| Johnson & Sons Plumbing INC | Larry Joe Johnson | — | (661) 323 2692 | Other | Bakersfield · Kern County | — | — |
| Johnson's Painting | Johnson's Painting | — | (661) 448 4451 | Windows, patio, painters | Bakersfield · Kern County | — | — |
| Joint Construction INC | Robert Kenneth Foster | — | (661) 320 8400 | Other | Bakersfield · Kern County | — | — |
| Jon C Damon Construction | Jonathan Craig Damon | — | (805) 766 4145 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Jon Rogers Electric | Jonathan Dale Rogers | — | (661) 599 5283 | Electricians | Bakersfield · Kern County | — | — |
| Jon Rowles Construction INC | Jonathan David Rowles | — | (661) 337 9039 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Jonathan Ramirez Steel Fabricators | Jonathan Ramirez Steel Fabricators | — | (951) 905 2827 | Other | Bakersfield · Kern County | — | — |
| Jordan J Bartlett | Jordan J Bartlett | — | (760) 417 1265 | Other | Bakersfield · Kern County | — | — |
| Jordan Tile | Jordan Tile | — | (760) 608 2066 | Other | Ridgecrest · Kern County | — | — |
| Jorge Luis Alvarez | Jorge Luis Alvarez | — | (626) 475 6925 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Josco Construction INC | Vernon Eugene Jr Jones | — | (661) 328 1243 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Jose A Vasquez Enterprises INC | Leo Konrad Spanner | — | (760) 375 4066 | Other roofers | Ridgecrest · Kern County | — | — |
| Jose Higuera | Jose Higuera | — | (661) 733 6566 | GC, remodel, ADU | Rosamond · Kern County | — | — |
| Jose Ignasio Romero | Jose Ignasio Romero | — | (661) 748 6328 | Other | Bakersfield · Kern County | — | — |
| Jose Jesus Heredia Rodriguez | Jose Jesus Heredia Rodriguez | — | (661) 319 9020 | Other | Wasco · Kern County | — | — |
| Jose Luis Lagunas | Jose Luis Lagunas | — | (661) 213 5558 | HVAC | Bakersfield · Kern County | — | — |
| Jose Pena Hernandez | Jose Pena Hernandez | — | (661) 577 2899 | Other | Bakersfield · Kern County | — | — |
| Jose Raul Portlla-flores | Jose Raul Portlla-flores | — | (661) 302 0533 | Other | Bakersfield · Kern County | — | — |
| Jose Villalobos | Jose Villalobos | — | (661) 444 9307 | HVAC | Bakersfield · Kern County | — | — |
| Joseph Andrew Ramos DBA Titanium Construction | Joseph Andrew Ramos | — | (661) 246 8059 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Joseph Digiacomo | Joseph Digiacomo | — | (661) 303 2663 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Journey Air Conditioning Co INC | Randall Clifton Journey | — | (661) 322 1633 | HVAC | Bakersfield · Kern County | — | — |
| Jp Construction | Paul Julie | enquiries@jp-construction.com | (797) 389-9953 | GC, remodel, ADU | Frazier Park · Kern County | — | — |
| Jp Hess INC | Joseph Preston Hess | — | (661) 410 9179 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Jr & Co Flooring Company | Jesus Yoatan Ramirez Barajas | — | (661) 364 9721 | Other | Bakersfield · Kern County | — | — |
| Jr Plumbing Construction | Rivera Osorio Javier | — | (661) 859 8358 | Other | Bakersfield · Kern County | — | — |
| Jr's Construction | John Scott Jr Rice | — | (661) 978 0647 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Jr's Finish Carpentry LLC | Javier Jr Maciel | — | (661) 204 2772 | Other | Bakersfield · Kern County | — | — |
| Js Electric | Jacob Patrick Snyder | — | (661) 557 8166 | Electricians | Tehachapi · Kern County | — | — |
| Js' Garden Works LLC | Jose Isabel Pined| Valenzuela Jose I Pineda Valenzuela | — | (661) 330 7295 | Windows, patio, painters | Bakersfield · Kern County | — | — |
| Jsa Building Construction INC | Lara Alejandro Lopez | — | (661) 889 1166 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Jti Electrical & Instrumentation LLC | Stan Shae Johnson | — | (661) 393 5535 | Electricians | Shafter · Kern County | — | — |
| Juan Arevalo | Juan Arevalo | — | (310) 404 4792 | HVAC | Bakersfield · Kern County | — | — |
| Juan Eloy Martinez | Juan Eloy Martinez | — | (956) 638 9002 | HVAC | Shafter · Kern County | — | — |
| Juan Flores Carbajal | Juan Flores Carbajal | — | (661) 394 0154 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Juan Gomez | Juan Gomez | — | (661) 302 3020 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Juan Gonzalez | Juan Gonzalez | — | (805) 843 2180 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Juan Graciliano | Juan Graciliano | — | (661) 910 3655 | HVAC | Shafter · Kern County | — | — |
| Juan H Hernandez | Juan H Hernandez | — | (661) 304 3197 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Juan's Tile | Juan's Tile | — | (661) 916 8317 | Other | Rosamond · Kern County | — | — |