| Fci Construction INC | Forrest David Linebarger | — | (650) 400 2266 | GC, remodel, ADU | Portola Valley · San Mateo County | — | — |
| Fdl Plumbing INC | Francisco Rodolfo De Leon | — | (415) 678 9557 | Other | Daly City · San Mateo County | — | — |
| Feather River Fire Protection INC | Jeffrey Harald Hansen | — | (650) 670 0529 | Other | Redwood City · San Mateo County | — | — |
| Feil Construction | Daniel Fred Feil | — | (650) 346 5268 | GC, remodel, ADU | Redwood City · San Mateo County | — | — |
| Fencemaster | Herrera Jaime Pardo | — | (650) 465 2649 | Windows, patio, painters | San Carlos · San Mateo County | — | — |
| Fencepro | Armando Timothy Garcia | — | (415) 468 8485 | GC, remodel, ADU | Brisbane · San Mateo County | — | — |
| Fergo High Quality General Construction | Gonzalez Rodriguez Fernando | — | (415) 933 2961 | GC, remodel, ADU | Daly City · San Mateo County | — | — |
| Fern Electric & Control INC | Joyce Fernandez | — | (650) 952 3203 | Electricians | South San Francisco · San Mateo County | — | — |
| Fern Tile Company | Constance Geraldine Fernandez | — | (650) 697 4003 | Other | Millbrae · San Mateo County | — | — |
| Fern's Landscaping INC | Sanchez Miguel Fernandez | — | (650) 533 5041 | Windows, patio, painters | Belmont · San Mateo County | — | — |
| Fernando Cuevas Landscaping INC | Lopez Cuevas | — | (650) 444 9108 | Windows, patio, painters | Burlingame · San Mateo County | — | — |
| Fernando The Neat | Fernando The Neat | — | (650) 591 4682 | Windows, patio, painters | San Carlos · San Mateo County | — | — |
| Ferrari Construction | George Anthony Ferrari | interested@domainmarket.com | (415) 264 6110 | GC, remodel, ADU | South San Francisco · San Mateo County | — | — |
| Ferro Cosntruction | Ferro Cosntruction | — | (650) 222 0704 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Ferro Electric | Paul Ross Ferro | — | (650) 454 5261 | Electricians | Redwood City · San Mateo County | — | — |
| Ferusag Construction | Timoteo Fernando Cervantes | — | (650) 720 0325 | GC, remodel, ADU | Half Moon Bay · San Mateo County | — | — |
| Fg Force Construction INC | Albert Raul Fuentes Galindo | — | (415) 672 2096 | GC, remodel, ADU | Burlingame · San Mateo County | — | — |
| Fiberglass Unlimited INC | Christopher Paul Schulz | fiberglassunlimitedinc@gmail.com | (650) 787 8099 | Other | San Mateo · San Mateo County | — | — |
| Fidelity Electric | Vitaly Yakovlevich Giginyak | — | (650) 773 0707 | Electricians | Foster City · San Mateo County | — | — |
| Fides Construction INC | Pak Yat Lee | pak@fidesconstruction.com | (415) 730 1731 | Electricians | Millbrae · San Mateo County | — | — |
| Fields Electric | Scotty Daniel Fields | — | (650) 690 4537 | Electricians | Redwood City · San Mateo County | — | — |
| Figoni Plumbing | Figoni Plumbing | — | (415) 602 7495 | Other | Brisbane · San Mateo County | — | — |
| Final Coat Painting | Final Coat Painting | — | (650) 278 3099 | Windows, patio, painters | San Mateo · San Mateo County | — | — |
| Final House Construction | George Shu Bin Lei | — | (650) 430 0136 | GC, remodel, ADU | San Bruno · San Mateo County | — | — |
| Finbarr O'donoghue | Finbarr O'donoghue | — | (650) 580 2769 | GC, remodel, ADU | South San Francisco · San Mateo County | — | — |
| Fincon INC | Bentley Scott Tate | — | (650) 452 3047 | GC, remodel, ADU | Half Moon Bay · San Mateo County | — | — |
| Fine Custom Painting INC | Evan Edward Auchard | info@finecustompainting.com | (415) 740 1600 | GC, remodel, ADU | South San Francisco · San Mateo County | — | — |
| Fine Home Carpentry And Repair | Fine Home Carpentry And Repair | — | (650) 863 1483 | GC, remodel, ADU | San Bruno · San Mateo County | — | — |
| Fine Line Painting | Fine Line Painting | — | (650) 400 8616 | Windows, patio, painters | Pacifica · San Mateo County | — | — |
| Fine Lines Design & Construction Corp | Edgar Gonzalez | fl.dcc99@gmail.com | (650) 274 6263 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Fineline Carpentry INC | Macdonald John Bean | — | (650) 592 2442 | GC, remodel, ADU | Belmont · San Mateo County | — | — |
| Fineline Fixtures | Cheryl Marie Bean | — | (650) 592 2442 | Other | Belmont · San Mateo County | — | — |
| Finish Line Roofing INC | Rolando Mazariego | — | (650) 773 3943 | Other roofers | San Mateo · San Mateo County | — | — |
| Finish-pros | Wayne Michael Impink | — | (415) 613 9709 | GC, remodel, ADU | Half Moon Bay · San Mateo County | — | — |
| Finished Concrete | Finished Concrete | — | (650) 701 6822 | Other | San Mateo · San Mateo County | — | — |
| Firas Musa Haimour | Firas Musa Haimour | — | (706) 255 1438 | GC, remodel, ADU | San Carlos · San Mateo County | — | — |
| Fire Alarm Services | Fire Alarm Services | info@firealarmsystemservices.com | (650) 815-7066 | Alarm and generators | San Mateo · San Mateo County | — | — |
| Fire Watch Guard Services San Mateo | Fire Watch Guard Services San Mateo | — | (650) 706-4887 | Alarm and generators | San Mateo · San Mateo County | — | — |
| Firefighter Tree Service | Firefighter Tree Service | — | (650) 454-0373 | Tree | Redwood City · San Mateo County | — | — |
| Firelectric LLC | Don Richard Corral | — | (415) 971 8528 | Electricians | San Bruno · San Mateo County | — | — |