| Slatter Built Construction LLC | Rock Matthew Slatter | — | (916) 276 2729 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Smile You're Home Landscaping & Maintenance | Parrazal Jorge | — | (530) 308 0597 | Windows, patio, painters | Truckee · Nevada County | — | — |
| Smiley Electric | Louis James Smiley | — | (916) 501 9451 | Electricians | Grass Valley · Nevada County | — | — |
| Smith & Moen Construction LLC | Ronald Russell Moen | smithmoenconstructionllc@gmail.com | (530) 277 0634 | GC, remodel, ADU | Penn Valley · Nevada County | — | — |
| Smith Built Construction | Lars Bersvend Smith | — | (530) 205 0996 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Snow Fool Enterprises INC | Steven Bancroft Davis | — | (530) 414 5584 | HVAC | Truckee · Nevada County | — | — |
| Snow Removal Solutions | Snow Removal Solutions | — | (530) 448 3684 | Other | Truckee · Nevada County | — | — |
| Sola System INC | Richard Ian Williams | — | (530) 305 5851 | Electricians | Nevada City · Nevada County | — | — |
| Solace Graphics | Solace Graphics | ken@solacegraphics.com | (530) 477 9966 | Other | Grass Valley · Nevada County | — | — |
| Sonny Joe Austin DBA Sarah's Air | Sarah's Air | — | (530) 328 1229 | HVAC | Grass Valley · Nevada County | — | — |
| Sotelo Construction | Morales Fernando Sotelo | — | (530) 386 4935 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| South Fork Home Services LLC | Ryan Charles Srp | — | (916) 521 2925 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Southwest Heating | Southwest Heating | — | (530) 277 4328 | HVAC | Truckee · Nevada County | — | — |
| Sparke Robinson Landscapes | Sparke Robinson Landscapes | — | (530) 575 8278 | Windows, patio, painters | Grass Valley · Nevada County | — | — |
| Sparta Painting | Sparta Painting | sparta1painting@gmail.com | (530) 210 8642 | Windows, patio, painters | Penn Valley · Nevada County | — | — |
| Spe Painting | Shawn Eric Pettigrove | spepainting@hotmail.com | (530) 414-4794 | Windows, patio, painters | Truckee · Nevada County | — | — |
| Spectrum Painting | Spectrum Painting | info@spectrum-painting.com | (530) 240 5950 | Windows, patio, painters | Penn Valley · Nevada County | — | — |
| Specwest Developers INC | Kirk Thomas Mc Guire | — | (530) 913 9100 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Spencer Construction | Richard Allan Spencer | — | (530) 308 2373 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Spingola Electric INC | Kyle James Spingola | — | (925) 338 2195 | Electricians | Nevada City · Nevada County | — | — |
| Sta - Bull Fence INC | Lamarche Peter | info@stabullfence.com | (530) 885-7303 | Other | Grass Valley · Nevada County | — | — |
| Stal Tre Hus INC | Jon Allan Traeger | — | (530) 277 7572 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Stan Roose Construction | Stanley Eugene Roose | — | (650) 464 3157 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Starbright Services | George Robert Watson | — | (530) 277 0989 | Electricians | Grass Valley · Nevada County | — | — |
| Starkey Construction & Development | Eric Robert Starkey | — | (530) 277 3123 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Stephen Kohlbeck Landscaping | Stephen Kohlbeck Landscaping | — | (530) 906 8548 | Windows, patio, painters | Grass Valley · Nevada County | — | — |
| Stephen M Batie Plumbing | Stephen M Batie Plumbing | — | (775) 742 8616 | Other | Truckee · Nevada County | — | — |
| Steve Cannon Paper Hanging | Steve Cannon Paper Hanging | — | (530) 687 2016 | Other | Grass Valley · Nevada County | — | — |
| Steve Ryan Const | Steve Ryan Const | — | (530) 308 4123 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Steve's Electrical Service | Corrales Stephen | — | (530) 414 8333 | Electricians | Truckee · Nevada County | — | — |
| Steven B Davis | Steven B Davis | — | (530) 587 7061 | HVAC | Truckee · Nevada County | — | — |
| Steven Bennett Construction INC | Steve Lloyd Bennett | — | (530) 263 7605 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Steven D Claar | Steven D Claar | — | (530) 913 5937 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Steven Elmore Construction | Steven Jon Elmore | — | (530) 575 7574 | GC, remodel, ADU | Rough And Ready · Nevada County | — | — |
| Steven Torres Construction | Steven John Torres | — | (707) 696 1503 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Stevens Grading | Stevens Grading | — | (530) 368 0122 | Other | Grass Valley · Nevada County | — | — |
| Stewart Drywall INC | Paul Arthur Stewart | — | (519) 701-0079 | Other | Truckee · Nevada County | — | — |
| Still Blacktop Paving LLC | Chadwick James Weedman | — | (530) 308 3584 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Still Custom Woodworking | Still Custom Woodworking | — | (530) 635 5714 | Other | Nevada City · Nevada County | — | — |
| Stonehedge Tile And Granite | Robert Carl Chadwick | — | (530) 913 6489 | Other | Grass Valley · Nevada County | — | — |