| Figs Roofing LLC | Erick Figueroa | — | (415) 336 3236 | Other roofers | San Rafael · Marin County | — | — |
| Finch Construction | Marc Evan Finch | — | (415) 601 5282 | GC, remodel, ADU | Fairfax · Marin County | — | — |
| Find-a-way Construction | Jose Maria Lopez | — | (415) 272 4555 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Fine Edge Drywall INC | Cortez Leonardo Gomez | info@fineedgedrywall.com | (415) 756 1676 | Other | Novato · Marin County | — | — |
| Finish Works Remodeling | Finish Works Remodeling | — | (415) 686 4572 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Finnish American Sauna Company | John Timo Kolkka | — | (650) 327 5001 | GC, remodel, ADU | Sausalito · Marin County | — | — |
| Fire Technologies | Fire Technologies | — | (415) 250 9654 | Other | San Rafael · Marin County | — | — |
| Fireplace Prefabricated Equipment | Ralph John Boccabella | — | (415) 761 9997 | Other | Novato · Marin County | — | — |
| Fireplace Safety Service LLC | Mark Allen Rizzo | — | (415) 479 1080 | Other | Mill Valley · Marin County | — | — |
| First Drywall INC | Darryl Alexander Johnson | — | (415) 845 0150 | Other | Novato · Marin County | — | — |
| Fischer Custom Sheet Metal | Ryan Ashely Fischer | — | (415) 686 6215 | Other | San Rafael · Marin County | — | — |
| Fitzgerald's Wood Care Service | Mark Anthony Fitzgerald | — | (415) 900 8939 | GC, remodel, ADU | San Anselmo · Marin County | — | — |
| Fitzpatrick's Heating INC | John Thomas Jr Fitzpatrick | — | (415) 457 0607 | HVAC | Fairfax · Marin County | — | — |
| Five Star Property Maintainence Co | Dean Rozul Aure | — | (415) 740 4552 | GC, remodel, ADU | Novato · Marin County | — | — |
| Fj Excellent Painting | Fj Excellent Painting | — | (415) 499 2455 | Windows, patio, painters | Novato · Marin County | — | — |
| Flint Hood Construction | Flint Michael Hood | — | (415) 485 0808 | GC, remodel, ADU | Fairfax · Marin County | — | — |
| Flooronline.com | Terry Bruce Mc Taggart | — | (415) 720 5239 | Other | San Rafael · Marin County | — | — |
| Floortex Design INC | Rudy Joe Hassid | — | (415) 785 4614 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Flora And Fauna Landscaping | Flora And Fauna Landscaping | — | (415) 847 4520 | Windows, patio, painters | Novato · Marin County | — | — |
| Flores Builders | Flores Builders | — | (415) 235 0948 | GC, remodel, ADU | Novato · Marin County | — | — |
| Flores Electric Services INC | Angeles Luciano Flores | — | (415) 720 0605 | Electricians | San Rafael · Marin County | — | — |
| Floyd Construction INC | Joseph Leconie Floyd | — | (415) 485 0645 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Fmc Construction LLC | Juan Manuel Freer | — | (415) 342 0358 | GC, remodel, ADU | Novato · Marin County | — | — |
| Fmr Construction INC | Remy Johannes Sijbrant | — | (415) 235 5906 | GC, remodel, ADU | Novato · Marin County | — | — |
| Fog Line Builders INC | Jonah Evan Smallwood | info@foglinebuilders.com | (415) 858 5629 | GC, remodel, ADU | Novato · Marin County | — | — |
| Fogle Plumbing | Fogle Plumbing | fogleplumb@gmail.com | (415) 497 1139 | Other | San Rafael · Marin County | — | — |
| Foley Builds Corp | Matthew Aaron Foley | — | (415) 903 1465 | GC, remodel, ADU | Novato · Marin County | — | — |
| Foley Built | Brett Shaw Foley | info@foleybuilt.com | (415) 264 9321 | GC, remodel, ADU | Mill Valley · Marin County | — | — |
| Fontana Construction INC | Stevan Edward Fontana | info@fontanaconstruction.com | (415) 457 1290 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Fooseworks Construction | Marc Peter Robins Foose | — | (415) 652 3475 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Footfour Builders | Pablo Cristian Wainmayer | pablo.footfourbuilders@gmail.com | (530) 331 5040 | GC, remodel, ADU | Novato · Marin County | — | — |
| Forbes Construction Company | Nicholas Bijan Forbes | — | (415) 578 8978 | Other | Nicasio · Marin County | — | — |
| Forevergreen Landscape | Forevergreen Landscape | — | (415) 461 6130 | Windows, patio, painters | Novato · Marin County | — | — |
| Fornesi Construction | Sandro Amelio Fornesi | — | (650) 504 3724 | GC, remodel, ADU | Mill Valley · Marin County | — | — |
| Forney Construction | Chris William Forney | — | (415) 678 9643 | GC, remodel, ADU | Novato · Marin County | — | — |
| Forsberg Builders | Forsberg Builders | — | (415) 328 0815 | GC, remodel, ADU | Dillon Beach · Marin County | — | — |
| Forster & Kroeger Landscape Maintenance INC | Garcia Raul | — | (415) 456 6684 | Windows, patio, painters | San Rafael · Marin County | — | — |
| Foundation Homes | Foundation Homes | hello@wandersoulco.com | — | Property managers | Marin · Marin County | — | — |
| Foundation Homes Property Management | Foundation Homes Property Management | hello@wandersoulco.com | (415) 507-9600 | Property managers | Kentfield · Marin County | — | — |
| Franconia Construction | Doran Julian Fox | — | (415) 342 5865 | GC, remodel, ADU | San Anselmo · Marin County | — | — |