| Golden State Pro Structural Framing | Eloy Figueroa | — | (707) 230 9647 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Golden State Sheet Metal | Golden State Sheet Metal | — | (707) 953 1220 | HVAC | Forestville · Sonoma County | — | — |
| Golden West Builders | Golden West Builders | — | (415) 407 0124 | HVAC | Healdsburg · Sonoma County | — | — |
| Golden West Glass Co | Nicholas Robert Olson | support@goldenwestglass.com | (707) 939 9604 | Windows, patio, painters | Sonoma · Sonoma County | — | — |
| Golobe & Son Paving | Golobe & Son Paving | — | (707) 769 1633 | Other | Sebastopol · Sonoma County | — | — |
| Goltermann Construction INC | April E Goltermann | — | (707) 775 2525 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Gomez Construction | Gomez Joel | — | (213) 440 7269 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Gomez Drywall | Gomez Drywall | d.gomezdrywall@gmail.com | (707) 484 7867 | Other | Rohnert Park · Sonoma County | — | — |
| Gomez Floor Covering | Gomez Floor Covering | — | (707) 396 8012 | Other | Santa Rosa · Sonoma County | — | — |
| Gomez Landscaping | Gomez Landscaping | — | (707) 324 9014 | Windows, patio, painters | Vineburg · Sonoma County | — | — |
| Gomez Plastering | Gomez Plastering | — | (707) 480 0005 | Other | Santa Rosa · Sonoma County | — | — |
| Gomez Pools & Spas Corp | Gomez Osorno Pedro | — | (707) 541 8418 | Pool | Santa Rosa · Sonoma County | — | — |
| Gonnella Flooring Company | Jeffrey Adam Gonnella | — | (707) 481 6144 | Other | Santa Rosa · Sonoma County | — | — |
| Gonvar Building Maintenance DBA Gonvar Construction Cleanup | Elmer Armando Gonzalez | — | (707) 793 9353 | Other | Cotati · Sonoma County | — | — |
| Gonzalez Custom Construction INC | Garcia Carlos Gonzalez | carlos@gonzalezcustomconstruction.com | (707) 490 6021 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Gonzalez Fence Company | Gonzalez Paz Carlos | — | (707) 217 4322 | Other | Cloverdale · Sonoma County | — | — |
| Gonzalez Tile | Gonzalez Tile | — | (707) 280 1490 | Other | Santa Rosa · Sonoma County | — | — |
| Gonzalez Tree Service LLC | Erasmo Gonzalez Gonzalez | — | (707) 721 2057 | Other | Annapolis · Sonoma County | — | — |
| Gonzalez's Tree Service A Partnership | Juan Manuel Gonzalez | — | (415) 497 1015 | Tree | Santa Rosa · Sonoma County | — | — |
| Good Construction | Antonio Lee Good | — | (415) 260 0076 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Good Energy Electric LLC | William Edward Morato | — | (707) 217 9985 | Electricians | Rohnert Park · Sonoma County | — | — |
| Good Nature Pool Service | Lowell Steven Hall | — | (415) 408 8980 | Pool | Windsor · Sonoma County | — | — |
| Good Ol' Plumbers | Good Ol' Plumbers | — | (707) 332 6455 | Other | Santa Rosa · Sonoma County | — | — |
| Good Riddance Hauling And Demolition | Simon Lee Purshouse | — | (707) 935 0530 | Other | Sonoma · Sonoma County | — | — |
| Goodale General Builders | Goodale General Builders | — | (510) 205 5862 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Goodman Construction And Electrical INC | Richard Blair Jr Goodman | — | (707) 953 9484 | Electricians | Santa Rosa · Sonoma County | — | — |
| Gopher - It Trenchless | John Francis Mc Mahon | gopherittrenchless@gmail.com | (707) 360 7928 | Other | Sonoma · Sonoma County | — | — |
| Gordon Cato Landscape Construction | Gordon Edward Cato | — | (707) 479 6027 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| Gordon Construction | William John Jr Gordon | — | (707) 987 0239 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Gordon Lehman Construction | Gordon Bayard Lehman | — | (707) 483 5184 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Gorilla Roofing | Geno Atilio Quecke | — | (707) 703 0589 | Other roofers | Petaluma · Sonoma County | — | — |
| Gossage Electric | Steven Lewis Gossasge | — | (707) 849 9525 | Electricians | Rohnert Park · Sonoma County | — | — |
| Gossner Construction INC | Cole Anthony Gossner | — | (707) 228 5858 | Other | Santa Rosa · Sonoma County | — | — |
| Gracie Construction INC | Sam Connor Turner | — | (707) 974 1890 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Grade A Builders | Adrian Parrales Gonzalez | — | (707) 280 9660 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Grail Electric | Ramon Eric-emrys Grail | — | (707) 888 5534 | Electricians | Sebastopol · Sonoma County | — | — |
| Gramajo Roofing INC | Delfido Isaias Gramajo Ramos | info@gramajoroofing.com | (415) 532 9114 | Other roofers | Santa Rosa · Sonoma County | — | — |
| Grande Electric | Grande Cuellar Bonerges | — | (707) 548 2121 | Electricians | Sonoma · Sonoma County | — | — |
| Granko Av | Ryan Michael Granko | — | (707) 291 5516 | Other | Sonoma · Sonoma County | — | — |
| Grant Walsh | Grant Walsh | — | (707) 338 2227 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |