| S D C Construction | Seth Daniel Condit | — | (530) 680 9450 | Electricians | Chico · Butte County | — | — |
| S G B Custom Painting | Scott Gerald Bernhardt | — | (530) 343 1246 | GC, remodel, ADU | Chico · Butte County | — | — |
| S L S Landscaping | Sergey Pavlovich Plugovoy | — | (916) 834 9859 | Windows, patio, painters | Oroville · Butte County | — | — |
| S N L Construction | Scott David Coffer | — | (530) 370 2433 | GC, remodel, ADU | Oroville · Butte County | — | — |
| S R M Contracting | Stephen Roy Midkiff | sean.markee@srmcontracting.com | (530) 218 0733 | GC, remodel, ADU | Yankee Hill · Butte County | — | — |
| Sal Rodriguez Landscapes LLC | Salvador Medrano Rodriguez | — | (530) 532 9303 | Windows, patio, painters | Oroville · Butte County | — | — |
| Salsbury Construction | Kevin Mark Salsbury | — | (530) 513 0447 | GC, remodel, ADU | Magalia · Butte County | — | — |
| Sam Leaf Construction | Samuel James Leaf | — | (530) 518 2230 | GC, remodel, ADU | Chico · Butte County | — | — |
| Sam Weathers Welding | Sam Weathers Welding | — | (530) 520 6924 | Other | Chico · Butte County | — | — |
| San Francisco Glass | San Francisco Glass | — | (415) 749 0500 | Windows, patio, painters | Chico · Butte County | — | — |
| Sanders Construction | Andrew James Sanders | — | (530) 321 5226 | GC, remodel, ADU | Paradise · Butte County | — | — |
| Sandoval Residential Construction INC | Jesus Jr Sandoval | — | (530) 230 7712 | GC, remodel, ADU | Chico · Butte County | — | — |
| Sanford And Sons Mechanical Services | Barney James Sanford | — | (925) 625 4822 | HVAC | Chico · Butte County | — | — |
| Santi Construction | Eagleman Evan Santi | entreprise@santi-construction.com | (530) 591 3987 | GC, remodel, ADU | Chico · Butte County | — | — |
| Santos Excavating INC | George Anthony Santos | — | (530) 894 2274 | Other | Chico · Butte County | — | — |
| Sashaluna LLC DBA Mr Rooter Plumbing Of Northern California | Gordon Everett Gibbons | — | (530) 342 9000 | Other | Chico · Butte County | — | — |
| Sassen Construction | Lee William Sassen | — | (707) 479 0952 | GC, remodel, ADU | Oroville · Butte County | — | — |
| Scc Concrete | Scc Concrete | — | (530) 979 0553 | GC, remodel, ADU | Chico · Butte County | — | — |
| Sch Construction | Seque Caley Harrison | — | (530) 513 9475 | GC, remodel, ADU | Chico · Butte County | — | — |
| Schafer Plumbing | Schafer Plumbing | — | (530) 552 7945 | Other | Paradise · Butte County | — | — |
| Schreder & Brandt Mfg INC | Seward Lee Schreder | — | (530) 899 1104 | GC, remodel, ADU | Chico · Butte County | — | — |
| Schukei Roofing | Justin Edward Schukei | schukeiroofing@yahoo.com | (530) 520 0338 | Other roofers | Chico · Butte County | — | — |
| Schuster Homes | Schuster Homes | — | (530) 570 6400 | GC, remodel, ADU | Chico · Butte County | — | — |
| Schwab Construction | Zacheriah Joseph Schwab | — | (530) 570 0769 | GC, remodel, ADU | Oroville · Butte County | — | — |
| Scm General Contractor | Alfred John Howard | — | (530) 513 8003 | GC, remodel, ADU | Chico · Butte County | — | — |
| Scott Armstrong Enterprises INC | Scott William Armstrong | — | (530) 342 5533 | GC, remodel, ADU | Chico · Butte County | — | — |
| Scott's Painting & Maintenance | Scott's Painting & Maintenance | — | (530) 990 1007 | Windows, patio, painters | Oroville · Butte County | — | — |
| Scotty's Plumbing | Scotty's Plumbing | — | (530) 720 4824 | Other | Magalia · Butte County | — | — |
| Scribner Donald Lewis | Scribner Donald Lewis | — | (530) 315 3946 | GC, remodel, ADU | Biggs · Butte County | — | — |
| Scribner's Construction | Donald Lewis Scribner | — | (530) 315 9668 | GC, remodel, ADU | Biggs · Butte County | — | — |
| Seamless Construction | Jacob Matthew Miller | — | (520) 228 0112 | GC, remodel, ADU | Magalia · Butte County | — | — |
| Sean Bandstra Construction | Sean Andre Bandstra | — | (530) 828 7561 | GC, remodel, ADU | Oroville · Butte County | — | — |
| Secrist Pools | Secrist Pools | — | (530) 673 2677 | Pool | Chico · Butte County | — | — |
| Seeley Construction Company | Timothy Carl Seeley | — | (707) 486 8288 | GC, remodel, ADU | Chico · Butte County | — | — |
| Sei Enterprises | Santillan Guillermo | — | (530) 434 0454 | Other | Biggs · Butte County | — | — |
| Selig Construction Corporation | Mathew Scott Selig | — | (530) 893 5898 | GC, remodel, ADU | Chico · Butte County | — | — |
| Serrao Concrete | Jess Alan Serrao | — | (530) 592 9157 | GC, remodel, ADU | Chico · Butte County | — | — |
| Serratos Painting | Serratos Painting | — | (530) 353 1055 | Windows, patio, painters | Oroville · Butte County | — | — |
| Shannon Howard's Custom Construction | Shannon James Howard | — | (530) 514 7823 | GC, remodel, ADU | Paradise · Butte County | — | — |
| Sharon's Painting Service | Sharon Denise Meyers | — | (530) 514 8185 | Windows, patio, painters | Paradise · Butte County | — | — |