| Shane Hughes Construction Incorporated | Shane Robert Hughes | — | (530) 605 3617 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Shane Obrien Construction-partnership | Daniel James Adams | — | (530) 356 0795 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Shane Rodriguez Construction | Shane Israel Rodriguez | — | (530) 941 7397 | GC, remodel, ADU | Shingletown · Shasta County | — | — |
| Sharrett Construction | Craig Allen Sharrett | — | (530) 339 1049 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Shasta Asphalt Seal & Stripe | Shasta Asphalt Seal & Stripe | — | (530) 515 3358 | Other | Anderson · Shasta County | — | — |
| Shasta Builders Exchange | Shasta Builders Exchange | — | (530) 221-5556 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Shasta Building Supply LLC | Samuel Paul Dawson | info@shastabuildingsupply.com | (530) 215 3118 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Shasta Construction | Karen Ilene Margrave | — | (530) 440 5959 | GC, remodel, ADU | Anderson · Shasta County | — | — |
| Shasta Control Company | Kent Lee Flowers | — | (530) 605 4117 | HVAC | Redding · Shasta County | — | — |
| Shasta County Septic Services | Zachary Anthony Ray | — | (530) 356 1990 | Other | Shasta · Shasta County | — | — |
| Shasta Drilling INC | Michael James Colbert | — | (530) 229 9120 | Other | Redding · Shasta County | — | — |
| Shasta Energy And Electric | Dustin Patrick Graves | — | (530) 238 0983 | Electricians | Cassel · Shasta County | — | — |
| Shasta Fencing | Shasta Fencing | — | (530) 515 5679 | Other | Anderson · Shasta County | — | — |
| Shasta Garage Doors And Repair INC | Michael Anthony Beursken | — | (530) 605 2445 | Other | Redding · Shasta County | — | — |
| Shasta Heating & Air Conditioning INC | Cory Ralph Foster Burns | — | (530) 247 5639 | HVAC | Redding · Shasta County | — | — |
| Shasta HVAC Specialists INC | Matthew Christopher Orr | — | (530) 221 7455 | HVAC | Redding · Shasta County | — | — |
| Shasta Interiors | Shasta Interiors | — | (530) 524 7776 | Other | Redding · Shasta County | — | — |
| Shasta Lake Floors By Pete Corcoran & Family | Joy Ann Corcoran | — | (530) 275 8530 | Other | Shasta Lake · Shasta County | — | — |
| Shasta Lake Painting | Shasta Lake Painting | — | (530) 356 7268 | Windows, patio, painters | Redding · Shasta County | — | — |
| Shasta Lane Apartments | Shasta Lane Apartments | — | (619) 304-4817 | Property managers | La Mesa · Shasta County | — | — |
| Shasta Low Voltage Integrations | Michael Gerard Gavette | — | (530) 710 1017 | Other | Anderson · Shasta County | — | — |
| Shasta Painters | Shasta Painters | — | (209) 649-1718 | Windows, patio, painters | Manteca · Shasta County | — | — |
| Shasta Plastering INC | Tommy Glen Cravens | — | (530) 355 8159 | Other | Redding · Shasta County | — | — |
| Shasta Quality | Shasta Quality | — | (530) 244 7473 | HVAC | Redding · Shasta County | — | — |
| Shasta Real Estate Group | Shasta Real Estate Group | brett@shastarealestategroup.com | (530) 926-3807 | Property managers | Mt Shasta · Shasta County | — | — |
| Shasta Roofing | Shasta Roofing | — | (530) 290-6183 | Other roofers | Redding · Shasta County | — | — |
| Shasta Shed Company | Aaron Charles Knapp | — | (530) 340 1924 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Shasta Summit Properties | Shasta Summit Properties | — | (530) 926-1038 | Property managers | Mt Shasta · Shasta County | — | — |
| Shasta Surveillance | Shasta Surveillance | — | (530) 351-4125 | Alarm and generators | Redding · Shasta County | — | — |
| Shasta Tehama Rental Properties | Shasta Tehama Rental Properties | — | (707) 349-8742 | Property managers | Red Bluff · Shasta County | — | — |
| Shasta Tub Works | Shasta Tub Works | gavigansr@gmail.com | (530) 275 2762 | Other | Shasta Lake · Shasta County | — | — |
| Shasta Valley Painting | Shasta Valley Painting | contact@sansoxygen.com | (530) 605 1078 | Windows, patio, painters | Redding · Shasta County | — | — |
| Shasta Wood Products | Thomas Michael Aboud | — | (530) 378 6880 | Other | Cottonwood · Shasta County | — | — |
| Shastco Drywall | Shastco Drywall | — | (530) 209 8055 | Other | Shasta Lake · Shasta County | — | — |
| Shaun Lusk Construction | Shaun Murphy Lusk | — | (530) 355 6227 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Shawn Allen Kane | Shawn Allen Kane | — | (530) 410 1149 | Other | Millville · Shasta County | — | — |
| Shawn Robert Farpella Construction | Shawn Robert Farpella | — | (530) 255 0891 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Sheats Construction | Gordon Merrill Jr Sheats | — | (530) 925 1751 | GC, remodel, ADU | Shasta Lake · Shasta County | — | — |
| Shell Wright Low Voltage Integrator | Shell Wright Low Voltage Integrator | — | (530) 227 8642 | Other | Redding · Shasta County | — | — |
| Shepherds Cabinets | Shepherds Cabinets | — | (530) 355 8758 | Other | Anderson · Shasta County | — | — |