| Robert's Carpet Installation | Robert's Carpet Installation | — | (209) 814 6818 | Other | Tracy · San Joaquin County | — | — |
| Roberto Elizalde | Roberto Elizalde | — | (209) 403 9454 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Roberts Firestop | Roberts Firestop | — | (510) 867 5656 | Other | Stockton · San Joaquin County | — | — |
| Roberts Tree Care | Roberts Tree Care | — | (209) 570 4540 | Tree | Stockton · San Joaquin County | — | — |
| Robillard Construction | Gregory Mark Robillard | — | (510) 329 7793 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Robinson Lighting & Sign Service INC | Dawna Rae Robinson | — | (209) 404 7911 | Other | Escalon · San Joaquin County | — | — |
| Rocca Bella Pools | Luis Manuel Ramos Martinez | — | (916) 826 0399 | Pool | Lodi · San Joaquin County | — | — |
| Rocha's Cabinets | Anthony John Cardoz Rocha | — | (209) 239 2367 | Other | Manteca · San Joaquin County | — | — |
| Rocha's Roofing INC | Soto Eusebio Rocha | — | (209) 905 0746 | Other roofers | Stockton · San Joaquin County | — | — |
| Rock Steady Garage Doors | Rock Steady Garage Doors | rocksteadygds@gmail.com | (209) 808 8008 | Other | Ripon · San Joaquin County | — | — |
| Rockin Repair & Remodel | Rockin Repair & Remodel | — | (510) 304 8408 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Rocksolid Cabinets | Rocksolid Cabinets | — | (209) 495 6577 | Other | Manteca · San Joaquin County | — | — |
| Rocky Communications INC | Robert Joshua Mccracken | — | (408) 228 2727 | Other | Tracy · San Joaquin County | — | — |
| Rod Mc Cracken Construction | Rodney Paul Mc Cracken | — | (209) 471 2299 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Roddan Construction INC | Todd Joseph Roddan | — | (209) 610 8041 | GC, remodel, ADU | Ripon · San Joaquin County | — | — |
| Rodeo Epoxy Floors INC | Mario Alberto Espinoza Quezada | — | (209) 740 9040 | Other | Tracy · San Joaquin County | — | — |
| Roderick Electric | John Manuel Jr Roderick | john@smith.com | (209) 472 1022 | Electricians | Stockton · San Joaquin County | — | — |
| Rodgers Electrical | Rex Robert Rodgers | — | (209) 985 9347 | Electricians | Ripon · San Joaquin County | — | — |
| Rodriguez De La O Painting & Decor | La O Monica De | — | (619) 807 5766 | Windows, patio, painters | Tracy · San Joaquin County | — | — |
| Rodriguez Electrical INC | Mario Rodriguez | — | (559) 824 9177 | Electricians | Lodi · San Joaquin County | — | — |
| Rodriguez Painting | Rodriguez Painting | — | (209) 271 9039 | Windows, patio, painters | Manteca · San Joaquin County | — | — |
| Roe Refrigeration | Roe Refrigeration | — | (209) 483 2814 | HVAC | Ripon · San Joaquin County | — | — |
| Rogelio Gutierrez | Rogelio Gutierrez | — | (209) 612 7248 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Roger Peters | Roger Peters | — | (209) 838 3092 | Other | Escalon · San Joaquin County | — | — |
| Roger Varwig | Roger Varwig | — | (209) 993 6110 | Other | Stockton · San Joaquin County | — | — |
| Rogue Electricians LLC | Richard Chaves | — | (559) 725 5774 | Electricians | Stockton · San Joaquin County | — | — |
| Rojas Custom Concrete | Gustavo Adolfo Rojas | gusrockz93@gmail.com | (209) 371 1440 | Other | Lodi · San Joaquin County | — | — |
| Rojop Tile & Stone | Rojop Tile & Stone | — | (209) 642 2890 | Other | Lodi · San Joaquin County | — | — |
| Roland Construction INC | Sean Patrick Carroll | — | (209) 462 2687 | Other roofers | Stockton · San Joaquin County | — | — |
| Roman Flooring | Roman Flooring | — | (510) 200 2324 | Other | Stockton · San Joaquin County | — | — |
| Romero Management Services | Robert William Romero | — | (209) 951 5090 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Romo Flooring | Romo Flooring | — | (209) 430 9013 | Other | Manteca · San Joaquin County | — | — |
| Ron Painting | Ron Painting | — | (209) 639 8257 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Ron Williams Certified Roof & Roof Inspection LLC | Ronnie Lee Williams | — | (800) 409 4910 | Other roofers | Stockton · San Joaquin County | — | — |
| Ron's Window Tinting | Ron's Window Tinting | — | (209) 333 1181 | Other | Lodi · San Joaquin County | — | — |
| Ronnie Lozano Company | Ronnie Jon Lozano | — | (209) 471 5437 | Other | Lodi · San Joaquin County | — | — |
| Roof Doctors San Joaquin County | Roof Doctors San Joaquin County | — | (209) 957-7663 | Other roofers | Stockton · San Joaquin County | — | — |
| Rooted Arbor Care | Villanueva Martin Garcia | — | (209) 294 8832 | Other | Lodi · San Joaquin County | — | — |
| Rosas Woodwork INC | Victor Hugo Rosas | — | (209) 200 5850 | Other | Lodi · San Joaquin County | — | — |
| Rosendo Perez Painting | Rosendo Perez Painting | — | (408) 221 1966 | Windows, patio, painters | Stockton · San Joaquin County | — | — |