| Flooring 101 INC | Dimitrios Papanago Poulos | — | (805) 486 8887 | Other | Oxnard · Ventura County | — | — |
| Flooring 805 | Franco Ricardo | — | (818) 536 4171 | Other | Simi Valley · Ventura County | — | — |
| Florencio Martin Construction | Martin Florencio | — | (805) 844 2317 | GC, remodel, ADU | Port Hueneme · Ventura County | — | — |
| Flores Iron Works | Flores Iron Works | — | (805) 701 8593 | Other | Santa Paula · Ventura County | — | — |
| Flores Roofing | Flores Ramiro | — | (805) 512 6114 | Other roofers | Oxnard · Ventura County | — | — |
| Flores Tile And Stone INC | Roberto Antonio Flores Ayala | — | (805) 284 8623 | Other | Ventura · Ventura County | — | — |
| Fludity Pool Designs | Ryan Fitzgerald Clow | — | (805) 290 2780 | Pool | Oxnard · Ventura County | — | — |
| Focil Construction INC | Joseph Manuel Focil | — | (805) 405 9225 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Focus Building Solutions INC | Dario Pascarelli | — | (818) 825 4668 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Foley Carpentry | Benjamin Jeremy Crews Foley | — | (805) 804 7224 | Other | Ojai · Ventura County | — | — |
| Foos Construction | Travis Michael Foos | — | (310) 699 3919 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Foothill Electric | Stacey Ann Rieder | — | (805) 525 4488 | Electricians | Santa Paula · Ventura County | — | — |
| Foothill Fence Company | Darren Thomas Hicks | — | (818) 995 8380 | Other | Moorpark · Ventura County | — | — |
| Forced Air | Forced Air | — | (805) 640 7277 | HVAC | Ojai · Ventura County | — | — |
| Forefront Development INC | Shahram Jarrahi | — | (805) 857 7286 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Forefront Electric | Brian James Girsch | — | (805) 905 9702 | Electricians | Ventura · Ventura County | — | — |
| Foreman Services | Blake Ashley Foreman | — | (805) 857 8513 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Forest Born Woodcraft | Forest Born Woodcraft | — | (805) 832 1702 | Other | Ventura · Ventura County | — | — |
| Forest Construction Company INC | Daryl Jean Rice | — | (805) 386 8000 | GC, remodel, ADU | Somis · Ventura County | — | — |
| Forever Green Landscape By Robles | Jose Carlos Robles Soto | — | (805) 906 0278 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Forsite Plumbing | Forsite Plumbing | — | (805) 433 4744 | Other | Simi Valley · Ventura County | — | — |
| Forster Fabrication | Luke Luers Forster | — | (951) 210 8930 | Other | Simi Valley · Ventura County | — | — |
| Fort Gate LLC | Arash Asl Jafari | — | (818) 818 4650 | Other | Simi Valley · Ventura County | — | — |
| Forte Construction Co | Granados-juarez Roberto | info@forteconstruction.com | (805) 815 5460 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Fortifence | Medina Michael | — | (805) 420 8842 | Other | Santa Paula · Ventura County | — | — |
| Fortress Roofing | Andrew Wayne Nester | contact@fortressroofing.com | (907) 701-2233 | Other roofers | Camarillo · Ventura County | — | — |
| Fortune Companies Management Corp | Benjamin B Efraim | — | (323) 423 6262 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Fossum Tile | Fossum Tile | — | (805) 551 8453 | Other | Ventura · Ventura County | — | — |
| Four Seasons Heating & Cooling INC | Robert Raymond Carmody | — | (805) 642 2519 | HVAC | Ventura · Ventura County | — | — |
| Four-tech Glass INC DBA The Glass Guys | Diego Enrique Torres | — | (805) 526 3067 | Windows, patio, painters | Moorpark · Ventura County | — | — |
| Fourest Tree Service INC | Annaisa Madrigal Sanchez | — | (800) 906 6574 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Fouts Electric Corp | Scott James Fouts | — | (805) 529 0385 | Electricians | Moorpark · Ventura County | — | — |
| Fox Cast Stone INC | Michael Liska | — | (805) 259 6278 | Other | Camarillo · Ventura County | — | — |
| Fox Woodworking | Fox Woodworking | — | (805) 947 6935 | Other | Ventura · Ventura County | — | — |
| Foxbuilt INC | Robert Anthony Riedell | — | (805) 341 0428 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Foxstone Development INC | Leschinsky Sergey | info@foxstonedevelopment.com | (818) 535 9509 | Other | Simi Valley · Ventura County | — | — |
| Fpm Building & Consulting | Fpm Building & Consulting | — | (805) 522 5009 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Fraker Fire Protection INC | Daniel Edward Fraker | — | (818) 825 0650 | Electricians | Westlake Village · Ventura County | — | — |
| Fraley Electric INC | Eric Alan Fraley | fraleyelectric@gmail.com | (805) 377-7019 | Electricians | Newbury Park · Ventura County | — | — |
| Framing Square Construction | Mitchell Richard Peters | — | (805) 501 7836 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |