| Summit A V & Automation INC | Joshua Vincent Cortes | joshcortes36@gmail.com | (925) 738 8825 | Other | Livermore · Alameda County | — | — |
| Summit Construction | Hwa Sung Chong | — | (510) 909 6300 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Summit Fireplace & Grills | Edward Michael Humphrey | — | (510) 397 6506 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Summitteers Construction INC | Bruce Henry Mc Leod | — | (510) 482 2202 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Sun Bay Costruction | Sun Bay Costruction | — | (408) 916 6818 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Sun Blinds Us INC | Gurpreet Singh | — | (916) 538 9934 | Other | Fremont · Alameda County | — | — |
| Sun Construction | Sun Bo Chung | — | (510) 377 1810 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Sun East Construction INC | Zhiming Guo | — | (510) 689 7860 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Sun Graphics | David Charles Farrar | — | (510) 713 7500 | Other | Newark · Alameda County | — | — |
| Sun Kee Construction | Steve Phun Luong | — | (510) 882 9822 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Sun Light & Power | William Allen Harrod | — | (510) 845 2997 | Electricians | Berkeley · Alameda County | — | — |
| Sun Light & Power Solutions | William Allen Harrod | — | (510) 845 2997 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Sun Pointe Pool & Spa Services | Phillip Thomas Yecny | pools@sunpointeservices.com | (925) 724 7669 | Pool | Livermore · Alameda County | — | — |
| Sun Rise Construction | Li Hongqiang | — | (510) 316 2689 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Sun's Free | Kevin Donald Good | — | (510) 872 3558 | Electricians | Alameda · Alameda County | — | — |
| Sunco Builders INC | Marc Douglas Cramer | — | (510) 755 7311 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Sundance Landscaping Incorporated | Randal Charles Fenton | — | (510) 773 0796 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Sunday Builders INC | Nhat Ho Nguyen | home@sundaybuilders.com | (415) 781 9429 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Sundown Power LLC | Grant Nathan Fivis | — | (510) 244 7003 | Electricians | San Lorenzo · Alameda County | — | — |
| Sunlight Electri-cal Solutions | Carlos Alberto Gomez Quevedo | — | (888) 554 6786 | Electricians | Dublin · Alameda County | — | — |
| Sunlight Painting INC | Gutierrez Raul Garcia | — | (510) 375 4558 | Windows, patio, painters | Albany · Alameda County | — | — |
| Sunlight Roofing INC | Manuel Ernesto Villarreal | — | (888) 554 6786 | Other roofers | Dublin · Alameda County | — | — |
| Sunlight Window And Door Systems INC | Benny Hung | — | (510) 866 2668 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Sunny Brothers Construction LLC | John Stuart Worrall | — | (209) 624 6951 | GC, remodel, ADU | Newark · Alameda County | — | — |
| Sunny Green Construction | Chen Lizhong | — | (510) 387 6616 | Electricians | San Leandro · Alameda County | — | — |
| Sunny Landscaping | Linda Qiu-fang Liu | — | (415) 683 8925 | Windows, patio, painters | Hayward · Alameda County | — | — |
| Sunny Liang | Sunny Liang | — | (707) 536 8899 | GC, remodel, ADU | Dublin · Alameda County | — | — |
| Sunny Neon INC | Alice Vianna Miller | — | (510) 368 2585 | Other | San Leandro · Alameda County | — | — |
| Sunny Side Electric | Nuria Patricia Bertrand | — | (415) 595 1545 | Electricians | Oakland · Alameda County | — | — |
| Sunrise Construction Co | Montgomery Lyn Patterson | — | (925) 606 0869 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Sunrise General Construction Solutions | Mike | — | (415) 203 6219 | GC, remodel, ADU | San Lorenzo · Alameda County | — | — |
| Sunrise Landscape And Design | Sunrise Landscape And Design | — | (408) 828 6654 | Windows, patio, painters | Fremont · Alameda County | — | — |
| Sunrise Refrigeration | Sunrise Refrigeration | — | (415) 290 8823 | HVAC | Union City · Alameda County | — | — |
| Sunrise Remodeling & Construction Co | John Craig Schroll | — | (510) 502 5667 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Sunrise Remodeling Company | Michael Daniel Dube | — | (415) 203 6219 | GC, remodel, ADU | San Lorenzo · Alameda County | — | — |
| Sunroof Roofing And Solar | Alvaro Daniel Ceja | — | (650) 713 5903 | Other roofers | Livermore · Alameda County | — | — |
| Sunshield Solutions INC | Bradford Dean Ii Anrig | sales@sunshieldsolutions.com | (510) 324 8500 | Other | Hayward · Alameda County | — | — |
| Sunshine Daydreams Awnings | Zakkery Ray Moen | sunshinedaydreamsawnings@gmail.com | (608) 234 0725 | Other | Castro Valley · Alameda County | — | — |
| Sunshine Glass | Sunshine Glass | — | (510) 610 5556 | Windows, patio, painters | Alameda · Alameda County | — | — |
| Sunshine Horticultural Services | Richard John Leavy | — | (510) 361 9274 | Windows, patio, painters | Alameda · Alameda County | — | — |