| Farwest Electric Control | Michael Peter Kelley | — | (805) 423 2026 | Electricians | Paso Robles · San Luis Obispo County | — | — |
| Faulkner Const | Faulkner Const | — | (805) 801 3405 | GC, remodel, ADU | Los Osos · San Luis Obispo County | — | — |
| Felgenhauer Construction | Jess Linn Felgenhauer | — | (805) 712 4900 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Felipe's Construction | Felipe De Jesus Anguiano_alfaro | — | (805) 610 5192 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Fellman Contracting | Charles Walter Fellman | — | (805) 441 2262 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Fenvell HVAC Repair San Luis Obispo | Fenvell HVAC Repair San Luis Obispo | — | (805) 360-6458 | HVAC | San Luis Obispo · San Luis Obispo County | — | — |
| Ferguson Electrical Systems | Benjamin Drew Ferguson | info@fergusonelectricalsystems.com | (805) 748 4987 | Electricians | Los Osos · San Luis Obispo County | — | — |
| Ferrari Development INC | Ben Anthony Ferrari | — | (805) 929 1204 | Electricians | Nipomo · San Luis Obispo County | — | — |
| Ferravanti Grading & Paving | Patricia Ferravanti | — | (805) 238 9560 | Other | Paso Robles · San Luis Obispo County | — | — |
| Ferreira INC | Ferreira INC | — | (805) 242-1281 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Ferrell's Construction | Lucas James Ferrell | — | (805) 610 1891 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Ferrells Building Solutions | Ferrells Building Solutions | — | (805) 461 1901 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Ferreyra Drywall | Ferreyra Drywall | ferreyradrywall@gmail.com | (805) 904 7204 | Other | Grover Beach · San Luis Obispo County | — | — |
| Ferris Fencing INC | Shane Michael Ferris | info@ferrisfencing.com | (805) 286 6939 | GC, remodel, ADU | San Miguel · San Luis Obispo County | — | — |
| Fg Landscapes | Fg Landscapes | info@fg-landscapes.com | (820) 206 8351 | Windows, patio, painters | Paso Robles · San Luis Obispo County | — | — |
| Fgm Construction INC | Thomas James Tierney | — | (805) 423 2413 | GC, remodel, ADU | Cambria · San Luis Obispo County | — | — |
| Field Painting | Field Painting | — | (805) 704 0300 | Windows, patio, painters | Paso Robles · San Luis Obispo County | — | — |
| Figari De Carroll Landscape | Figari De Carroll Landscape | — | (805) 929 5759 | Windows, patio, painters | Nipomo · San Luis Obispo County | — | — |
| Figueroa Tree Service | Figueroa Fidel | — | (805) 345 6980 | Tree | Paso Robles · San Luis Obispo County | — | — |
| Filice Enterprises INC | Michelle May Filice | michelle@filiceenterprises.com | (805) 668 3442 | Other | Arroyo Grande · San Luis Obispo County | — | — |
| Filipponi-thompson Drilling INC | Douglas Clement Filipponi | — | (805) 466 1271 | Other | Atascadero · San Luis Obispo County | — | — |
| Fine Finish Painting | Fine Finish Painting | — | (805) 769 5327 | Windows, patio, painters | Paso Robles · San Luis Obispo County | — | — |
| Fine Line Homes | Fine Line Homes | — | (805) 772 7635 | GC, remodel, ADU | Morro Bay · San Luis Obispo County | — | — |
| Finley Electric | Paul Robert Finley | — | (805) 904 5079 | Electricians | Los Osos · San Luis Obispo County | — | — |
| Finley Family Nursery | Finley Family Nursery | finleyfarm@msn.com | (805) 434 1542 | Windows, patio, painters | Templeton · San Luis Obispo County | — | — |
| Finn Plumbing | Noel Ross Finn | info@finnplumbing.com | (805) 431-1082 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Five Cities Plumbing INC | Chad Paul Tanner | — | (805) 481 2462 | Other | Grover Beach · San Luis Obispo County | — | — |
| Five Cities Water Systems | Kristy Denise Kelley | — | (805) 481 9635 | Other | Pismo Beach · San Luis Obispo County | — | — |
| Five Star Fencing INC | Tyler James Scheidt | — | (805) 714 1205 | Other | Grover Beach · San Luis Obispo County | — | — |
| Five Star Rain Gutters INC | David James Kennedy | — | (805) 461 3283 | Other | Atascadero · San Luis Obispo County | — | — |
| Fixxa Incorporated | Keith Alan Tracy | — | (805) 471 0791 | GC, remodel, ADU | Morro Bay · San Luis Obispo County | — | — |
| Fleming Construction Group INC | Stephen James Fleming | — | (805) 206 5474 | GC, remodel, ADU | Templeton · San Luis Obispo County | — | — |
| Fletcher Building Services | Tod Fletcher Sarguis | — | (805) 215 5245 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Fletcher Electric | Ian James Fletcher | — | (805) 550 6301 | Electricians | Grover Beach · San Luis Obispo County | — | — |
| Fletcher Hesse Plumbing INC | Fletcher Aaron Hesse | — | (805) 602 2204 | Windows, patio, painters | Los Osos · San Luis Obispo County | — | — |
| Flickinger Painting INC | Corie Alan Flickinger | — | (805) 466 2859 | Windows, patio, painters | Santa Margarita · San Luis Obispo County | — | — |
| Flintstone Plumbing | Flintstone Plumbing | — | (208) 972 1388 | Other | Arroyo Grande · San Luis Obispo County | — | — |
| Floor Connection INC | Deborah Elaine Hart | — | (805) 481 2761 | Other | Arroyo Grande · San Luis Obispo County | — | — |
| Floor Savvy | Floor Savvy | — | (805) 714 8391 | Other | Grover Beach · San Luis Obispo County | — | — |
| Flooring Discount Center INC | Ethan Allen Pettenger | — | (805) 772 2211 | Other | Morro Bay · San Luis Obispo County | — | — |