| Sparked Up Electrical | Denton Don Davis | — | (916) 728 8242 | Electricians | Colfax · Placer County | — | — |
| Sparkle Wash Of Placer County | Mark Alan Sherer | — | (530) 401 8441 | Other | Auburn · Placer County | — | — |
| Sparkwise Electrical Service | Viktor Klimanov | — | (279) 239 0168 | Electricians | Rocklin · Placer County | — | — |
| Spartan Home Services | Jeffrey Lee Tilford | info@spartanhomepros.com | (916) 249 7777 | Other roofers | Roseville · Placer County | — | — |
| Spartan Tree Service | Jubiela Isabel Aguilar | — | (916) 909 9533 | Tree | Loomis · Placer County | — | — |
| Special Order Systems INC | Nutt Gia Mc | — | (916) 632 8800 | Other | Loomis · Placer County | — | — |
| Specialized Audio And Video INC | Richard Edward O Donnell | — | (916) 797 6332 | Other | Roseville · Placer County | — | — |
| Specialized Plumbing & Sewer Repair | Charles Lloyd Iii Hartranft | — | (916) 823 1255 | Other | Roseville · Placer County | — | — |
| Spector Usa LLC | Sergey Ivanov | — | (916) 260 7787 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Spiteri Bros Hardwood Flooring INC | Steven Anthony Sanguinetti | steve@spiteribroshardwoodflooring.com | (530) 888 1449 | Other | Auburn · Placer County | — | — |
| Splash Pool Care | Christopher Clifton Moore | — | (916) 870 5136 | Pool | Roseville · Placer County | — | — |
| Splash! Pool Services | Donald Lee Rosenkrans | — | (530) 885 5242 | Pool | Auburn · Placer County | — | — |
| Spoor's Heating & Air Conditioning INC | Nikki Ann Wade | — | (530) 878 4812 | HVAC | Auburn · Placer County | — | — |
| Spring Roofing INC | Pavel Chorney | — | (916) 532 6157 | Other roofers | Auburn · Placer County | — | — |
| Springs Painting Co INC | Emanuel Martis | — | (916) 826 3029 | Windows, patio, painters | Roseville · Placer County | — | — |
| Springtown Electric | Nicholas Loren Paonessa | springtownelectric@gmail.com | (916) 899 2079 | Electricians | Lincoln · Placer County | — | — |
| Sprinkler Logic | James Craig Chillquist | — | (916) 406 4500 | Windows, patio, painters | Roseville · Placer County | — | — |
| Sprinkler Medic INC | Ricky Lee Johnson | — | (916) 663 9931 | Windows, patio, painters | Lincoln · Placer County | — | — |
| Sprinkler Solutions Norcal And Landscape | Sprinkler Solutions Norcal And Landscape | — | (925) 354 4248 | Windows, patio, painters | Auburn · Placer County | — | — |
| Square Up Construction INC | George Cyrus Iii Knowlton | — | (916) 276 0971 | GC, remodel, ADU | Granite Bay · Placer County | — | — |
| Squaw Valley Lighting | Squaw Valley Lighting | — | (530) 412 1781 | Electricians | Olympic Valley · Placer County | — | — |
| Srb Construction | Soni Samridhi | — | (510) 557 8190 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Ssec INC | Trevor Scott Robertson | — | (800) 578 2354 | Windows, patio, painters | Newcastle · Placer County | — | — |
| St Construction | Michael Ryan Massa | — | (916) 792 4989 | GC, remodel, ADU | Roseville · Placer County | — | — |
| St Mary's Garage Door Services | Basem Shnoda Azr Tawadrous | — | (916) 730 3491 | Other | Roseville · Placer County | — | — |
| Stabile Electric LLC | Nolan Isaac Johnston | tony@stabileelectric.com | (916) 955 5818 | Electricians | Loomis · Placer County | — | — |
| Stacy R Wicks | Stacy R Wicks | — | (916) 622 6500 | Other | Granite Bay · Placer County | — | — |
| Staev Floors | Staev Floors | — | (916) 247 3573 | Other | Roseville · Placer County | — | — |
| Stamas Corporation | Paul Zachary Stamas | — | (916) 783 0330 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Stan Mor Floor Coverings | Stan Mor Floor Coverings | — | (916) 997 2831 | Other | Lincoln · Placer County | — | — |
| Stan Thornsberry Const | Stan Thornsberry Const | — | (530) 263 0605 | Other | Auburn · Placer County | — | — |
| Stan Wilson Plastering INC | Stanley Michael Wilson | — | (916) 296 4147 | Other | Auburn · Placer County | — | — |
| Standard Air Co | Betsy Deann Healing | — | (530) 906 0222 | HVAC | Applegate · Placer County | — | — |
| Stanfill Homes And Construction | Kenneth Wade Stanfill | — | (916) 425 6759 | GC, remodel, ADU | Loomis · Placer County | — | — |
| Star Wallcovering | Star Wallcovering | — | (916) 878 9155 | Other | Rocklin · Placer County | — | — |
| Starbuck Construction | Virgil G Starbuck | — | (916) 531 3050 | GC, remodel, ADU | Granite Bay · Placer County | — | — |
| Starrh Tile | Starrh Tile | — | (530) 613 5653 | Other | Rocklin · Placer County | — | — |
| Starwood Building Solutions LLC | Adam Hamid Noorani | — | (916) 692 8554 | GC, remodel, ADU | Loomis · Placer County | — | — |
| Stat Electric | Donald Clark Hartman | — | (916) 884 4825 | Electricians | Lincoln · Placer County | — | — |
| States Plumbing And Drain | States Plumbing And Drain | — | (916) 543 8450 | Other | Roseville · Placer County | — | — |