| Rhythm & Roots Landscaping INC | Braden Marshall Lloyd | — | (805) 748 0329 | Windows, patio, painters | Cayucos · San Luis Obispo County | — | — |
| Ribas Services Corp | Daniel Gomes Ribas | — | (805) 550 6160 | Other roofers | Atascadero · San Luis Obispo County | — | — |
| Rice Heating & Air Conditioning INC | Charles Edward Dowdy | — | (805) 543 6359 | HVAC | Grover Beach · San Luis Obispo County | — | — |
| Rich Caddy Plastering | Rich Caddy Plastering | — | (805) 801 8326 | Other | Atascadero · San Luis Obispo County | — | — |
| Richard A Benson Plumbing INC DBA Benson Plumbing & Supplies | Richard Allan Benson | — | (831) 320 1839 | Other | Oceano · San Luis Obispo County | — | — |
| Richard A Dugan Construction Co | Richard Allen Dugan | — | (805) 610 9542 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Richard Blake DBA Paso Robles Handyman | Paso Robles Handyman | — | (805) 835 5207 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Richard Johnson Construction | Richard Carl Johnson | — | (805) 235 3588 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Richard R Wenz | Richard R Wenz | — | (805) 748 9744 | Other | Morro Bay · San Luis Obispo County | — | — |
| Richard Stanley Gorham | Richard Stanley Gorham | — | (805) 452 1036 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Richenberg Construction | Davin Sevier Richenberg | — | (805) 215 3825 | GC, remodel, ADU | Los Osos · San Luis Obispo County | — | — |
| Richetti Water Solutions INC | Gregory Allen Rice | — | (805) 489 4052 | Other | Arroyo Grande · San Luis Obispo County | — | — |
| Ricigliano Construction | Frank Michael Ricigliano | — | (805) 237 1026 | GC, remodel, ADU | Templeton · San Luis Obispo County | — | — |
| Rick Albro Construction | Richard John Jr Albro | — | (805) 528 8455 | GC, remodel, ADU | Los Osos · San Luis Obispo County | — | — |
| Rick Holley Flooring | Rick Holley Flooring | rickholleyflooring@gmail.com | (805) 453 6667 | Other | Arroyo Grande · San Luis Obispo County | — | — |
| Rick Valente Construction INC | Richard Peter Valente | info@ndiscovered.com | (805) 674 1147 | GC, remodel, ADU | Creston · San Luis Obispo County | — | — |
| Rick's Home Improvements INC | Richard Sean Allan | — | (805) 459 8550 | GC, remodel, ADU | Cambria · San Luis Obispo County | — | — |
| Rietkerk Sheetmetal | Rietkerk Sheetmetal | — | (805) 541 1484 | Other | Grover Beach · San Luis Obispo County | — | — |
| Riggs Construction | Douglas Alan Riggs | — | (805) 550 5873 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Riley General Engineering INC | Wesley Riley Nanasy | — | (805) 459 8157 | Other | Atascadero · San Luis Obispo County | — | — |
| Riley Perkins Concrete | Riley Perkins Concrete | rileyperkinsconcrete@gmail.com | (805) 748 2494 | Other | Morro Bay · San Luis Obispo County | — | — |
| Riley Precision Construction INC | Kevin Patrick Riley | — | (805) 550 0049 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Rincon Pools And Consulting | Rincon Pools And Consulting | — | (805) 403 4006 | Pool | Pismo Beach · San Luis Obispo County | — | — |
| Rising Tide Companies LLC | Riley Thomas Liles | — | (805) 458 7896 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Ritchie Built LLC | Jack Alexander Ritchie | jack@ritchiebuilt.com | (661) 440 7174 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Ritenour Landscape | Ritenour Landscape | — | (805) 260 3766 | Windows, patio, painters | Nipomo · San Luis Obispo County | — | — |
| Ritter Construction | Anthony Lee Ritter | — | (805) 239 8458 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Rja Construction Co INC | Robert John Arciero | — | (805) 237 7547 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Rjl Construction | Rodney Joe Lopez | — | (805) 714 1520 | GC, remodel, ADU | Pismo Beach · San Luis Obispo County | — | — |
| Roadrunner Construction | Richard Phillip Gonzales | — | (805) 423 3714 | Other | Paso Robles · San Luis Obispo County | — | — |
| Roadrunner Home Repair | Tyler George Enriquez | %20roadrunnerhomerepair@gmail.com | (805) 550 1702 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Roadrunner Plumbing | Roadrunner Plumbing | — | (805) 489 1508 | Other | Oceano · San Luis Obispo County | — | — |
| Rob Butler Painting | Rob Butler Painting | robbutlerpainting@gmail.com | (805) 712 4155 | Windows, patio, painters | Templeton · San Luis Obispo County | — | — |
| Rob Davis Backhoe | Rob Davis Backhoe | — | (805) 423 5703 | Other | Atascadero · San Luis Obispo County | — | — |
| Rob Davis Construction | Robert Arnold Jr Davis | eben@eyebytes.com | (805) 610 9580 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Rob Luse Painting | Rob Luse Painting | — | (805) 748 2252 | Windows, patio, painters | Arroyo Grande · San Luis Obispo County | — | — |
| Rob Reynolds Construction INC | Robert Louis Reynolds | — | (805) 238 1636 | Electricians | Creston · San Luis Obispo County | — | — |
| Rob Tol Construction | Tol Robert | — | (805) 440 0985 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Robert Almekinder Construction Company | Robert Wayne Almekinder | — | (805) 234 3577 | GC, remodel, ADU | Cayucos · San Luis Obispo County | — | — |
| Robert B Enns Construction INC | Lynn Barker Enns | — | (805) 471 0651 | GC, remodel, ADU | Cayucos · San Luis Obispo County | — | — |