| Fletcher Home Construction | Michael John Roderick | — | (951) 970 2771 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Flex Duct Cleaning INC | Jose Roberto Moreno Nieto | — | (714) 568 8665 | Other | Jurupa Valley · Riverside County | — | — |
| Flex Plumbing INC | Christopher Justin Williamson | — | (951) 313 3381 | Other | Moreno Valley · Riverside County | — | — |
| Flex-com INC | Castorena Gallegos Frank | — | (951) 454 8185 | Other | Lake Elsinore · Riverside County | — | — |
| Flexwire | Shane Bryant Bogdan | — | (951) 200 5152 | Other | Murrieta · Riverside County | — | — |
| Flo Star Plumbing And Drain | Flo Star Plumbing And Drain | — | (714) 884 0141 | Other | Norco · Riverside County | — | — |
| Flo's Plumbing INC | Florentino Garcia Carrillo | — | (760) 323 8040 | Other | Palm Springs · Riverside County | — | — |
| Flo-electric | Christopher Martin Flores | info@flo-electric.com | (949) 416 4994 | Electricians | Corona · Riverside County | — | — |
| Flo-masters Plumbing INC | Joseph Tyler Martinez | — | (951) 970 0522 | Other | Lake Elsinore · Riverside County | — | — |
| Floco INC DBA Dan's Plumbing | Flores Daniel | — | (760) 834 5541 | Other | Indio · Riverside County | — | — |
| Flood 1 Restoration | Flood 1 Restoration | — | (888) 432 4373 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Flood Fighters Restoration | Manuel Ruben Contreras | — | (619) 955 9504 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| Flood Force INC | Francisco Javier Rios | — | (951) 837 7816 | Other | Murrieta · Riverside County | — | — |
| Flood Response LLC | Scott Duane Young | — | (760) 343 3933 | GC, remodel, ADU | Thousand Palms · Riverside County | — | — |
| Floor Co | Blanca G Mohajeri | — | (714) 200 7099 | Other | Corona · Riverside County | — | — |
| Floor Covering Installation Residential & Commercial | William Bladimir Ayala Aguilar | — | (747) 220 2455 | Other | Perris · Riverside County | — | — |
| Floor Smarts INC | Alcantara Esteban | — | (951) 287 6772 | Other | Temecula · Riverside County | — | — |
| Floor Specialist | Floor Specialist | — | (714) 470 6533 | Other | Corona · Riverside County | — | — |
| Floor To Ceiling Home Renovation INC | Mendez Alberto Martinez | — | (909) 244 6877 | GC, remodel, ADU | Hemet · Riverside County | — | — |
| Floor To Ceiling Installation INC | Martha Jane Smith | — | (714) 447 9996 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Floor To Ceiling Remodeling & Restoration | Corey James Denny | — | (951) 990 7313 | GC, remodel, ADU | Perris · Riverside County | — | — |
| Floor'n It INC | Cisneros-ramirez Jose | — | (951) 616 9994 | Other | Riverside · Riverside County | — | — |
| Flooring Concepts Int'l | John Walter Piurek | — | (760) 668 1047 | Other | Cathedral City · Riverside County | — | — |
| Flooring Innovations | William David Nicholson | — | (760) 342 2222 | Other | Palm Desert · Riverside County | — | — |
| Flooring Innovators | Christopher Acosta | — | (951) 462 8110 | Other | Riverside · Riverside County | — | — |
| Flooring Kings | Flooring Kings | — | (951) 760 0854 | Other | Hemet · Riverside County | — | — |
| Flooring Md | Mark Ethan Brodie | — | (951) 514 5432 | Other | Murrieta · Riverside County | — | — |
| Flooring Service | Bernal Justino Amaro | — | (714) 860 6684 | Other | Perris · Riverside County | — | — |
| Flooring X INC | Feras Yacoub Eideh | — | (714) 642 6000 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| Floorizon | Mauricio Alexander Vidal | — | (951) 425 8308 | Other | Jurupa Valley · Riverside County | — | — |
| Floors & More | Floors & More | — | (951) 276 1770 | Other | Riverside · Riverside County | — | — |
| Floors By Aviles INC | Jesus Aviles | — | (562) 212 4076 | Other | Hemet · Riverside County | — | — |
| Floors On Demand INC | Manuel Mendiola | — | (714) 768 0291 | Other | Menifee · Riverside County | — | — |
| Floorwerx Tile And Stone | Floorwerx Tile And Stone | — | (951) 640 9662 | Other | Menifee · Riverside County | — | — |
| Floorxpress Company INC | Victor Alejandro Ramos | — | (714) 423 6058 | Other | Corona · Riverside County | — | — |
| Flores & Sons Construction INC | Jose Guadalupe Flores | — | (951) 789 0974 | GC, remodel, ADU | Perris · Riverside County | — | — |
| Flores Construction | Flores Contreras Martin | — | (323) 608 3449 | GC, remodel, ADU | Jurupa Valley · Riverside County | — | — |
| Flores Construction Design INC | Flores Hebeher | — | (714) 235 6510 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Flores Electric | Jose Francisco Flores | — | (760) 895 3546 | Electricians | Indio · Riverside County | — | — |
| Flores Gardening Co | Antonio Flores Elizalde | — | (760) 578 8806 | Windows, patio, painters | Cathedral City · Riverside County | — | — |