| Fire Alert INC | Thomas Lee Brim | — | (408) 723 2223 | Electricians | Ben Lomond · Santa Cruz County | — | — |
| Fire Watch Guard Services Santa Cruz | Fire Watch Guard Services Santa Cruz | — | (831) 200-4854 | Alarm and generators | Santa Cruz · Santa Cruz County | — | — |
| Firm HVAC Repair Santa Cruz | Firm HVAC Repair Santa Cruz | — | (831) 330-7822 | HVAC | Santa Cruz · Santa Cruz County | — | — |
| First Alarm | Jarl Erving Saal | — | (831) 476 1111 | Electricians | Aptos · Santa Cruz County | — | — |
| First Choice Builders | First Choice Builders | — | (831) 588 1339 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Fisher Electric INC | Phylliss Annette Fisher | — | (831) 345 7463 | Electricians | Scotts Valley · Santa Cruz County | — | — |
| Fishman Electric | Maxwell James Dean Somerville | — | (831) 888 7756 | Electricians | Santa Cruz · Santa Cruz County | — | — |
| Flautt Electric INC | Jeremy Lance Flautt | — | (831) 212 1603 | Electricians | Capitola · Santa Cruz County | — | — |
| Flores Construction INC | Alex Kent Flores | — | (831) 818 9943 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Flores Floors | Flores Floors | — | (831) 325 5293 | GC, remodel, ADU | Soquel · Santa Cruz County | — | — |
| Flowers Brothers Construction A Partnership | Randy Scott Flowers | — | (320) 333 0871 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Focus Energy LLC | Matthew David Ellis | — | (931) 713 8855 | Electricians | Aptos · Santa Cruz County | — | — |
| Forte Construction | Najera Javier | — | (831) 239 7006 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Fortified | Mark Douglas Fort | — | (408) 499 6738 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Four Seasons Gardening | Four Seasons Gardening | — | (831) 359 9582 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| Fox Building Group LLC | Thai Shawn Fox | — | (831) 888 7863 | GC, remodel, ADU | Soquel · Santa Cruz County | — | — |
| Foy Construction | Gregory William Foy | — | (831) 239 8780 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Francis Colligan | Francis Colligan | — | (831) 325 9272 | Electricians | Soquel · Santa Cruz County | — | — |
| Francis Plumbing INC | Robert Francis Iii Lane | — | (669) 273 3205 | Other | Felton · Santa Cruz County | — | — |
| Francisco's Painting | Francisco's Painting | — | (831) 251 2029 | Windows, patio, painters | Aptos · Santa Cruz County | — | — |
| Frank Iadiano Construction | Frank Michael Iadiano | — | (831) 818 6363 | GC, remodel, ADU | Soquel · Santa Cruz County | — | — |
| Frank J Contreras Construction | Frank Jose Contreras | — | (831) 345 8074 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Frank's Construction | Frank Melvin Avalos Rivera | — | (831) 212 1840 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Fred Justin Lotz | Fred Justin Lotz | — | (831) 252 3767 | GC, remodel, ADU | Ben Lomond · Santa Cruz County | — | — |
| Frederic Lattanzio General Contractor | Frederic Lattanzio General Contractor | — | (831) 251 5383 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Freedom Communications | Freedom Communications | — | (831) 234 2308 | Other | Freedom · Santa Cruz County | — | — |
| Freedom Earthworks | Freedom Earthworks | dgomez@freedomearthworks.com | (831) 406 7743 | Other | Freedom · Santa Cruz County | — | — |
| Freedom Heating INC | Blanca Marisol Johnston | — | (831) 724 8900 | HVAC | Freedom · Santa Cruz County | — | — |
| Freedom Landscaping | Freedom Landscaping | — | (831) 498 0593 | Windows, patio, painters | Freedom · Santa Cruz County | — | — |
| Freedom Signs | Freedom Signs | info@freedomsigns.com | (831) 840 6415 | Other | Watsonville · Santa Cruz County | — | — |
| Freeman Construction | Samuel Diggs Iv Freeman | — | (831) 325 8024 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Fresh Face Cabinet Refacing | Fresh Face Cabinet Refacing | — | (831) 227 3779 | Other | Watsonville · Santa Cruz County | — | — |
| Freshtone Painting | Freshtone Painting | — | (831) 322 8329 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| Frey Landscaping | Frey Landscaping | — | (831) 335 9200 | Windows, patio, painters | Felton · Santa Cruz County | — | — |
| Frg Solutions | Frg Solutions | — | (831) 419 0263 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Friendly Appliances Installation LLC | Ranieri Nunes Araujo | — | (831) 325 1281 | Other | Santa Cruz · Santa Cruz County | — | — |
| Friticon HVAC Repair Santa Cruz | Friticon HVAC Repair Santa Cruz | — | (831) 330-8833 | HVAC | Santa Cruz · Santa Cruz County | — | — |
| Frog And Toad Carpentry LLC | Michael Patrick Liguori | — | (831) 332 1159 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Frontline Construction | Jack Gaines Farren | — | (831) 706 7667 | GC, remodel, ADU | Capitola · Santa Cruz County | — | — |
| Full Bloom Garden's INC | Carole Kraft Edwards | — | (831) 429 8339 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |