| Firemex Solutions INC | Gonzalez Oscar Lara | — | (844) 661 3473 | Other | Brisbane · San Mateo County | — | — |
| Fireside Security | Guido Rene Rodriguez | info@firesidesecurity.com | (650) 341 4600 | Electricians | Redwood City · San Mateo County | — | — |
| Firm Construction Company | Cesario Sanchez Ocampo | — | (650) 271 6436 | Electricians | South San Francisco · San Mateo County | — | — |
| First Equity Property Management | First Equity Property Management | — | (650) 349-7233 | Property managers | San Mateo · San Mateo County | — | — |
| First Glass Co | Eslamjou Peiman | — | (650) 440 3731 | Windows, patio, painters | San Mateo · San Mateo County | — | — |
| First Stage Electric LLC | Jose Lauro Vega | firststageelectric@yahoo.com | (650) 224 9305 | Electricians | San Mateo · San Mateo County | — | — |
| First Step Builders INC | Yogev Avraham Sr Buskila | — | (310) 704 7697 | GC, remodel, ADU | Foster City · San Mateo County | — | — |
| Five Star Development | Five Star Development | — | (650) 464 1577 | Electricians | San Gregorio · San Mateo County | — | — |
| Five Star Property Management | San Mateo Ca | Five Star Property Management | San Mateo Ca | — | (650) 435-5906 | Property managers | Burlingame · San Mateo County | — | — |
| Five Star Water Heaters | Five Star Water Heaters | — | (650) 720 0589 | Other | Belmont · San Mateo County | — | — |
| Fjord Construction | Lyssand Johan | — | (650) 245 5497 | GC, remodel, ADU | Emerald Hills · San Mateo County | — | — |
| Fjt Structures LLC | Chad John Mcmills | — | (650) 460 7725 | GC, remodel, ADU | San Carlos · San Mateo County | — | — |
| Flat Rate Plumbing And Drain | Flat Rate Plumbing And Drain | — | (650) 274 6281 | Other | San Mateo · San Mateo County | — | — |
| Fleming Plumbing Services | Michael Lee Fleming | — | (650) 743 5250 | Other | San Carlos · San Mateo County | — | — |
| Fllopez Construction | Lopez Fernando Lopez | — | (442) 300 1049 | GC, remodel, ADU | South San Francisco · San Mateo County | — | — |
| Flood Construction | Jeffrey Robert Flood | — | (650) 520 6224 | GC, remodel, ADU | Burlingame · San Mateo County | — | — |
| Floor Covering Contractor | Floor Covering Contractor | — | (415) 336 7979 | Other | Daly City · San Mateo County | — | — |
| Floor Effects | Floor Effects | — | (650) 574 0457 | Other | Belmont · San Mateo County | — | — |
| Floor O'rama | Floor O'rama | — | (408) 832 2337 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Flooring Contractor LLC | Luis Guillermo Guevara | — | (650) 759 1397 | Other | Redwood City · San Mateo County | — | — |
| Floors To Go | Floors To Go | — | (650) 726 7756 | Other | Half Moon Bay · San Mateo County | — | — |
| Floorsbynolan | Nolan John Alcaraz | — | (650) 291 4086 | Other | El Granada · San Mateo County | — | — |
| Flora Farm Nursery | Flora Farm Nursery | — | (650) 726 9223 | Windows, patio, painters | Half Moon Bay · San Mateo County | — | — |
| Flores Construction | Concepcion Flores Perez | — | (650) 274 6133 | GC, remodel, ADU | Redwood City · San Mateo County | — | — |
| Florian Industries INC | Charles Samuel Jr Lutz | — | (415) 330 9000 | GC, remodel, ADU | Brisbane · San Mateo County | — | — |
| Flow Masters Plumbing INC | Fergal Sean Mc Mahon | rcruz@wsiprioritymedia.net | (415) 751 1933 | HVAC | Daly City · San Mateo County | — | — |
| Flow Tec INC | Andy Stelios Kouerinis | — | (415) 992 1919 | Other | Pacifica · San Mateo County | — | — |
| Flower Power Gardens | Flower Power Gardens | ian@flowerpowergardens.com | (415) 385 8861 | Windows, patio, painters | Half Moon Bay · San Mateo County | — | — |
| Flowers Electric & Service Co | Don Jeffrey Flowers | — | (650) 583 9260 | Electricians | South San Francisco · San Mateo County | — | — |
| Flowers Electric & Service Co INC | Travis John Flowers | — | (650) 583 9260 | Electricians | South San Francisco · San Mateo County | — | — |
| Fluharty Construction INC | Michael Allen Fluharty | — | (650) 303 3563 | GC, remodel, ADU | La Honda · San Mateo County | — | — |
| Flynn Glass & Sash | Flynn Glass & Sash | — | (650) 873 1785 | GC, remodel, ADU | South San Francisco · San Mateo County | — | — |
| Fog City Construction | Victoria Danielle Chekene | — | (415) 517 1287 | GC, remodel, ADU | Daly City · San Mateo County | — | — |
| Fog City Construction INC | Stephanie Ann Wu | — | (650) 243 3043 | GC, remodel, ADU | South San Francisco · San Mateo County | — | — |
| Folau Construction | Penisimani Tahifisi Folau | — | (650) 504 0878 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Foley Electric INC | Scott Robert Zeltmann | info@foleyelectric.com | (650) 369 2878 | Electricians | Redwood City · San Mateo County | — | — |
| For Your Gardens' Needs | For Your Gardens' Needs | — | (630) 333 0128 | Windows, patio, painters | S San Francisco · San Mateo County | — | — |
| Forbes Construction | Mark Lawrence Forbes | — | (415) 515 3479 | GC, remodel, ADU | San Bruno · San Mateo County | — | — |
| Force-1 Scaffolding INC | Diego Encino Monterrosa | — | (415) 573 5912 | Other | San Bruno · San Mateo County | — | — |
| Forced Air Systems INC | Dolling Andrew | — | (415) 706 2221 | HVAC | San Carlos · San Mateo County | — | — |