| Fastrak Builders LLC | Jimmy Elmo Workman | — | (408) 963 7272 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| Fastrak Construction | Jerome Paul Iii Odette | — | (909) 936 0637 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Fastway | Kevin Scott Cook | — | (951) 840 2235 | HVAC | Lake Mathews · Riverside County | — | — |
| Fault Line Electric | Jiricek David | — | (949) 285 2399 | Electricians | Lake Elsinore · Riverside County | — | — |
| Fausto Felix Vega | Fausto Felix Vega | — | (951) 992 3644 | GC, remodel, ADU | Jurupa Valley · Riverside County | — | — |
| Faux You Designs INC | Terri Susan Riesenman | — | (619) 829 4024 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Fay Heating And Air Services | Evan Andrew Fay | — | (951) 850 1225 | HVAC | Menifee · Riverside County | — | — |
| Fb Electric LLC | Richard Anthony Franco | — | (951) 380 9270 | Electricians | Riverside · Riverside County | — | — |
| Fbl Construction | Francisco Brandon Jr Lujano | — | (951) 956 1057 | GC, remodel, ADU | Winchester · Riverside County | — | — |
| Fc Construction | Lechuga Abelardo | — | (951) 254 8706 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Fcf First Choice Flooring | John Skyler Devinney | — | (951) 816 1579 | Other | Murrieta · Riverside County | — | — |
| Fco Construction | Francisco Javier Rodriguez | — | (951) 760 4991 | Other | Temecula · Riverside County | — | — |
| Fcp General Contracting INC | Barret Wayne Hilzer | — | (909) 255 4562 | GC, remodel, ADU | Wildomar · Riverside County | — | — |
| Fcs Contractors INC | Ronald Ray Schmidt | david@fcscontractors.com | (949) 615 6676 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Fdc Fire Sprinklers Corp | Fernando Arias | — | (951) 255 9846 | Other | Corona · Riverside County | — | — |
| Fe Fabricators INC DBA Fe Steel Fabricators INC | Ruben Jose Varela | — | (951) 445 6265 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Fealty Electric | Daniel Ray Kemnitz | — | (951) 316 1458 | Electricians | Lake Elsinore · Riverside County | — | — |
| Fearless Petroleum Solutions LLC | Daniel Wayne Arhart | — | (909) 633 0882 | Other | Beaumont · Riverside County | — | — |
| Fedderly & Associates | Lance Robert Fedderly | — | (760) 773 5205 | GC, remodel, ADU | Palm Desert · Riverside County | — | — |
| Federal Electrical Protection Services | John Robert Leeson | — | (951) 550 9102 | Electricians | Moreno Valley · Riverside County | — | — |
| Federal Technology Solutions INC | Jacques Anthony Manciet | — | (951) 808 9660 | Electricians | Corona · Riverside County | — | — |
| Fedvet Construction | Divo Miguel Maldaner | — | (619) 271 5888 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Feel Good Pool Services | James Lee Kramer | — | (619) 755 8733 | Pool | Lake Elsinore · Riverside County | — | — |
| Fehu Home Improvement LLC | Mauricio Roberto Pensamiento | — | (931) 338 7969 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Feist Enterprises | Lawrence Wilfred Feist | — | (760) 574 1486 | GC, remodel, ADU | La Quinta · Riverside County | — | — |
| Felco General Construction | Felipe Dejesus Carrillo Cobian | — | (310) 254 6211 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| Felipe Jesus Gonzalez | Felipe Jesus Gonzalez | — | (760) 578 6204 | Other | La Quinta · Riverside County | — | — |
| Felipe Lozano Iii | Felipe Lozano Iii | — | (951) 210 0135 | Other | Romoland · Riverside County | — | — |
| Felix Fence Works | Felix Fence Works | — | (951) 384 5363 | Other | Perris · Riverside County | — | — |
| Felix Flooring | Felix Flooring | — | (951) 805 0302 | Other | Wildomar · Riverside County | — | — |
| Felix Gardening & Landscape | Felix Gardening & Landscape | — | (760) 899 7671 | Windows, patio, painters | Indio · Riverside County | — | — |
| Felix Leonel Cruz Martinez | Felix Leonel Cruz Martinez | — | (714) 200 3695 | Windows, patio, painters | Lake Elsinore · Riverside County | — | — |
| Felix Metal Works | Daniel Santiago Felix | — | (951) 549 6568 | Other | Norco · Riverside County | — | — |
| Felix Plumbing | Felix Plumbing | — | (760) 861 7474 | Other | Coachella · Riverside County | — | — |
| Felix Synthetic | Felix Rios Roberto | — | (562) 762 9537 | Other | San Jacinto · Riverside County | — | — |
| Felix's Tree And Landscaping | Felix's Tree And Landscaping | felixslandscaping@yahoo.com | (626) 221 6114 | Windows, patio, painters | Romoland · Riverside County | — | — |
| Felling Electric | Weston Avery Felling | — | (714) 624 3175 | Electricians | Corona · Riverside County | — | — |
| Fence Ellent | Jaime Diaz Ramirez | — | (951) 685 1959 | Other | Jurupa Valley · Riverside County | — | — |
| Fence Specialist | Fence Specialist | — | (951) 581 7276 | Other | Canyon Lake · Riverside County | — | — |
| Fence-ellent | Jaime Diaz Ramirez | — | (951) 685 1959 | Other | Jurupa Valley · Riverside County | — | — |