| Shearman Builders INC | Michael David Clark | office@shearmanbuilders.com | (510) 355 3838 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Shearman Construction LLC | Michael David Clark | — | (510) 355 3838 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Shedmania | Insang Song | — | (510) 458 1881 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Sheehan Painting And Decorating | Sheehan Painting And Decorating | — | (925) 487 4141 | Windows, patio, painters | Livermore · Alameda County | — | — |
| Sheets Designs | Sheets Designs | — | (707) 529 8177 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Shelley Q Allen | Shelley Q Allen | — | (530) 514 8064 | Other | Oakland · Alameda County | — | — |
| Shelter Builders | Shelter Builders | — | (510) 714 0755 | Other roofers | Berkeley · Alameda County | — | — |
| Shelter Builders INC | John Dalzell | — | (510) 714 0755 | Other roofers | Berkeley · Alameda County | — | — |
| Shen Yizhou | Shen Yizhou | — | (925) 209 9323 | GC, remodel, ADU | Newark · Alameda County | — | — |
| Sherman D Balch | Sherman D Balch | — | (925) 353 6347 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Sherman Roofing | Thomas Walter Sherman | — | (925) 443 7663 | Other roofers | Livermore · Alameda County | — | — |
| Shi Jie Xue | Shi Jie Xue | — | (415) 632 7535 | Electricians | San Lorenzo · Alameda County | — | — |
| Shi Zhou Construction Company | Zhou Shi E | — | (510) 325 1702 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Shine Painting INC | Simon Chul Shin | contact@sansoxygen.com | (510) 324 3222 | Windows, patio, painters | Newark · Alameda County | — | — |
| Shing Chu Lo | Shing Chu Lo | — | (510) 906 6595 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Shooter & Butts INC | Jamie Renae Matthews | — | (925) 460 5155 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Shooting Star Pro Painting And Decorating | Gonzalez Garcia Arturo | — | (510) 485 8677 | Windows, patio, painters | Fremont · Alameda County | — | — |
| Shortbar INC | David Robert Albrecht | — | (510) 901 0863 | Electricians | Oakland · Alameda County | — | — |
| Showcomm | Richard Allen Showaker | — | (650) 580 8903 | Other | Castro Valley · Alameda County | — | — |
| Shu Liu | Shu Liu | — | (510) 928 1777 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Si Construction & Remodeling | Si Construction & Remodeling | — | (800) 434-1545 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Sibley Painting And Restoration | Sibley Painting And Restoration | — | (510) 772 2753 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Sierra Landscape | Sierra Landscape | — | (510) 207 5072 | Windows, patio, painters | Livermore · Alameda County | — | — |
| Sierra Roofing And Solar INC | Jeffrey David Basch | — | (925) 803 1601 | Other roofers | Dublin · Alameda County | — | — |
| Sierra's Hd Demolition INC | Albert Marin | — | (510) 390 6495 | Other | Oakland · Alameda County | — | — |
| Sigma HVAC & Electric INC | Hao Wu | — | (650) 868 7766 | HVAC | Castro Valley · Alameda County | — | — |
| Sign Co U S A | Kevin Michael Emkjer | — | (510) 848 7446 | Other | Berkeley · Alameda County | — | — |
| Signal Heating & Air Conditioning | Moses Michael Herrera | — | (925) 371 0122 | HVAC | Livermore · Alameda County | — | — |
| Signature Builds By Mh | Signature Builds By Mh | — | (510) 305 6948 | GC, remodel, ADU | San Lorenzo · Alameda County | — | — |
| Signature Development Group INC | David Scott Miller | interested@domainmarket.com | (510) 251 9270 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Signature Flooring & Design INC DBA Signature Carpet One | John Lawrence Iv Shea | — | (510) 651 9494 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Signature Homes INC | James Charles Ghielmetti | — | (925) 463 1122 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Signawest Systems INC | Ronald John Kunkel | — | (510) 795 9999 | Electricians | Newark · Alameda County | — | — |
| Signfast INC | Anthony Willis Esparza | — | (925) 828 4561 | Other | Dublin · Alameda County | — | — |
| Silicon Valley Plumbing Services | Larios Correa Frank | — | (650) 701 6419 | Other | Newark · Alameda County | — | — |
| Silman Industries | Rick Gareth Silva | — | (510) 347 4800 | Electricians | San Leandro · Alameda County | — | — |
| Silman Services Incorporated | Thomas Roger Mangin | — | (925) 513 1139 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Silmar Flooring | David Manuel Silva | — | (925) 846 7600 | Other | Pleasanton · Alameda County | — | — |
| Silva Construction | Carlos Enrique Silva Jacinto | — | (510) 453 5723 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Silva James P Construction INC | James Pacheco Jr Silva | — | (510) 755 3008 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |