| Gabriel Lopez Construction | Gabriel Jovan Lopez | — | (415) 879 2603 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Gabriel Raya Drywall INC | Gabriel Aguilar Raya | — | (707) 548 1722 | Other | Santa Rosa · Sonoma County | — | — |
| Gabriel Riveras | Gabriel Riveras | — | (707) 888 1750 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Gaddie Painting | Gaddie Painting | — | (707) 292 6305 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Gaddis Construction | Jason Daniel Gaddis | admin@gaddisconstruction.com | (707) 849 4355 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Galea Construction | James Rico Galea | — | (707) 794 0539 | Other | Petaluma · Sonoma County | — | — |
| Galea Electric | Gino Anthony Galea | — | (707) 694 2446 | Electricians | Santa Rosa · Sonoma County | — | — |
| Galen Brookins Construction INC | Galen Campbell Jr Brookins | — | (707) 823 8811 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Gallaher Construction INC | William Perry Gallaher | — | (707) 535 3220 | GC, remodel, ADU | Windsor · Sonoma County | — | — |
| Gallaher Signature Construction INC | William Perry Gallaher | — | (707) 535 3200 | GC, remodel, ADU | Windsor · Sonoma County | — | — |
| Galliani Tile And Construction | Richard Maurice Jr Galliani | — | (415) 798 0388 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Galos Drywall INC | Samuel Garcia | — | (707) 322 2133 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Galus Painting | Galus Painting | galuspainting@gmail.com | (707) 579 2680 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Galvaknight Sheet Metal Solutions INC | Steven Allan Pieraccini | — | (415) 717 1885 | HVAC | Petaluma · Sonoma County | — | — |
| Galvan & Son Plastering INC | Carlos Cuadra Galvan | — | (707) 815 8868 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Galvan Roofing & Gutters | Galvan Hernandez Arturo | — | (707) 608 8928 | Other roofers | Windsor · Sonoma County | — | — |
| Galvan Underground Construction INC | Galvan Oscar | — | (707) 608 8625 | Other | Windsor · Sonoma County | — | — |
| Gama Hardwood Floors | Gama Hardwood Floors | — | (415) 300 6395 | Other | Petaluma · Sonoma County | — | — |
| Gamez Electric INC | Gamez-ugalde Guillermo | gamezelectric1973@gmail.com | (707) 480 2211 | Electricians | Windsor · Sonoma County | — | — |
| Ganrock Corp | Brian Charles Gannon | info@ganrock.com | (707) 888 4316 | Other | Sebastopol · Sonoma County | — | — |
| Garage Door Depot | Garage Door Depot | — | (707) 575 9103 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Garcia Construction | Jose Luis Jr Garcia | impallari@gmail.com | (707) 332 2216 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Garcia Construction | Jose Guillermo Garcia Magana | impallari@gmail.com | (707) 495 9149 | GC, remodel, ADU | Cotati · Sonoma County | — | — |
| Garcia Floor Covering | Garcia Floor Covering | — | (707) 843 1461 | Other | Cloverdale · Sonoma County | — | — |
| Garcia Landscaping | Garcia Landscaping | — | (707) 887 0155 | Windows, patio, painters | Sebastopol · Sonoma County | — | — |
| Garcia's Tree Pro | Torres Jair Bustos | — | (707) 890 0737 | Other | Windsor · Sonoma County | — | — |
| Garcia's Ultimate Construction | Garcia Moreno Rodolfo | — | (707) 738 4272 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Garcias Plumbing Innovation LLC | Jose Hiram Garcia Guzman | — | (707) 888 3762 | Other | Santa Rosa · Sonoma County | — | — |
| Gardens Of The Wine Country INC | Alan Amel Kostelnik | — | (415) 307 3694 | Windows, patio, painters | Sebastopol · Sonoma County | — | — |
| Gardenworks INC | Salvador Ledezma | — | (707) 857 2050 | Windows, patio, painters | Healdsburg · Sonoma County | — | — |
| Gardner Construction | Richard Edward Gardner | — | (707) 538 8196 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Garner Custom Tile | Garner Custom Tile | — | (707) 799 4316 | Other | Sonoma · Sonoma County | — | — |
| Garris Walter Chuba | Garris Walter Chuba | — | (707) 486 6913 | GC, remodel, ADU | Occidental · Sonoma County | — | — |
| Garrison Contracting | Richard Brian Garrison | — | (707) 578 4311 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Gary A Ohlin | Gary A Ohlin | — | (707) 799 8750 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Gary Brady Painting Company | Gary Donald Brady | — | (707) 694 3589 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Gary Burlington & Associates INC | Gary Scott Burlington | — | (707) 292 7558 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Gary Davis Construction | Gary Allen Davis | — | (707) 823 4547 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Gary Hansen Electric | Gary Michael Hansen | — | (707) 529 2177 | Electricians | Petaluma · Sonoma County | — | — |
| Gary L Podesta | Gary L Podesta | — | (707) 338 8596 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |