| Grapevine Communications | Ryan Longyear Lyeth | — | (707) 433 9199 | Other | Healdsburg · Sonoma County | — | — |
| Gratto Electric | Scott David Gratto-bachman | — | (707) 338 5259 | Electricians | Santa Rosa · Sonoma County | — | — |
| Gravesen Construction | Lawrence Franklin Gravesen | — | (707) 477 2674 | GC, remodel, ADU | Jenner · Sonoma County | — | — |
| Gre Builders INC | Reyes Elmer Gallegos | — | (707) 293 4705 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Greatenergy | Tibor Peter Fischl | — | (707) 917 1043 | Electricians | Santa Rosa · Sonoma County | — | — |
| Greater Bay Electric INC | Roger Alberto Hunter | — | (415) 571 0087 | Electricians | Rohnert Park · Sonoma County | — | — |
| Green Arc Builders | Green Arc Builders | — | (707) 829 8880 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Green Core Heating & Air INC | Anthony Mark Milano | — | (707) 988 5858 | HVAC | Petaluma · Sonoma County | — | — |
| Green Culture Landscaping INC | Macias Pedro Andrade | — | (707) 703 0374 | Windows, patio, painters | Cloverdale · Sonoma County | — | — |
| Green Earth Landscapeing | Green Earth Landscapeing | — | (707) 484 2389 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Green Giant Landscape | Green Giant Landscape | — | (707) 321 7385 | Windows, patio, painters | Sonoma · Sonoma County | — | — |
| Green Hammer Builders INC | Jared Scott Brown | — | (650) 242 6095 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Green Images And Design INC | David Alan Smith | — | (707) 347 5992 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| Green Lynx | Barbara Ann Egger | — | (707) 665 5701 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Green Magic Landscaping | Green Magic Landscaping | — | (707) 303 5362 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| Green Oak Landscape | Green Oak Landscape | — | (707) 484 7112 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| Green On Grounds Landscapes | Green On Grounds Landscapes | — | (707) 304 0092 | Windows, patio, painters | Geyserville · Sonoma County | — | — |
| Green Town Electric | Villegas Mora Christian | — | (707) 490 5605 | Electricians | Santa Rosa · Sonoma County | — | — |
| Green Valley Electric | Jesus Noe Villasenor | — | (707) 318 4247 | Electricians | Sebastopol · Sonoma County | — | — |
| Green Valley Slab Works | Green Valley Slab Works | — | (707) 494 1350 | Other | Forestville · Sonoma County | — | — |
| Green View Engineering | Green View Engineering | mmunoz@greenviewengineering.com | (650) 400 1253 | Other | Healdsburg · Sonoma County | — | — |
| Green Vine Landscaping INC | Ivan Lopez Perez | — | (707) 540 1741 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Green Wave Building | Green Wave Building | — | (707) 591 1527 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Green Worx Painting | Green Worx Painting | — | (530) 721 6667 | Windows, patio, painters | Sebastopol · Sonoma County | — | — |
| Greenlief Energy INC | Chad Everett Greenlief | — | (415) 342 8624 | HVAC | Petaluma · Sonoma County | — | — |
| Greenrun Construction | Rodney Edward Jansen | — | (707) 812 7006 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Greenstone Environments INC | Michelle Marie Paul | — | (707) 782 8611 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| Greentree Design Build | Paul Matthew Chenevert | — | (415) 302 2260 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Greenworld Electric Solutions LLC | Jesus Emilio Cruz | — | (408) 791 7599 | Electricians | Santa Rosa · Sonoma County | — | — |
| Greg Bino Construction | Gregory Frank Bino | — | (707) 974 4548 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Greg Hall Construction | Gregory Howard Hall | — | (707) 738 1239 | GC, remodel, ADU | Geyserville · Sonoma County | — | — |
| Greg Nelson Builder INC | Gregory Edward Nelson | — | (707) 849 2547 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Greg Nelson Construction INC | Gregory James Nelson | — | (707) 338 4718 | Other | Petaluma · Sonoma County | — | — |
| Greg Pahlow Electric | Gregory Scott Pahlow | — | (707) 849 2961 | Electricians | Kenwood · Sonoma County | — | — |
| Greg Smallcomb Company | Gregory Edward Smallcomb | — | (707) 573 8500 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Greg Webb Construction | Gregory Owen Webb | — | (707) 526 3370 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Greg's Concrete Service | Gregory James Bushey | — | (707) 332 7826 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Gregg Construction | Mike Angelo Gregg | — | (707) 539 0267 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Gregory D Service DBA Service Structures | Gregory Dale Service | — | (707) 495 0929 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Gregory Francis Phipps | Gregory Francis Phipps | — | (707) 843 7896 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |