| Jeff Branch Carpentry | Jeff Branch Carpentry | — | (805) 256 5024 | Other | Ventura · Ventura County | — | — |
| Jeff Carroll Construction Company | Jeffrey Edward Carroll | — | (805) 499 0423 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Jeff Coffin Construction INC | Jeff Evan Coffin | — | (805) 207 1561 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Jeff Frankel Plumbing | Jeff Frankel Plumbing | — | (818) 883 8267 | Other | Simi Valley · Ventura County | — | — |
| Jeff Gambino Plumbing | Jeff Gambino Plumbing | — | (805) 493 0203 | Other | Thousand Oaks · Ventura County | — | — |
| Jeff Guess General Contractor | Jeff Guess General Contractor | — | (805) 603 6089 | GC, remodel, ADU | Santa Paula · Ventura County | — | — |
| Jeff Kaplan Construction INC | Jeffrey Jonathan Kaplan | — | (805) 375 9970 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Jeff Linderman | Jeff Linderman | — | (805) 300 2289 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Jeff Lisheski Electric INC | Jeff Lisheski | — | (805) 320 4850 | Electricians | Ventura · Ventura County | — | — |
| Jeff T Hass Plumbing & Rooter | Jeffrey Thomas Hass | — | (805) 535 0144 | Other | Oxnard · Ventura County | — | — |
| Jeff Theveny | Jeff Theveny | — | (805) 207 5307 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Jeff Urie Custom Ceramic Tile And Stone Works | Jeffrey Scott Urie | — | (805) 558 9370 | Other | Simi Valley · Ventura County | — | — |
| Jeff Wilson Construction | Jeffery Steven Wilson | pacificavenue@aol.com | (805) 340 7588 | GC, remodel, ADU | Ojai · Ventura County | — | — |
| Jeffery David Kitchen | Jeffery David Kitchen | — | (760) 861 0686 | Electricians | Camarillo · Ventura County | — | — |
| Jeffery J Benes INC DBA Installation Non Electrical Signs | Jeffery Jay Benes | — | (818) 540 5823 | Other | Thousand Oaks · Ventura County | — | — |
| Jeffery Lynn Brower | Jeffery Lynn Brower | — | (805) 240 6098 | Other | Camarillo · Ventura County | — | — |
| Jeffery Mora | Jeffery Mora | — | (805) 822 2098 | Pool | Oxnard · Ventura County | — | — |
| Jeffery S Pennington | Jeffery S Pennington | — | (805) 758 7378 | Other | Ojai · Ventura County | — | — |
| Jeffrey Albaeck | Jeffrey Albaeck | — | (805) 432 8453 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Jeffrey Brent Schmucker | Jeffrey Brent Schmucker | — | (805) 341 3338 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Jeffrey Frankel Plumbing INC | Jeffrey Scott Frankel | — | (805) 526 6717 | Other | Simi Valley · Ventura County | — | — |
| Jeffrey Mansir Construction | Jeffrey Scott Mansir | — | (805) 901 1267 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Jeffrey P Irwin | Jeffrey P Irwin | — | (804) 796 6872 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Jem Builder | Jem Builder | — | (661) 212 5724 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Jemstreet Properties INC | Jonathan Engel Friedman | — | (805) 373 2860 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Jenkins Construction | Matthew Cambria Jenkins | — | (805) 798 0307 | GC, remodel, ADU | Ojai · Ventura County | — | — |
| Jensen Electric LLC | Kyle Dean Jensen | — | (805) 433 4900 | Electricians | Simi Valley · Ventura County | — | — |
| Jensen Wood Products | Jensen Wood Products | — | (805) 509 0332 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Jerad Rohde Tile | Jerad Michael Rohde | — | (805) 302 3576 | Other | Oxnard · Ventura County | — | — |
| Jerald Huffman | Jerald Huffman | — | (714) 944 5421 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Jere L Allison | Jere L Allison | — | (805) 485 4972 | Electricians | Oxnard · Ventura County | — | — |
| Jereco Electric | Jeremy Thomas Mcgrath | — | (805) 794 2309 | Electricians | Oak View · Ventura County | — | — |
| Jeremy Alter Electric | Jeremy Scott Alter | — | (805) 328 4157 | Electricians | Camarillo · Ventura County | — | — |
| Jeremy Dubon | Jeremy Dubon | — | (805) 889 7469 | Other | Santa Paula · Ventura County | — | — |
| Jerry Gail Painting And Design | Jerry Gail Painting And Design | — | (505) 620 1917 | Windows, patio, painters | Ventura · Ventura County | — | — |
| Jerry Heikes | Jerry Heikes | — | (805) 276 8514 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Jerry Rous Plumbing | Jerry Rous Plumbing | — | (805) 340 5204 | Other | Ventura · Ventura County | — | — |
| Jerry's Welding | Jerry's Welding | — | (805) 499 8841 | Other | Moorpark · Ventura County | — | — |
| Jesse & Bro's Construction INC | Jesus Galaviz-Hernandez | — | (805) 651 4662 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Jesse Landberg | Jesse Landberg | — | (805) 330 6888 | GC, remodel, ADU | Ventura · Ventura County | — | — |