandair@gmail.com | (415) 845 0335 | HVAC | Novato · Marin County | — | — |
| Reyes Landscape Construction | Felipe Orona Reyes | — | (415) 747 8633 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Reza Heydari | Reza Heydari | — | (415) 458 8786 | Other | San Rafael · Marin County | — | — |
| Rfw Builders INC | Robert Francis Walley | — | (415) 710 7039 | GC, remodel, ADU | Novato · Marin County | — | — |
| Rhodes Construction INC | Richard Alexander Rhodes | interested@domainmarket.com | (415) 819 8285 | GC, remodel, ADU | San Anselmo · Marin County | — | — |
| Rhys Sanders | Rhys Sanders | — | (415) 408 8808 | Windows, patio, painters | Sausalito · Marin County | — | — |
| Rich Armusewicz Construction | Richard Joseph Armusewicz | — | (415) 899 0260 | GC, remodel, ADU | Novato · Marin County | — | — |