| Stater Bros. Markets | Stater Bros. Markets | — | (760) 943-7738 | Pest, tile roofs | Encinitas · Shasta County | — | — |
| Steelhead Constructors Associates | Justin Wayne Babcock | — | (530) 226 6400 | Other | Palo Cedro · Shasta County | — | — |
| Steelhead Constructors INC | Kevin Marc Ramstrom | estimating@steelheadconstructors.com | (530) 226 6400 | Other | Palo Cedro · Shasta County | — | — |
| Steelhead Constructors Jv | Constructors INC Steelhead | — | (530) 266 6400 | Other | Palo Cedro · Shasta County | — | — |
| Stephens Electrical INC | Eric Lynn Stephens | — | (530) 222 8433 | Electricians | Redding · Shasta County | — | — |
| Stephens Painting | Stephens Painting | — | (530) 223 5801 | Windows, patio, painters | Redding · Shasta County | — | — |
| Steve Beaton Plumbing | Stephen Jon Beaton | — | (530) 515 2225 | Other | Redding · Shasta County | — | — |
| Steve Boban Homes | Steve Boban Homes | — | (530) 440 9854 | Other | Redding · Shasta County | — | — |
| Steve Cooper Construction | Steve Cooper Construction | — | (909) 260-7261 | GC, remodel, ADU | Big Bear · Shasta County | — | — |
| Steve Cox Concrete INC | Steve Arthur Cox | — | (530) 347 0502 | Other | Cottonwood · Shasta County | — | — |
| Steve Grela Construction | Steven Richard Grela | — | (530) 356 6065 | GC, remodel, ADU | Anderson · Shasta County | — | — |
| Steve Manning Construction INC | Arlene Terese Litsey | — | (530) 222 0810 | Other | Redding · Shasta County | — | — |
| Steve R Huebner | Steve R Huebner | — | (714) 318 6875 | GC, remodel, ADU | Anderson · Shasta County | — | — |
| Steve Stelters H V A C Service | Stephen C Stelter | — | (530) 319 3232 | HVAC | Redding · Shasta County | — | — |
| Steven A Francis Painting & Decorating | Steven Anthony Francis | — | (530) 247 7559 | Windows, patio, painters | Redding · Shasta County | — | — |
| Steven J Harvey Construction | Steven Jay Harvey | — | (530) 357 4514 | GC, remodel, ADU | Anderson · Shasta County | — | — |
| Steven Nye Moseman | Steven Nye Moseman | — | (530) 547 3426 | GC, remodel, ADU | Palo Cedro · Shasta County | — | — |
| Steven Sylvester Roofing Incorporated | Steven Charles Sylvester | — | (530) 547 3303 | Other roofers | Palo Cedro · Shasta County | — | — |
| Steven Woodlief Plastering INC | Steven Leroy Woodlief | — | (530) 515 4941 | Other | Cottonwood · Shasta County | — | — |
| Stewart Door Service | Monte Allen Stewart | info@indiantypefoundry.com | (530) 605 8194 | Other | Cottonwood · Shasta County | — | — |
| Stewart Electrical Services | Craig Vincent Stewart | stewartelectrical@gmail.com | (530) 244 3333 | Electricians | Cottonwood · Shasta County | — | — |
| Stillwater Construction INC | Kylen Mykal Archibald | — | (530) 638 6226 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Stimpel - Wiebelhaus Associates INC | Corkey Forest Harmon | — | (530) 223 6605 | Other | Redding · Shasta County | — | — |
| Stockton Landscape And Gardening Service | Justin Lance Stockton | — | (831) 601 6776 | Windows, patio, painters | Bella Vista · Shasta County | — | — |
| Stone's Tile & Marble | Stone's Tile & Marble | — | (707) 337 1953 | Other | Cottonwood · Shasta County | — | — |
| Stonebridge Developers | Jeremy Shain Rosten | fpeterson@stonebridgedev.net | (530) 222 8228 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Stowers Construction | Michael Forrest Stowers | — | (530) 224 1726 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Strathman Excavating INC | Kenneth Lee Strathman | info@strathmanexcavating.com | (530) 941 4080 | Other | Redding · Shasta County | — | — |
| Stsystems INC | Aaron Ellis Harper | — | (530) 241 3650 | Other | Redding · Shasta County | — | — |
| Summit Flooring & Installations | Summit Flooring & Installations | — | (530) 515 6678 | Other | Redding · Shasta County | — | — |
| Summit Plumbing | Summit Plumbing | — | (530) 223 5116 | Other | Oak Run · Shasta County | — | — |
| Summit Plumbing & Engineering INC | Allen Bryce Gutierrez | — | (530) 223 5116 | Other | Oak Run · Shasta County | — | — |
| Sunblockers INC | Mary Suzanne Audino | — | (530) 244 1995 | Other | Redding · Shasta County | — | — |
| Sundial Concrete | Sundial Concrete | — | (530) 524 1626 | Other | Redding · Shasta County | — | — |
| Sunrise Excavating | John Ross Williams | — | (530) 246 8933 | Other | Redding · Shasta County | — | — |
| Sunrise Roofing | Robby William Schanuth | micah@micahrich.com | (530) 243 8210 | Other roofers | Redding · Shasta County | — | — |
| Sunseri Painting | Sunseri Painting | — | (408) 426 1556 | Windows, patio, painters | Shasta Lake · Shasta County | — | — |
| Sunset Koi | Sunset Koi | — | (530) 365 5151 | Windows, patio, painters | Redding · Shasta County | — | — |
| Sunset Mechanical | Sunset Mechanical | — | (530) 549 5400 | HVAC | Redding · Shasta County | — | — |
| Sunshine Floorcoverings | Sunshine Floorcoverings | — | (530) 227 6743 | Other | Redding · Shasta County | — | — |