| Gardens By Marla Lee | Gardens By Marla Lee | — | (510) 912 3779 | Windows, patio, painters | Alameda · Alameda County | — | — |
| Gardens By Valerie Rose | Gardens By Valerie Rose | — | (925) 963 8436 | Windows, patio, painters | Livermore · Alameda County | — | — |
| Gardensense | Kevin David Westbrooke | info@gardensense.co.uk | (510) 520 3911 | Windows, patio, painters | Albany · Alameda County | — | — |
| Gardenwise Landscapes | Gardenwise Landscapes | christine@gardenwise-landscapes.com | (510) 406 2466 | Windows, patio, painters | Hayward · Alameda County | — | — |
| Garduno Builders INC | Efrain Garduno | — | (650) 274 2410 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Garibay General Building INC | Marcelo Alejandro Garibay Rodriguez | — | (510) 485 2237 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Garibay Hardwood Floors | Garibay Hardwood Floors | — | (510) 537 8821 | Other | Hayward · Alameda County | — | — |
| Gary A Thompson | Gary A Thompson | — | (510) 750 6135 | Other | Alameda · Alameda County | — | — |
| Gary Head And Partners Painting Corporation | Daniel Antonio Madrid | — | (415) 388 3719 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Gary S Warren Company | Gary Stefan Warren | — | (925) 963 2677 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Gary Steven Loob | Gary Steven Loob | — | (510) 366 2268 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Garzac Plumbing | Garzac Plumbing | info@garzacplumbing.com | (510) 581 5005 | Other | Hayward · Alameda County | — | — |
| Gasca Plumbing & Rooter | Gasca Plumbing & Rooter | — | (510) 239 6175 | Other | Oakland · Alameda County | — | — |
| Gass Trucking LP DBA Gass Services | Alan Caulfield Guy | — | (415) 285 5000 | GC, remodel, ADU | Emeryville · Alameda County | — | — |
| Gastelum Lath And Plastering INC | Simon Gastelum | — | (510) 467 2648 | Other | Oakland · Alameda County | — | — |
| Gastelum Roofing | Edgar Agustin Gastelum-reyes | — | (510) 409 5311 | Other roofers | Oakland · Alameda County | — | — |
| Gatco Construction & Plumbing | Gregory Alan Trautwein | — | (510) 610 2157 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Gatech | Marco Antonio Pulido | — | (510) 372 4049 | Other | Hayward · Alameda County | — | — |
| Gateway Electric | Alexa A Soucy | mail@gateway-electric.com | (510) 409 0360 | Electricians | Oakland · Alameda County | — | — |
| Gateway Landscape Construction INC | Corey John Pontrelli | — | (925) 875 0000 | Windows, patio, painters | Pleasanton · Alameda County | — | — |
| Gator Rooter And Plumbing INC | Jose Humberto Inguanzo | — | (510) 294 8977 | Other | Fremont · Alameda County | — | — |
| Gator Tankless Water Heaters And Plumbing | Daniel Bruno Zuniga | — | (510) 593 1617 | Other | Oakland · Alameda County | — | — |
| Gator Tech Integration INC | Avner Hassine | — | (510) 979 1944 | Electricians | Fremont · Alameda County | — | — |
| Gaxl General Construction INC | Jose Galicia | — | (510) 825 4736 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Gc Security Design INC | Cesar Steve Bonilla | sales@gcsecuritydesign.com | (408) 868 2378 | Alarm and generators | Fremont · Alameda County | — | — |
| Gce Construction | Hernandez Rodolfo Becerril | — | (415) 444 6652 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Gdg Builders | Audean Michael Ghanbari | — | (510) 375 0833 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Ge Construction | Ge Qiang | — | (510) 579 4608 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Ge Construction INC | Da Ru Li | — | (510) 652 8882 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Geahry Construction INC | Stephen Donald Geahry | — | (510) 205 3344 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Geico Builders INC | Rashid Dzhaudatovic Risbay | — | (628) 202 6689 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Gem Home Improvements INC | Altangerel Baldorj | — | (510) 424 1772 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Gemini Design & Construction | Thomas Comendador Jr Santos | — | (510) 396 8499 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Gen - Tech Construction INC | Daniel Wesley Marzilli | — | (510) 671 6150 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Genaro Frias | Genaro Frias | yupi.webdesign@gmail.com | (510) 750 6736 | Windows, patio, painters | Hayward · Alameda County | — | — |
| Gene Dussell | Gene Dussell | — | (510) 377 8130 | Electricians | Berkeley · Alameda County | — | — |
| Gene's Custom Builders | Gene's Custom Builders | — | (408) 712 0419 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Gene's Painting | Gene's Painting | — | (510) 636 9997 | Windows, patio, painters | San Leandro · Alameda County | — | — |
| General Building Corporation | Zachary Russell Heineman | info@general-building.com | (510) 821 4691 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| General Construction | Hung Minh Tran | — | (510) 894 1921 | GC, remodel, ADU | Newark · Alameda County | — | — |