| Friendly Services East Bay Co | Yahyah Mohammad Mayar | — | (510) 280 4698 | Other | Hayward · Alameda County | — | — |
| Fritz Johnson Tractor Service | Fritz Stanley Johnson | — | (925) 453 9274 | Other | Livermore · Alameda County | — | — |
| Fritz's Landscaping Company | Frederick Raymond Schommer | — | (925) 989 4807 | Windows, patio, painters | Dublin · Alameda County | — | — |
| Front Street Builders | Front Street Builders | — | (650) 759 6493 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Frontier Building Products Pacific INC | Spencer Paul Cheney | — | (510) 935 0086 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Frontline General Engineering Construction INC | Pedroza Jesus | — | (510) 954 0739 | Other | Livermore · Alameda County | — | — |
| Fuad Sweiss | Fuad Sweiss | — | (415) 412 8855 | Other | Oakland · Alameda County | — | — |
| Fullers Painting Comp | Fullers Painting Comp | — | (510) 543 3001 | Windows, patio, painters | Hayward · Alameda County | — | — |
| Fullerton Construction | Gregory Scott Fullerton | — | (415) 244 1691 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Fullerton Construction Company | Wang Yuanda | — | (510) 374 2896 | Electricians | Fremont · Alameda County | — | — |
| Fundaro Giorgio G Tile & Stone | Gaspare Giorgio Fundaro | — | (925) 595 0268 | Other | Livermore · Alameda County | — | — |
| Fuse Electric | Kyle Robert Pope | service@fuseelectric.com | (925) 525 3897 | Electricians | Livermore · Alameda County | — | — |
| Fusion Rooter INC | Ricardo Antonio Reyes | fusionrooter@gmail.com | (510) 695 7151 | Other | Hayward · Alameda County | — | — |
| Future Plumbing And Water Heater INC | Vladislav Pavlov Nikolov | — | (925) 577 0992 | Other | Dublin · Alameda County | — | — |
| Futurecorp Development And Construction INC | Jeffrey Haw | — | (510) 882 9974 | Electricians | Oakland · Alameda County | — | — |
| G & G Builders INC | Lorraine Lucille Callahan | — | (925) 846 9023 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| G & H Comfort Solutions LLC | Yuanbin Hu | — | (510) 289 6892 | HVAC | San Leandro · Alameda County | — | — |
| G & K Carpets INC | Gary Davison Wolfe | — | (925) 443 8300 | Other | Livermore · Alameda County | — | — |
| G & M Appliance Supply INC | Brandon Anthony Luce | — | (510) 816 0647 | Other | Albany · Alameda County | — | — |
| G & S Remodeling Services INC | Sergio Rodriguez | — | (510) 694 9282 | GC, remodel, ADU | Newark · Alameda County | — | — |
| G - Con General Construction | Estelito Golifardo Garcia | — | (510) 928 4936 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| G Brother's Ornamental Steel INC | Gilberto Granados | info@gbroinc.com | (510) 274 5667 | Other | Hayward · Alameda County | — | — |
| G C Raymond INC | Eric Martin Halverson | — | (510) 504 1815 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| G Cronk Construction | Gary Peter Cronk | — | (209) 617 6373 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| G D Plumbing & Construction | George David Campuzano | — | (510) 531 7359 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| G E D Home Improvement Services | Ferdinand Gilbert Este Delizo | — | (408) 838 2391 | Electricians | Union City · Alameda County | — | — |
| G E F C Construction | Ion George | — | (510) 760 8236 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| G E Ising INC DBA Ising's Culligan Water Of San Joaquin Valley | Christian Eric Ising | — | (925) 447 3717 | Other | Livermore · Alameda County | — | — |
| G E M Flooring INC | Javier Leonardo Marroquin | — | (510) 921 2735 | Other | Newark · Alameda County | — | — |
| G E O | G E O | — | (510) 750 5057 | Electricians | San Leandro · Alameda County | — | — |
| G F I Electric Co | Thomas George Allen | — | (925) 963 4065 | Electricians | Dublin · Alameda County | — | — |
| G G Construction | George Carlos Garza | — | (510) 289 7519 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| G J Allen Construction | Glenn Joseph Allen | — | (510) 815 0611 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| G M Construction | Diego John Valenzuela | — | (510) 418 2823 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| G M I Construction INC | Mark Andrew Edwards | — | (510) 537 2443 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| G M Painting | G M Painting | impallari@gmail.com | (510) 992 9814 | Windows, patio, painters | Alameda · Alameda County | — | — |
| G M R Construction | Gary Michael Rubenstein | — | (510) 453 0595 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| G P A Mechanical Services INC | Pavel A Gerasimov | — | (510) 589 8918 | HVAC | Hayward · Alameda County | — | — |
| G P Construction | Phat Hong Tran | — | (510) 676 4219 | GC, remodel, ADU | Union City · Alameda County | — | — |
| G P Fire Protection | Grant Shane Paulson | — | (925) 461 0985 | Other | Pleasanton · Alameda County | — | — |