| Rapp Electric | George Clay Rapp | — | (805) 709 1774 | Electricians | Oceano · San Luis Obispo County | — | — |
| Rarig Construction INC | Michael Park Rarig | — | (805) 543 9397 | Other roofers | San Luis Obispo · San Luis Obispo County | — | — |
| Raul Anguiano | Raul Anguiano | — | (805) 712 1185 | Other | Paso Robles · San Luis Obispo County | — | — |
| Raul Zapata | Raul Zapata | — | (805) 471 3344 | GC, remodel, ADU | Morro Bay · San Luis Obispo County | — | — |
| Ray Brouse Electric | Ray Alan Brouse | — | (805) 574 3925 | Electricians | Arroyo Grande · San Luis Obispo County | — | — |
| Ray Espinoza Plumbing | Ray Espinoza Plumbing | — | (805) 835 2196 | Other | Paso Robles · San Luis Obispo County | — | — |
| Rch Contractors INC | Christopher Albert Ramirez | — | (805) 801 0261 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Rcr Rental Company LLC | Scott Wayne Hutchins | — | (805) 610 3881 | Other | Paso Robles · San Luis Obispo County | — | — |
| Rdp Environmental Engineering | Louis John Cappel | — | (805) 712 5842 | Other | Atascadero · San Luis Obispo County | — | — |
| Rdz Contractors INC | Pedro Vega Rodriguez | — | (805) 458 5252 | GC, remodel, ADU | Nipomo · San Luis Obispo County | — | — |
| Re Construction LLC | Robert Carey Easterbrook | — | (805) 975 5460 | Other | San Miguel · San Luis Obispo County | — | — |
| Reasons & Sons Painting | Reasons & Sons Painting | — | (805) 863 4424 | Windows, patio, painters | San Miguel · San Luis Obispo County | — | — |
| Reasons Slo Fence | Samuel Gene Reasons | — | (805) 543 4600 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Red Alert Plumbing And Fire Sprinklers | Brian Neil Mc Laughlin | — | (805) 550 5060 | Other | Pismo Beach · San Luis Obispo County | — | — |
| Red Bud Construction | Kacy Rose Thorn | — | (805) 234 5934 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Red Carpet Interlocking Pavers | Red Carpet Interlocking Pavers | — | (805) 471 1959 | Other | Atascadero · San Luis Obispo County | — | — |
| Red Oak Security | Red Oak Security | — | (805) 542-8400 | Alarm and generators | San Luis Obispo · San Luis Obispo County | — | — |
| Red Pony Company | Raymond Glenn Vidler | — | (805) 674 7388 | Other | Paso Robles · San Luis Obispo County | — | — |
| Red Rhino Construction | Eric William Olson | — | (805) 901 6094 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Red Tail Landscapes | Red Tail Landscapes | — | (805) 591 9314 | Windows, patio, painters | Paso Robles · San Luis Obispo County | — | — |
| Red's Plumbing INC | Steven Joseph Pahler | — | (805) 466 6188 | Other | Atascadero · San Luis Obispo County | — | — |
| Redtail Renovations | Micaiah Kurt Saltzman | mike.redtail@gmail.com | (559) 303 3003 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Reed's Heating | Tamara Lee Reed | — | (805) 227 4713 | HVAC | Paso Robles · San Luis Obispo County | — | — |
| Reedall Construction | Mark Scott Reedall | — | (805) 235 5956 | GC, remodel, ADU | Cambria · San Luis Obispo County | — | — |
| Reg Property Management Inc. | Reg Property Management Inc. | — | (805) 541-6664 | Property managers | San Luis Obispo · San Luis Obispo County | — | — |
| Regal Flooring Solutions | Regal Flooring Solutions | — | (805) 980 5144 | Other | Oceano · San Luis Obispo County | — | — |
| Regan's Electric | Peter Andrew Haun Regan | — | (707) 372 6836 | Electricians | Morro Bay · San Luis Obispo County | — | — |
| Regan's Heating And Air Conditioning | Regan's Heating And Air Conditioning | — | (805) 806 5667 | HVAC | Paso Robles · San Luis Obispo County | — | — |
| Rem-luk Const Co | Luke Paul Remillard | — | (805) 709 2656 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Remodel Pros INC | Benjamin James Degarmo | — | (805) 462 8100 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Rendler Construction Company | James Henry Rendler | — | (408) 891 8303 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Renewable Fuels INC | Mata Gussie Iaia | — | (805) 228 2944 | Other | Paso Robles · San Luis Obispo County | — | — |
| Rep Co | Thomas Alan Reposa | — | (805) 610 7640 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Rex's Rooter Plumbing INC | Rex Phillip Springer | — | (805) 929 2278 | Other | Nipomo · San Luis Obispo County | — | — |
| Reynoso Framing LLC | Jose Jesus Reynoso Montiel | — | (805) 591 0207 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Rhb Property Management Of San Luis Obispo | Rhb Property Management Of San Luis Obispo | — | (805) 723-2404 | Property managers | San Luis Obispo · San Luis Obispo County | — | — |
| Rhino Construction | Reinar Clinton Adamson | — | (805) 835 7841 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Rhodes Construction | Kenneth Joseph Rhodes | interested@domainmarket.com | (805) 471 6958 | GC, remodel, ADU | Los Osos · San Luis Obispo County | — | — |
| Rhodes Plumbing | Rhodes Plumbing | info@rhodesplumbing.com | (805) 598 2569 | Other | Nipomo · San Luis Obispo County | — | — |
| Rhys Building | Rhys Building | — | (805) 235 2584 | GC, remodel, ADU | Cayucos · San Luis Obispo County | — | — |