| Service Electric | Carl Stephen Meissner | — | (707) 954 2906 | Electricians | Cambria · San Luis Obispo County | — | — |
| Service Master Anytime | Service Master Anytime | — | (805) 541-3241 | Restoration | San Luis Obispo · San Luis Obispo County | — | — |
| Service Master-clean Care | Lynn Marie Kneizeh | — | (925) 337 5647 | Other | Paso Robles · San Luis Obispo County | — | — |
| Services By Tim | Timothy L Stapf | — | (805) 801 6907 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Servpro Of San Luis Obispo | Servpro Of San Luis Obispo | — | (805) 436-6132 | Restoration | San Luis Obispo · San Luis Obispo County | — | — |
| Servpro Of San Luis Obispo & Atascadero | Joseph Michael Powers | — | (805) 541 1271 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Sessions | Jamie Allyn Mosley | info@sessions.com | (661) 833 9501 | Other | Oceano · San Luis Obispo County | — | — |
| Shackelford Construction LLC | Thomas Shackelford | — | (805) 459 1226 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Shaffer Fire Protection | Shaffer Fire Protection | — | (805) 610 9946 | Other | Paso Robles · San Luis Obispo County | — | — |
| Shaffer Landscaping Co | Anson Palmer Shaffer | shafferlandscapingco@gmail.com | (805) 458 3938 | Windows, patio, painters | Morro Bay · San Luis Obispo County | — | — |
| Shamrock Plumbing | Shamrock Plumbing | — | (805) 550 8692 | Other | Los Osos · San Luis Obispo County | — | — |
| Sharc Welding | Sharc Welding | sean@sharcwelding.com | (805) 305 1544 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Shaun O'shea And Associates INC | Shaun Michael O'shea | — | (805) 235 5164 | GC, remodel, ADU | Cayucos · San Luis Obispo County | — | — |
| Shayne Wemple | Shayne Wemple | — | (805) 748 0368 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Sheldon Drywall & Custom Textures INC | Stuart Dean Sheldon | — | (805) 296 0592 | Other | Shandon · San Luis Obispo County | — | — |
| Shellback Landscapes | Shellback Landscapes | info@shellbacklandscapes.com | (805) 305 0840 | Windows, patio, painters | Arroyo Grande · San Luis Obispo County | — | — |
| Shenkman Construction Co | Lindsay Bree Shenkman | — | (805) 801 9718 | GC, remodel, ADU | Nipomo · San Luis Obispo County | — | — |
| Shepard Enterprises INC DBA James V Shepard Co | James Vandyke Shepard | — | (805) 238 0320 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Shetler Construction INC | Darren Wayne Shetler | — | (805) 549 8100 | Electricians | San Luis Obispo · San Luis Obispo County | — | — |
| Shewmaker Construction | Allen Lee Shewmaker | — | (805) 550 3369 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Shiffrar Grading & Excavating INC | Nicholas Everett Shiffrar | — | (805) 729 7243 | Other | Santa Margarita · San Luis Obispo County | — | — |
| Shoreline Awning & Patio INC | Daniel Preston Ryan | — | (805) 238 4110 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Shoreline Construction | Brian Keith Barandon | info@shoreline-construction.com | (805) 550 9678 | GC, remodel, ADU | Los Osos · San Luis Obispo County | — | — |
| Shoreline Plastering | Shoreline Plastering | — | (805) 471 0921 | Other | Paso Robles · San Luis Obispo County | — | — |
| Showplace Homes INC DBA J R Spencer Construction | Lorelei Lee Spencer | — | (805) 543 9165 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Shp Painting Services & Chimney Inspection Ltd | Shp Painting Services & Chimney Inspection Ltd | — | (949) 384-7545 | Windows, patio, painters | San Luis Obispo · San Luis Obispo County | — | — |
| Shutter Pro Designer Window Coverings | Shutter Pro Designer Window Coverings | — | (714) 273 4933 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Sickelton Construction | Christopher Abraham Sickelton | — | (805) 400 4021 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Sierra Exploration Drilling Co INC | David Lolen Strahan | info@sierraexplorationdrilling.com | (805) 238 3396 | Other | Paso Robles · San Luis Obispo County | — | — |
| Sierra Landscape Management | Sierra Landscape Management | — | (805) 801 4017 | Windows, patio, painters | Arroyo Grande · San Luis Obispo County | — | — |
| Sierra West Electrical INC | Sandra Sue Sheets | — | (805) 459 5425 | Electricians | Pismo Beach · San Luis Obispo County | — | — |
| Signature Millwork | Walter Allen Bell | — | (805) 471 3816 | Other | Arroyo Grande · San Luis Obispo County | — | — |
| Silkwood Construction | Jerry Dean Silkwood | — | (805) 709 0884 | GC, remodel, ADU | Oceano · San Luis Obispo County | — | — |
| Sill Construction | Joseph Jean Sill | — | (805) 440 1660 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Silva Construction | Kevin Gregory Silva | — | (805) 461 1572 | Electricians | Atascadero · San Luis Obispo County | — | — |
| Silva Landscape Group | Kenneth Leroy Silva | — | (805) 459 6011 | Windows, patio, painters | Atascadero · San Luis Obispo County | — | — |
| Silva Tile Design | Silva Tile Design | — | (805) 801 3541 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Silva's Home Improvement | Manuel Silva | — | (805) 286 1316 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Silver Fox Landscapes | Randall Keith Graber | — | (805) 489 0182 | Windows, patio, painters | Arroyo Grande · San Luis Obispo County | — | — |
| Silver Oak Construction & Concrete INC | Hugo Compos Garibay | — | (805) 929 2695 | Other | Nipomo · San Luis Obispo County | — | — |