| Rick Parola Construction | Richard Paul Parola | — | (209) 613 6411 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Rick Trimble Heating And Cooling | Rick Trimble Heating And Cooling | — | (925) 786 8188 | HVAC | Modesto · Stanislaus County | — | — |
| Rick's Electric | Richard Wayne Wallace | — | (209) 535 2315 | Electricians | Turlock · Stanislaus County | — | — |
| Rick's Remodel | Rick's Remodel | — | (209) 918 5010 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Ricky Hauselmann DBA Regency Cabinets | Ricky Hauselmann DBA Regency Cabinets | — | (209) 495 8936 | Other | Oakdale · Stanislaus County | — | — |
| Rico Construction INC | Jaime Alfredo Nunez Rico | — | (209) 450 1093 | GC, remodel, ADU | Newman · Stanislaus County | — | — |
| Ridgevalley Roofing INC | Ricardo Dominguez | — | (209) 892 6464 | Other roofers | Patterson · Stanislaus County | — | — |
| Right Touch Screens And Windows | Right Touch Screens And Windows | — | (209) 522 5328 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| Rightway Painting | Rightway Painting | — | (209) 301 0526 | Windows, patio, painters | Turlock · Stanislaus County | — | — |
| Rigo's Concrete | Rigo's Concrete | — | (209) 241 4593 | Other | Modesto · Stanislaus County | — | — |
| Rigo's Custom Fencing INC | Jose Ramon Alcantar | — | (408) 821 7265 | Windows, patio, painters | Newman · Stanislaus County | — | — |
| Rigo's Flooring A Partnership | Mark Gilbert Franco | — | (209) 225 7742 | Other | Modesto · Stanislaus County | — | — |
| Rigorous Pool And Spa INC | Rigoberto Jr Trujillo | — | (209) 996 8633 | Pool | Ceres · Stanislaus County | — | — |
| Rising Builders Construction INC | Ravinder Singh | — | (209) 380 0365 | GC, remodel, ADU | Ceres · Stanislaus County | — | — |
| Rivas Construction Co | Jessie Edward Rivas | — | (209) 345 4856 | GC, remodel, ADU | Oakdale · Stanislaus County | — | — |
| River Oaks Tree Services | Montenegro Flora | — | (209) 484 3141 | Tree | Riverbank · Stanislaus County | — | — |
| River Tile & Marble INC | Rodriguez Andres Rios | — | (209) 678 7156 | Other | Turlock · Stanislaus County | — | — |
| Rivera & Son Electric INC | Jaime Sidney Rivera | — | (209) 918 6738 | Electricians | Newman · Stanislaus County | — | — |
| Rivera And Son Earth Moving And Grading INC | Patricia Rose Rivera | — | (209) 605 0017 | Other | Oakdale · Stanislaus County | — | — |
| Rivera Construction | Carlos Roberto Rivera | — | (209) 480 0025 | GC, remodel, ADU | Waterford · Stanislaus County | — | — |
| Riverbank Construction INC | Ryan Christopher Frame | — | (209) 747 1060 | GC, remodel, ADU | Riverbank · Stanislaus County | — | — |
| Riverbank Interiors | Riverbank Interiors | — | (209) 869 3684 | GC, remodel, ADU | Riverbank · Stanislaus County | — | — |
| Rj Leonis Incorporated | Daniel James Leonis | — | (408) 316 7505 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Rmz Drywall | Rmz Drywall | impallari@gmail.com | (209) 876 2976 | Other | Modesto · Stanislaus County | — | — |
| Rn3 Corp | Robert Wayne Mauk | — | (209) 602 5186 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Robert Brazil Services | Robert Adam Brazil | — | (209) 277 7910 | GC, remodel, ADU | Newman · Stanislaus County | — | — |
| Robert Caine | Robert Caine | — | (209) 303 6002 | Other | Modesto · Stanislaus County | — | — |
| Robert Charles Benton | Robert Charles Benton | — | (925) 890 7583 | GC, remodel, ADU | Oakdale · Stanislaus County | — | — |
| Robert G Brunker | Robert G Brunker | — | (209) 985 9851 | GC, remodel, ADU | Oakdale · Stanislaus County | — | — |
| Robert James Kulina | Robert James Kulina | — | (209) 499 3567 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Robert Mauk | Robert Mauk | — | (209) 404 5028 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Roberto Covarrubias | Roberto Covarrubias | — | (209) 485 0596 | Other | Turlock · Stanislaus County | — | — |
| Roberto's Garden Service | Torres Roberto | — | (209) 632 1971 | Windows, patio, painters | Denair · Stanislaus County | — | — |
| Robertson Construction | Joseph Malcolm Robertson | dave@robertsonconstruction.com | (321) 795-3655 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Robic Refrigeration INC | Gary Edward Johnson | — | (209) 632 8851 | HVAC | Turlock · Stanislaus County | — | — |
| Rocket Air INC | Rene Richard Martinez | hello@rocketair.com | (209) 778 3422 | HVAC | Modesto · Stanislaus County | — | — |
| Rockin R INC | Robin Renee Costa | — | (209) 495 9521 | Other | Oakdale · Stanislaus County | — | — |
| Roderick Painting | Roderick Painting | — | (209) 874 8188 | Windows, patio, painters | Waterford · Stanislaus County | — | — |
| Rodin Painting | Rodin Painting | — | (209) 544 1960 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| Rodriguez & Son's Electric | Mora Salomon Rodriguez | — | (209) 300 2118 | Electricians | Turlock · Stanislaus County | — | — |