| Green Earth Construction | Zand Cameron | — | (916) 806 9932 | GC, remodel, ADU | San Anselmo · Marin County | — | — |
| Green Gate Energy Solutions LLC | Dakota Christopher Corbett-Gruye | — | (415) 710 8597 | Electricians | San Rafael · Marin County | — | — |
| Green Hand Landscaping | Green Hand Landscaping | — | (415) 726 8686 | Windows, patio, painters | San Rafael · Marin County | — | — |
| Green Innovation Electrical | Santos Alejandro Oropeza Barbero | — | (415) 261 5759 | Electricians | Greenbrae · Marin County | — | — |
| Green Oak Painting | Omar Alejandro Alvarado Alfaro | — | (415) 377 0908 | Windows, patio, painters | Novato · Marin County | — | — |
| Green Organic Construction Clean Up INC | Yessica Lisseth Medrano Funes | — | (415) 246 8700 | Other | Novato · Marin County | — | — |
| Green Point Turf | Green Point Turf | — | (415) 787 5048 | Other | Fairfax · Marin County | — | — |
| Green Ravine Builders INC | Eliot Freeman Wread | — | (650) 208 5447 | GC, remodel, ADU | Point Reyes Station · Marin County | — | — |
| Green Thumb Landscaping | Green Thumb Landscaping | — | (415) 505 7281 | Windows, patio, painters | Novato · Marin County | — | — |
| Green's Tree Service LLC | Tyler Joseph Green | — | (415) 519 7703 | Other | San Rafael · Marin County | — | — |
| Greene Building Company INC | Holt St Clair Greene | — | (415) 456 5323 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Greener Excavations & Construction INC | Foley Paul | — | (415) 451 4841 | Other | San Rafael · Marin County | — | — |
| Greenfield Carpentry & Remodeling LLC | Jason Alan Blackman | — | (415) 686 7887 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Greenport Construction INC | Eli Fiery Froneberger | — | (415) 342 2053 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Greenview Tree Care | Greenview Tree Care | — | (415) 261 3222 | Other | San Rafael · Marin County | — | — |
| Greenwood Electric INC | Joseph Anthony Greenwood | — | (415) 479 6858 | Electricians | San Rafael · Marin County | — | — |
| Greenwood Plumbing | Greenwood Plumbing | — | (415) 454 4814 | Other | Woodacre · Marin County | — | — |
| Greg Adair Construction & Remodeling | Gregory Mark Adair | — | (415) 320 4318 | GC, remodel, ADU | Novato · Marin County | — | — |
| Greg Ferrando Painting | Greg Ferrando Painting | — | (415) 699 6415 | Windows, patio, painters | Kentfield · Marin County | — | — |
| Greg Shaw Construction | Gregory Mark Shaw | — | (415) 309 0739 | GC, remodel, ADU | Fairfax · Marin County | — | — |
| Greg Watkins DBA Watkins Weather Systems | Weather Systems | — | (415) 215 4772 | HVAC | San Rafael · Marin County | — | — |
| Greg's Locksmithing | Greg's Locksmithing | info@gregslocksmith.com | (415) 453 1300 | Electricians | San Anselmo · Marin County | — | — |
| Gregory Davis Construction INC | Gregory John Davis | — | (415) 328 8239 | GC, remodel, ADU | Novato · Marin County | — | — |
| Gregory Schrier Cabinetmaker | Gregory Schrier Cabinetmaker | — | (415) 368 9535 | Other | Mill Valley · Marin County | — | — |
| Gregory Steven Beebe | Gregory Steven Beebe | — | (415) 302 0332 | GC, remodel, ADU | Novato · Marin County | — | — |
| Gregory T Sale Construction | Gregory Todd Sale | — | (415) 497 6350 | GC, remodel, ADU | San Anselmo · Marin County | — | — |
| Gremelli Industries | Melanie Susan Donaghy | — | (510) 675 7200 | Electricians | San Rafael · Marin County | — | — |
| Gridwise Electric LLC | Mark Ian Ii Lounsbury | hello@gridwiseelectric.com | (415) 488 8828 | Electricians | San Rafael · Marin County | — | — |
| Grier Argall Plumbing INC | Grier Timothy Argall | — | (415) 457 0748 | Other | San Anselmo · Marin County | — | — |
| Grier Construction | Jonathan Leo Grier | — | (415) 640 3289 | GC, remodel, ADU | Novato · Marin County | — | — |
| Griesshaber Builders INC | Paul Eugene Griesshaber | — | (415) 846 3563 | GC, remodel, ADU | Corte Madera · Marin County | — | — |
| Griffith-gbi Jv | Bros INC Ghilotti | — | (415) 454 7011 | Other | San Rafael · Marin County | — | — |
| Gris Construction INC | Kevin James Mcnulty | — | (415) 374 6440 | GC, remodel, ADU | Novato · Marin County | — | — |
| Groundbreaking Landscapes | Groundbreaking Landscapes | — | (415) 699 6209 | Windows, patio, painters | San Anselmo · Marin County | — | — |
| Growing Image Landscape | Growing Image Landscape | — | (415) 332 5910 | Windows, patio, painters | Sausalito · Marin County | — | — |
| Gruenert Building INC | Aaron Cotter Gruenert | — | (415) 328 6082 | GC, remodel, ADU | Mill Valley · Marin County | — | — |
| Grundy Construction Company | Michael William Grundy | — | (415) 306 4181 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Guardian Angel Electric INC | Phillip Andrew Montoya | — | (505) 670 3593 | Electricians | San Rafael · Marin County | — | — |
| Gubbins Building Company INC | Peter Anthony Jr Gubbins | — | (415) 924 9031 | GC, remodel, ADU | Fairfax · Marin County | — | — |
| Gudiel Mazariegos Construction | Gudiel Rulaman Mazariegos Calderon | — | (415) 328 3964 | GC, remodel, ADU | San Rafael · Marin County | — | — |