| R & R Steel INC | Juan Candelario Ramirez | — | (661) 567 8220 | Other | Bakersfield · Kern County | — | — |
| R & S Fencing | Salvador Jr Marin | — | (661) 809 4159 | Other | Delano · Kern County | — | — |
| R & S General & Electrical Contracting | Randy Russell Simonsen | — | (661) 201 4800 | Electricians | Bakersfield · Kern County | — | — |
| R - C Electric | Cruz Ricardo | — | (661) 246 5389 | Electricians | Bakersfield · Kern County | — | — |
| R And R Paint And Finishing | Raymond Fabela | — | (818) 267 6995 | Windows, patio, painters | Rosamond · Kern County | — | — |
| R B G Plumbing | R B G Plumbing | — | (323) 799 8749 | Other | Bakersfield · Kern County | — | — |
| R C Enterprizes | R C Enterprizes | — | (661) 203 6439 | Other | Bakersfield · Kern County | — | — |
| R C Installations INC | Jesus Roberto Cabral Medrano | — | (424) 221 1434 | Windows, patio, painters | Bakersfield · Kern County | — | — |
| R C L Welding INC | Rosendo Mojarro Lopez | — | (661) 344 6192 | Other | Bakersfield · Kern County | — | — |
| R C Tree Services | Sandra Livier Medina | — | (661) 431 2423 | Tree | Bakersfield · Kern County | — | — |
| R Crane Construction | Randy Lee Crane | — | (408) 828 5314 | GC, remodel, ADU | Mountain Mesa · Kern County | — | — |
| R D Welding | R D Welding | — | (661) 333 3829 | Other | Bakersfield · Kern County | — | — |
| R E D Electric | Robert Edward Dickson | — | (760) 499 7437 | Electricians | Ridgecrest · Kern County | — | — |
| R E D Electric INC | Robert Edward Dickson | — | (760) 499 7437 | Electricians | Ridgecrest · Kern County | — | — |
| R Henthorn Painting | R Henthorn Painting | — | (661) 421 7197 | Windows, patio, painters | Bakersfield · Kern County | — | — |
| R J Fire Sprinkler Systems INC | Randall James Cazier | — | (661) 822 1912 | Other | Tehachapi · Kern County | — | — |
| R J Remodel / Construction | Rupert Jerry Allison | — | (209) 237 8066 | GC, remodel, ADU | Wofford Heights · Kern County | — | — |
| R J's Plumbing | R J's Plumbing | — | (661) 304 0036 | Other | Bakersfield · Kern County | — | — |
| R K Power Engineering INC DBA Alfa Electric | Raman Kumar | — | (661) 412 1838 | Electricians | Bakersfield · Kern County | — | — |
| R L Environmental INC | Steven Patrick Heidelberger | — | (661) 328 0802 | Electricians | Shafter · Kern County | — | — |
| R L H Fire Protection INC | Geoffrey Ross Kallenberger | — | (661) 322 9344 | Electricians | Bakersfield · Kern County | — | — |
| R L Hall Enterprises INC | Richard Loyd Hall | — | (661) 978 5256 | Electricians | Bakersfield · Kern County | — | — |
| R L Mc Cormack Construction | Robert Lee Mc Cormack | — | (661) 742 7908 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| R L Redfeairn Drilling INC | Rick Linn Sr Redfeairn | — | (661) 831 0976 | Other | Bakersfield · Kern County | — | — |
| R L S Construction Services INC | Richard Lynn Surratt | — | (760) 382 4327 | GC, remodel, ADU | Ridgecrest · Kern County | — | — |
| R L S Electric | Ronald Lee Sogge | — | (661) 242 1930 | Electricians | Pine Mountain Club · Kern County | — | — |
| R M Guy Electric | Richard Mark Guy | — | (818) 577 5942 | Electricians | Kernville · Kern County | — | — |
| R M P Pools & Spas | Ross Warren Menzel | — | (760) 499 1977 | Pool | Ridgecrest · Kern County | — | — |
| R M Stowell Const Co | Robert Mason Jr Stowell | — | (661) 245 4714 | GC, remodel, ADU | Frazier Park · Kern County | — | — |
| R N D Plumbing | R N D Plumbing | — | (661) 390 8990 | GC, remodel, ADU | Tehachapi · Kern County | — | — |
| R R Edmondson Builders INC | Ronald Ray Edmondson | — | (661) 494 9116 | GC, remodel, ADU | Tehachapi · Kern County | — | — |
| R S Byers Automation | R S Byers Automation | — | (661) 865 6808 | Electricians | Bakersfield · Kern County | — | — |
| R S T Cranes INC | Richard Torres | rstcranes@rstcranes.com | (661) 822 7477 | Other | Tehachapi · Kern County | — | — |
| R S Tile | R S Tile | — | (661) 304 5294 | GC, remodel, ADU | Wasco · Kern County | — | — |
| R U Construction | Uribe Raul | — | (661) 201 4309 | GC, remodel, ADU | Shafter · Kern County | — | — |
| R&j Accomplished Builders INC | Daniel De Jesus Landeros | — | (424) 536 5409 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| R&r Builders LLC | Daniel Reyes | — | (661) 794 9368 | GC, remodel, ADU | Rosamond · Kern County | — | — |
| R&s Construction Builders INC | Mendez Raul Santos | — | (805) 670 3734 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| R5 Electric | Wilson Michael Redfeairn | — | (661) 525 6887 | Electricians | Bakersfield · Kern County | — | — |
| Racer Rob's Plumbing Repair And Locating | Robert Charles Heck | — | (760) 269 5682 | Other | California City · Kern County | — | — |