| Service 4 Plumbing INC | Napoleon Mejia Lopez | — | (510) 614 5889 | Other | San Leandro · Alameda County | — | — |
| Service Champions | Steven Lee Cook | — | (925) 444 4444 | HVAC | Pleasanton · Alameda County | — | — |
| Service Experts Heating & Air Conditioning | Christopher Hadon Peterson | — | (469) 724 7648 | HVAC | Livermore · Alameda County | — | — |
| Service Ka LLC | Juan Carlos Galvan Torres | — | (669) 216 0506 | HVAC | Hayward · Alameda County | — | — |
| Service Metal Products INC | Ryan Eckert | benny@servicemetalproducts.com | (510) 568 0888 | Other | Oakland · Alameda County | — | — |
| Service Painting INC | James Jeffrey Dann Young | — | (925) 455 6720 | Windows, patio, painters | Livermore · Alameda County | — | — |
| Service Plastering Ii | Dean Anthony Brown | — | (510) 483 9732 | Other | San Leandro · Alameda County | — | — |
| Service Plus Installations INC | Daniel James Harden | — | (510) 657 6800 | Other | Fremont · Alameda County | — | — |
| Service Rescue INC | Mian Mansoor Ahmed | contactbiz@servicerescue.com | (510) 257 1400 | HVAC | Fremont · Alameda County | — | — |
| Service West INC | Harold Mark Vignoles | info@servicewest.com | (510) 746 3700 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Servicemaster Restoration Services By Ideal Group | Kamran Sefidi | — | (510) 999 9991 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Servpro Of Pleasanton/dublin | Barry Norman Rutherford | — | (925) 426 2302 | Other | Pleasanton · Alameda County | — | — |
| Sesco Electrical INC | Genaro Salas | — | (510) 883 0988 | Electricians | Oakland · Alameda County | — | — |
| Setzekorn Floors | Setzekorn Floors | — | (510) 366 9343 | Other | Fremont · Alameda County | — | — |
| Seunglee Electric Company | Lee Seungjae | — | (510) 557 3174 | Electricians | Hayward · Alameda County | — | — |
| Seventh Avenue Builders | Seventh Avenue Builders | — | (510) 867 7448 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Seville Real Estate & Mgmt INC | Seville Real Estate & Mgmt INC | — | (510) 244-1289 | Property managers | Alameda · Alameda County | — | — |
| Sewer Master INC DBA Sewer Master Engineering INC | Vincent Edward Josep Gaines | — | (510) 385 6539 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Seyo Construction | Pehlic Sead | — | (510) 682 4568 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Sf Coast Side Construction INC | Esteban Manuel Cruz | — | (510) 621 5350 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Sf Electric | Daniel Scott Phillips | — | (510) 634 2695 | Electricians | Livermore · Alameda County | — | — |
| Sf Glass & Mirror INC | Djamal Douzane | — | (510) 625 9905 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Sfba Construction INC | Don Xiangdong Su | — | (650) 867 9606 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Sgv Home Renovation | Sgv Home Renovation | — | (626) 748 6666 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Shabod Construction | Shahbodaghloo Pejmon | — | (510) 365 9699 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Shabod Construction INC | Pejmon Shahbodaghloo | — | (510) 365 9699 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Shada Build & Design INC | Stephen Allen Shada | — | (510) 858 7303 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Shaddle Construction INC | John William Shaddle | — | (510) 414 0119 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Shalco Construction Co INC | Fariborz Fred Mirkhani | — | (415) 725 3337 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Shalom N Home INC | Catarino Antonio Pena Quintanilla | — | (415) 879 0442 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Shames Construction Company Ltd | Carolyn Andrea Shames | — | (925) 606 3000 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Shamrock Development & Construction INC | Ryan Michael Callahan | — | (925) 294 8307 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Shamrockin Electric | David Edward Lodge | info@shamrockinelectric.com | (925) 273 0750 | Electricians | Livermore · Alameda County | — | — |
| Shandong Builders INC | Yu Jie | — | (510) 770 7616 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Shangri - La Builder INC | Eddy Tsz Ching Yuen | — | (415) 315 4948 | HVAC | Dublin · Alameda County | — | — |
| Shapland Electric INC | Randall Scott Shapland | — | (925) 685 6313 | Electricians | Pleasanton · Alameda County | — | — |
| Sharkaire | Kadir Oguz Kaya | info@sharkaire.com | (510) 788 3707 | HVAC | Dublin · Alameda County | — | — |
| Sharp Glass INC | Jacob Heru Moffett | — | (415) 813 8030 | Windows, patio, painters | Dublin · Alameda County | — | — |
| Sharper Construction & Development INC | Lee Allen Scott | — | (510) 714 6476 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Sharper Development LLC | Keyan Akbarieh | — | (925) 818 9744 | GC, remodel, ADU | Berkeley · Alameda County | — | — |