| Scott Toews | Scott Toews | — | (530) 520 5032 | GC, remodel, ADU | Artois · Glenn County | — | — |
| Scott Trammel | Scott Trammel | — | (530) 520 1919 | Other | Orland · Glenn County | — | — |
| Scotty's Electric Motor Repair INC | Scotty Durelle Madden | — | (530) 865 3737 | Other | Orland · Glenn County | — | — |
| Snyder & Sons Plumbing LLC | Clyde James Snyder | — | (530) 865 7530 | Other | Orland · Glenn County | — | — |
| So Cal Termite Solutions | So Cal Termite Solutions | — | (626) 221-2391 | Pest, tile roofs | Temple City · Glenn County | — | — |
| Songbird Landscaping | Songbird Landscaping | info@songbirdlandscaping.com | (530) 517 0713 | Windows, patio, painters | Glenn · Glenn County | — | — |
| Soprano Construction | Echeverria Fernando Macias | — | (530) 570 8794 | GC, remodel, ADU | Orland · Glenn County | — | — |
| St Louis Cabinetry | St Louis Cabinetry | — | (530) 520 0272 | Other | Orland · Glenn County | — | — |
| Steve Halsey Electric | Steven Reed Halsey | — | (530) 520 1603 | Electricians | Orland · Glenn County | — | — |
| Stoney Creek Production | Donald Eugene Taresh | — | (530) 228 4292 | Other | Orland · Glenn County | — | — |
| Stony Creek General Engineering | Stony Creek General Engineering | — | (530) 526 3191 | Other | Orland · Glenn County | — | — |
| Stronghold Construction | Tyler Jess Sawyer | — | (530) 570 9262 | GC, remodel, ADU | Orland · Glenn County | — | — |
| Sullivan Drilling INC | Patrick J Bixby | — | (530) 865 0737 | Other | Orland · Glenn County | — | — |
| Sunquest Pools Pool And Spa Maintenance | Tracy Dave Jantzen | — | (530) 897 5313 | Pool | Orland · Glenn County | — | — |
| Sunrise Landscape | Sunrise Landscape | info@sunriselandscape.com | (530) 517 1567 | Windows, patio, painters | Willows · Glenn County | — | — |
| Sunset Landscapes | Sunset Landscapes | — | (530) 966 6878 | Windows, patio, painters | Orland · Glenn County | — | — |
| T B A Construction | Lino Martinez Rodriguez | — | (530) 592 9433 | GC, remodel, ADU | Orland · Glenn County | — | — |
| T D Construction | Laird Todd Eickmeyer | — | (530) 570 5118 | GC, remodel, ADU | Willows · Glenn County | — | — |
| Techpro Heating & Cooling | Techpro Heating & Cooling | — | (650) 275-6357 | HVAC | San Carlos · Glenn County | — | — |
| Tice & Bolinger Electrical | Charles Albert Jr Tice | — | (530) 518 8655 | Electricians | Orland · Glenn County | — | — |
| Titus Construction INC | Ben Aurthur Titus | — | (530) 517 2172 | GC, remodel, ADU | Glenn · Glenn County | — | — |
| Todd Pfyl Excavating | Todd Pfyl Excavating | — | (530) 961 2611 | Other | Artois · Glenn County | — | — |
| Tom Combs Construction | Tommy Ladon Combs | — | (530) 624 3030 | GC, remodel, ADU | Orland · Glenn County | — | — |
| Tony Tapia Construction | Antonio Armando Tapia | — | (530) 518 2025 | GC, remodel, ADU | Willows · Glenn County | — | — |
| True North Plumbing LLC | Kody Robert Royce | — | (530) 680 1970 | Other | Orland · Glenn County | — | — |
| Us Window & Door - Carlsbad | Us Window & Door - Carlsbad | — | (760) 621-5505 | Windows, patio, painters | Carlsbad · Glenn County | — | — |
| Vasquez Flooring | Vasquez Flooring | — | (530) 520 7428 | Other | Orland · Glenn County | — | — |
| Vasquez Painting | Vasquez Painting | — | (530) 680 0413 | Windows, patio, painters | Willows · Glenn County | — | — |
| Vise Company INC | Josh Alan Beaver | — | (530) 514 1432 | Other | Orland · Glenn County | — | — |
| Warren's Plumbing | Warren's Plumbing | — | (530) 720 7149 | Other | Willows · Glenn County | — | — |
| Water Damage Removal And Restoration - Flood Service Pro | Water Damage Removal And Restoration - Flood Service Pro | — | (949) 782-6071 | Restoration | Laguna Niguel · Glenn County | — | — |
| Western Ready Mix | William Keith Graham | — | (530) 865 9668 | Other | Orland · Glenn County | — | — |
| Westwood Construction Services INC | Emmanuel Nmn Valdiviamorales | — | (530) 517 2259 | GC, remodel, ADU | Orland · Glenn County | — | — |
| Whitney Construction | Charles Leon Whitney | — | (530) 968 5129 | Other | Orland · Glenn County | — | — |
| William J Murry Construction | William Joseph Iii Murry | — | (530) 517 1551 | GC, remodel, ADU | Willows · Glenn County | — | — |
| Willows Refrigeration | Willows Refrigeration | — | (530) 517 3802 | HVAC | Willows · Glenn County | — | — |
| Wise Refrigeration | Wise Refrigeration | — | (530) 635 4918 | HVAC | Willows · Glenn County | — | — |
| Wyllie And Son | John Clarke Sr Wyllie | — | (530) 864 3901 | GC, remodel, ADU | Willows · Glenn County | — | — |
| Yardscapes | Dean Milton Martin | — | (530) 520 3396 | Windows, patio, painters | Willows · Glenn County | — | — |