| Fairway Builders INC | Michael Robert Boufford | — | (415) 850 1458 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Fairway Custom Cabinet Corp | Ala Muhamad Abual Halaweh | — | (415) 827 6809 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Fairweather & Associates INC | Simon Scott Fairweather | — | (707) 829 2922 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Falk Forestry INC | Daniel Eric Falk | — | (707) 367 0312 | Other | Stewarts Point · Sonoma County | — | — |
| Familia Chavez Tree Care LLC | Arcangel Martinez-Villegas | — | (707) 477 6995 | Tree | Guerneville · Sonoma County | — | — |
| Family 1st Service Plumbing | Andrew Charles Moody | — | (707) 228 4595 | Other | Santa Rosa · Sonoma County | — | — |
| Farinato Construction INC | Paul Joseph Farinato | — | (707) 486 5538 | GC, remodel, ADU | Glen Ellen · Sonoma County | — | — |
| Farinha Construction | Richard Al Farinha | — | (707) 338 2301 | GC, remodel, ADU | Cotati · Sonoma County | — | — |
| Farr Construction Co | Jeffery Samuel Sexton | — | (707) 569 0644 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Farr West Construction Group INC | Shawn Ryan Malpass | — | (707) 812 0998 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Farrar Construction INC | Mark Christian Farrar | — | (707) 776 2650 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Farrow Commercial INC | John Cochrane Farrow | — | (707) 591 0225 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Fastsigns Petaluma | Agustin Rodrigo Pope Ortiz | — | (707) 981 7350 | Other | Petaluma · Sonoma County | — | — |
| Father's Touch INC | Timo Christer Alli | donald@fatherstouch.com | (707) 495 3768 | Tree | Healdsburg · Sonoma County | — | — |
| Fatima Electric INC | Stephen Charles Warner | — | (707) 775 7138 | Electricians | Santa Rosa · Sonoma County | — | — |
| Faurrieta Paving | Faurrieta Paving | faurrietapaving@gmail.com | (707) 322 0874 | Other | Santa Rosa · Sonoma County | — | — |
| Faustino's Plumbing Service | Adam Jordan Faustino | — | (707) 975 7953 | Other | Petaluma · Sonoma County | — | — |
| Fausto Drywall LLC | Fausto Becerra Jesus | — | (707) 529 0986 | Other | Santa Rosa · Sonoma County | — | — |
| Favela's Painting | Favela's Painting | — | (707) 291 0172 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Fazio Builders INC | Aldo Gino Fazio | — | (708) 372 1099 | GC, remodel, ADU | Guerneville · Sonoma County | — | — |
| Fc Canela's Construction | Cruz Canela Fernando | — | (707) 971 6699 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Fe Framing | Estrada Villa Francisco | — | (707) 387 8183 | Other | Santa Rosa · Sonoma County | — | — |
| Featherrock | William Joseph Mc Laughlin | — | (707) 829 6830 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Fecteau Enterprises | Joseph Robert Fecteau | — | (707) 484 1320 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Felix Contreras Landscaping | Felix Contreras Landscaping | felixcontreras74@yahoo.com | (707) 569 8234 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Felix's Landscaping And Tree Service LLC | Altamirano Diaz Felix | — | (707) 753 3032 | Windows, patio, painters | Penngrove · Sonoma County | — | — |
| Fermo Stone Tile | Fermo Stone Tile | — | (707) 814 5614 | Other | Santa Rosa · Sonoma County | — | — |
| Fernandez Landscape Maintenance INC | Jorge Alberto Fernandez | — | (707) 548 5139 | Windows, patio, painters | Windsor · Sonoma County | — | — |
| Fernandez Masonry | Fernandez Elmer | — | (973) 769-0634 | Other | Petaluma · Sonoma County | — | — |
| Fernandez Painting | Fernandez Painting | — | (707) 486 8109 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Ferrando's Plumbing & Heating INC | Michelle Renee Hall | — | (707) 938 8311 | HVAC | Sonoma · Sonoma County | — | — |
| Ferretti Softwash | Ronny Alberto Estrada Franco | ferrettisoftwash@gmail.com | (707) 327 8880 | Other | Rohnert Park · Sonoma County | — | — |
| Ferris Electric | Ryan M Ferris | — | (707) 974 1485 | Electricians | Petaluma · Sonoma County | — | — |
| Fertino's Painting LLC | Christopher Joseph Fertino Sanchez | — | (707) 292 0372 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Fette Electric | Randy John Fette | — | (707) 508 6422 | Electricians | Santa Rosa · Sonoma County | — | — |
| Fh Electric LLC | Fernando Resendiz Hermosillo | — | (707) 867 8109 | Electricians | Santa Rosa · Sonoma County | — | — |
| Fidel Fernandez | Fidel Fernandez | — | (707) 486 5297 | Windows, patio, painters | Vineburg · Sonoma County | — | — |
| Field Electric | Matthew Robert Field | — | (707) 769 9525 | Electricians | Petaluma · Sonoma County | — | — |
| Figueroa's Landscaping Solutions Corp | Antonio Figueroa | — | (707) 477 9117 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Filshie Construction | Filshie Greg | — | (707) 235 1927 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |