| Fix My A C Incorporated | Avraham Wingarten | — | (949) 939 2949 | HVAC | Chino Hills · San Bernardino County | — | — |
| Fixd Construction Co | Damien Mark Melle | — | (877) 947 3493 | GC, remodel, ADU | Ontario · San Bernardino County | — | — |
| Fixed Plumbing INC | Andrew Ryan Fleming | — | (909) 678 2231 | Other | Rancho Cucamonga · San Bernardino County | — | — |
| Fixit Construction Group | Maryea Y Morton | — | (909) 231 9700 | GC, remodel, ADU | Fontana · San Bernardino County | — | — |
| Fj Construction Svcs | Fernando Ivan Juarez | — | (909) 538 1718 | GC, remodel, ADU | San Bernardino · San Bernardino County | — | — |
| Flaco's Tree Service | Aguinaga Vanessa | — | (951) 545 1309 | Other | Phelan · San Bernardino County | — | — |
| Flamenco Drywall Construction | Edwin Ronald Flamenco | — | (714) 707 0706 | Other | Chino Hills · San Bernardino County | — | — |
| Flanders Painting | Michael Eugene Zweber | zpaintingoffice@gmail.com | (909) 273 0466 | Windows, patio, painters | Lake Arrowhead · San Bernardino County | — | — |
| Flanigan Construction INC | Daniel Ray Flanigan | — | (909) 792 6740 | GC, remodel, ADU | Redlands · San Bernardino County | — | — |
| Flatiron Dragados Usa INC | Richard Michal Grabinski | — | (909) 597 8413 | Other | Chino · San Bernardino County | — | — |
| Flawless Tile | Nicholas Edward Jr Martinez | — | (626) 709 8130 | Other | Hesperia · San Bernardino County | — | — |
| Fleming Painting INC | Troy Ellis Fleming | — | (909) 944 7976 | Windows, patio, painters | Alta Loma · San Bernardino County | — | — |
| Fletch Electric | Christopher Robert Fletcher | — | (951) 538 6058 | Electricians | Highland · San Bernardino County | — | — |
| Flex General Construction Corp | Franco Julian Estrada | — | (909) 342 9615 | GC, remodel, ADU | Chino · San Bernardino County | — | — |
| Flo Construction LLC | Flores-alvarez Ivan | — | (909) 273 3772 | GC, remodel, ADU | Twin Peaks · San Bernardino County | — | — |
| Flood Damage Cleanup Service | Flood Damage Cleanup Service | — | (909) 903-6928 | Restoration | San Bernardino · San Bernardino County | — | — |
| Floor Decor INC | Donna Tillman | — | (909) 920 5383 | Other | Upland · San Bernardino County | — | — |
| Floor Mastery INC | Ricardo Enrique Mendoza | — | (951) 662 0036 | Other | San Bernardino · San Bernardino County | — | — |
| Floor Plans Construction & Development INC | Kellie Lynne Foster | — | (714) 729 8900 | GC, remodel, ADU | Redlands · San Bernardino County | — | — |
| Floored Tile & Stone | John Wesley Bateman | — | (909) 574 8090 | Other | Fontana · San Bernardino County | — | — |
| Florentino's Flooring INC | Sylvia Marie Florentino | — | (909) 727 0906 | Other | Upland · San Bernardino County | — | — |
| Flores Building | Flores Building | — | (909) 226 2802 | GC, remodel, ADU | Ontario · San Bernardino County | — | — |
| Flores Concrete | Flores Concrete | — | (760) 713 3329 | Other | Hesperia · San Bernardino County | — | — |
| Flores Construction | Kevin Yordin Flores | — | (909) 687 6260 | GC, remodel, ADU | Fontana · San Bernardino County | — | — |
| Flores Custom Tile Design | Corona Hector Flores | — | (562) 665 3369 | Other | Fontana · San Bernardino County | — | — |
| Flores Electric | Marcial Medrano Flores | — | (760) 686 0193 | Electricians | Hesperia · San Bernardino County | — | — |
| Flores Finish Carpentry | Flores Finish Carpentry | — | (626) 862 4491 | Other | Rancho Cucamonga · San Bernardino County | — | — |
| Flores Pool Services | Marvin Vinicio Flores | — | (619) 920-8661 | Pool | Fontana · San Bernardino County | — | — |
| Flores Telecommunications INC | Shawn Manuel Flores | — | (909) 567 6875 | Electricians | Highland · San Bernardino County | — | — |
| Florescape Landscape Construction | Nathan Flores | — | (909) 770 0589 | GC, remodel, ADU | Rialto · San Bernardino County | — | — |
| Florida Exposition Services Of North Carolina | Robert Kenton Rozar | — | (800) 428 0123 | Other | Oak Hills · San Bernardino County | — | — |
| Flow Dynamics INC | John Patrick Mc Carthy | — | (909) 930 5522 | Other | Ontario · San Bernardino County | — | — |
| Flow Line Concrete | Flow Line Concrete | — | (310) 991 8284 | Other | Big Bear City · San Bernardino County | — | — |
| Flow Rite Backflow Prevention & Repair | Shane Michael Washam | — | (909) 214 9137 | Other | Ontario · San Bernardino County | — | — |
| Flowright Plumbing | James Christopher Opitz | — | (909) 247 8022 | Other | Rialto · San Bernardino County | — | — |
| Fly Aire Heating & Air Conditioning | Sandoval Esteban | — | (626) 678 5747 | HVAC | San Bernardino · San Bernardino County | — | — |
| Flying Dutchman Electric | Jan Dominicus Quakkelsteyn | quiryn@aol.com | (909) 263 5011 | Electricians | Chino Hills · San Bernardino County | — | — |
| Flynn Plumbing Co | Kenneth Lee Flynn | info@flynnplumbing.com | (760) 247 6932 | Other | Apple Valley · San Bernardino County | — | — |
| Fm Construction | Martinez Fernando | — | (909) 587 9187 | GC, remodel, ADU | Fontana · San Bernardino County | — | — |
| Fma General Construction | Cornejo Rigoberto Sanchez | — | (951) 764 8154 | GC, remodel, ADU | San Bernardino · San Bernardino County | — | — |