| Gary Mc Donald & Son INC | Gary Lee Mc Donald | — | (707) 539 7663 | Other | Santa Rosa · Sonoma County | — | — |
| Gary Zimin Drapery Installations | Gary Zimin Drapery Installations | — | (707) 529 7847 | Other | Rohnert Park · Sonoma County | — | — |
| Garza Plumbing INC | Kerry Eugene Garza | — | (707) 849 4389 | Other | Santa Rosa · Sonoma County | — | — |
| Garzini Custom Construction | Jacob Francisco Garzini | — | (707) 540 2119 | Other | Geyserville · Sonoma County | — | — |
| Garzini Welding | Garzini Welding | garziniwelding@aol.com | (707) 857 4858 | Other | Geyserville · Sonoma County | — | — |
| Gasperoni Construction Company | Stephen James Gasperoni | — | (707) 849 1467 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Gaston Painting | Gaston Painting | — | (707) 483 9576 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Gateway Builders INC | Matthew Kent Watson | — | (707) 480 8734 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Gateway Paving | Gateway Paving | gatewaypaving@yahoo.com | (707) 331 8378 | Other | South Sebastopol · Sonoma County | — | — |
| Gazzoli Construction INC | Phillip Nicholas Gazzoli | — | (415) 847 1811 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Gc Custom Builders INC | Norma Alisia Velez | — | (707) 364 9438 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Geary Construction | Edward Patrick Geary | — | (707) 981 5705 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Geer Family Construction LLC | Forrest Spencer Milholland | — | (707) 569 6323 | GC, remodel, ADU | Forestville · Sonoma County | — | — |
| Gehrett & Zunino Builders INC | Andrew Rod Gehrett | — | (707) 620 0533 | GC, remodel, ADU | Windsor · Sonoma County | — | — |
| Gendron Electric | Matthew Ian Gendron | — | (707) 540 5395 | Electricians | Cotati · Sonoma County | — | — |
| General Pools And Spa INC | Garcia Bernardo Vega | — | (707) 484 6999 | Pool | Rohnert Park · Sonoma County | — | — |
| Gentry Building & Design LLC | Denise Diane Bell | — | (707) 484 2019 | GC, remodel, ADU | Fulton · Sonoma County | — | — |
| Geo's Pool Company | Jennifer Rene Carollo | contact@geospool.com | (707) 938 5264 | Pool | Vineburg · Sonoma County | — | — |
| Geo's Pool Service | Jean Marie Noel | — | (707) 938 0340 | Pool | Vineburg · Sonoma County | — | — |
| Geoffrey Judy | Geoffrey Judy | — | (707) 938 0460 | GC, remodel, ADU | Glen Ellen · Sonoma County | — | — |
| Geometric Tile | Geometric Tile | — | (707) 396 9193 | Other | Santa Rosa · Sonoma County | — | — |
| George Drady Contractor INC | Richard Lawrence Drady | — | (707) 527 9318 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| George Higgins | George Higgins | — | (707) 623 7617 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| George Maddigan Carpets | George Maddigan Carpets | — | (707) 479 9790 | Other | Santa Rosa · Sonoma County | — | — |
| George Masonry Service INC | Hugh Barclay | — | (415) 721 0489 | Other | Santa Rosa · Sonoma County | — | — |
| George Merrill Construction Services | George Enoch Iii Merrill | — | (707) 888 8022 | HVAC | Santa Rosa · Sonoma County | — | — |
| George Polley Construction LLC | George Oliver Iii Polley | — | (707) 591 5036 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| George Sanford Kurty | George Sanford Kurty | — | (707) 396 7121 | Electricians | Santa Rosa · Sonoma County | — | — |
| George Smeltz Construction INC | George Edwin Iii Smeltz | — | (707) 953 6650 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| George Vasila | George Vasila | — | (707) 953 5759 | Electricians | Sebastopol · Sonoma County | — | — |
| Geraghty Electric | Joseph Justin Geraghty | — | (415) 686 0001 | Electricians | Sonoma · Sonoma County | — | — |
| Gerald Stahl | Gerald Stahl | — | (707) 228 7457 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Gerald Stanley Rupiper | Gerald Stanley Rupiper | — | (707) 315 3995 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Gerardo Suarez Plumbing | Gerardo Suarez Plumbing | — | (707) 495 2282 | Other | Santa Rosa · Sonoma County | — | — |
| Germaricorp INC | Aaron William Friedman | — | (707) 523 0606 | Other | Santa Rosa · Sonoma County | — | — |
| Gerzon A Berganza General Contractor | Gerzon A Berganza General Contractor | — | (707) 318 0395 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Ggg Painting | Ggg Painting | — | (707) 347 7735 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| Ghilotti Bros / Terracon Constructors Jv | Bros INC Ghilotti | — | (707) 433 0323 | GC, remodel, ADU | Healdsburg · Sonoma County | — | — |
| Ghilotti Construction Company INC | Richard William Ghilotti | — | (707) 585 1221 | Other | Santa Rosa · Sonoma County | — | — |
| Giacinto Construction INC | Adam Reimer Giacinto | — | (707) 481 2154 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |