| Shameless Design | Shameless Design | — | (510) 326 4517 | GC, remodel, ADU | Walnut Creek · Contra Costa County | — | — |
| Shamrock Floor Covering INC | Francisco Aguayo | — | (925) 550 8488 | Other | Concord · Contra Costa County | — | — |
| Shamrock Pool Fiberglass INC | Tamara Ann O'loughlin | — | (925) 284 7401 | Pool | Lafayette · Contra Costa County | — | — |
| Shanahan Bennett Corporation | Christopher Richard Shanahan | — | (925) 595 3870 | HVAC | Pacheco · Contra Costa County | — | — |
| Shane W Smiley Plumbing | Shane W Smiley Plumbing | — | (925) 382 2338 | Other | Pleasant Hill · Contra Costa County | — | — |
| Shanks Painting Co | Lawrence Calvin Shanks | shankspainting@gmail.com | (510) 932 6319 | Windows, patio, painters | Richmond · Contra Costa County | — | — |
| Shannon Tileworks | Shannon Tileworks | — | (925) 305 7916 | Other | Brentwood · Contra Costa County | — | — |
| Shape Construction | Abel S Maglalang | — | (925) 239 2280 | GC, remodel, ADU | Danville · Contra Costa County | — | — |
| Shape Construction Co | Garshasbi Vahid | — | (925) 323 3048 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Sharam Azghadi | Sharam Azghadi | — | (310) 773 6896 | Electricians | Lafayette · Contra Costa County | — | — |
| Shaver Trucking And Excavating INC | Dyana Marie Shaver | — | (925) 852 8714 | Other | Brentwood · Contra Costa County | — | — |
| Shawn L Donovan | Shawn L Donovan | — | (925) 699 3442 | Other | Concord · Contra Costa County | — | — |
| Shawn Lober Construction LLC | Teddy Eugene Young | — | (925) 949 8365 | GC, remodel, ADU | Danville · Contra Costa County | — | — |
| Shawn R Swope | Shawn R Swope | — | (925) 705 0887 | GC, remodel, ADU | Walnut Creek · Contra Costa County | — | — |
| Shayam Gonsalves DBA A And D Radiant & Plumbing Tech | Shayam Luke Gonsalves | — | (925) 270 5487 | Other | Concord · Contra Costa County | — | — |
| Sheeno General Construction | Diane C Riise | — | (925) 355 9550 | GC, remodel, ADU | San Ramon · Contra Costa County | — | — |
| Sheets Renovation Masters LLC DBA Five Star Bath Solutions Of | Phillip John Mc Intyre | — | (925) 494 2264 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Sheldon Santos | Sheldon Santos | — | (209) 662 2145 | Windows, patio, painters | Antioch · Contra Costa County | — | — |
| Shell Beach Design Build INC | Jeffrey Peter Stangeland | — | (707) 200 1010 | GC, remodel, ADU | Kensington · Contra Costa County | — | — |
| Sherwood Electric INC | Robert Gerard Sherwood | — | (925) 625 5271 | Electricians | Oakley · Contra Costa County | — | — |
| Shewmaker Painting Company | Aaron David Shewmaker | — | (925) 448 0509 | Windows, patio, painters | Walnut Creek · Contra Costa County | — | — |
| Shield Fire & Safety Solutions INC | Hernandez Hector Escamilla | info@shield-fire.com | (877) 520 0003 | Electricians | Concord · Contra Costa County | — | — |
| Shield Of Armor Painting INC | Peter Timothy Wiesendanger | — | (925) 285 6400 | GC, remodel, ADU | Clayton · Contra Costa County | — | — |
| Shk Electric | Khen Sankho | — | (925) 964 6287 | Electricians | Danville · Contra Costa County | — | — |
| Shock-ka Electric INC | Shock-ka Electric INC | — | (702) 561 9144 | Electricians | Pittsburg · Contra Costa County | — | — |
| Shoreline Bay Stone And Tile | Vazquez Edgar Espinoza | — | (510) 375 9980 | Other | Richmond · Contra Costa County | — | — |
| Showroom Construction | Clinton Robert Soltau | — | (510) 919 0235 | GC, remodel, ADU | El Cerrito · Contra Costa County | — | — |
| Shu Sun Poon | Shu Sun Poon | — | (510) 813 0776 | GC, remodel, ADU | San Ramon · Contra Costa County | — | — |
| Shubin Building | Shubin Building | — | (925) 336 1577 | GC, remodel, ADU | San Ramon · Contra Costa County | — | — |
| Shugrue INC | Ho Jung Park | es@shugrue.com | (510) 552 3889 | Windows, patio, painters | Danville · Contra Costa County | — | — |
| Si Construction & Remodeling | Orly Shemtov | — | (925) 494 2525 | GC, remodel, ADU | Walnut Creek · Contra Costa County | — | — |
| Sierra Bay Construction | Daniel Lee Barth | — | (925) 250 7303 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| Sierra Bay Contractors INC | Thomas Albert Seeno | — | (925) 671 7711 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Sierra Builder Service | Sierra-hernandez Leobardo | — | (925) 752 1686 | GC, remodel, ADU | Antioch · Contra Costa County | — | — |
| Sierra Builders Ed Mc Millan | Sierra Builders Ed Mc Millan | — | (925) 686 5352 | GC, remodel, ADU | Pleasant Hill · Contra Costa County | — | — |
| Sierra Concrete | Sierra Concrete | — | (415) 341 6149 | Other | San Pablo · Contra Costa County | — | — |
| Sierra Crest INC | David Wyman Davis | — | (925) 362 8898 | GC, remodel, ADU | Danville · Contra Costa County | — | — |
| Sierra Manor Construction | Edmundo Jr Acosta | — | (310) 872 8330 | GC, remodel, ADU | El Cerrito · Contra Costa County | — | — |
| Sierra Roofing And Solar | Sierra Roofing And Solar | — | (925) 436-1394 | Other roofers | Pleasanton · Contra Costa County | — | — |
| Sierra West Construction Co | Thomas Thatcher Arnold | ed.sierrawest@gmail.com | (925) 684 8900 | GC, remodel, ADU | Bethel Island · Contra Costa County | — | — |