| Thomas O Crumplar Jr_dba T C A Specialized Services | Thomas Overton Jr Crumplar | — | (805) 509 1049 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Thomas Roth Cabinets And Furniture | Thomas Roth Cabinets And Furniture | — | (805) 895 8174 | Other | Ojai · Ventura County | — | — |
| Thomas W Carroll | Thomas W Carroll | — | (805) 218 9700 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Thomasbuilt INC | Jeffrey William Thomas | — | (805) 907 2200 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Thompco INC | Kelly Scott Brown | — | (805) 933 8048 | Other | Santa Paula · Ventura County | — | — |
| Thompson Builders | Thompson Builders | — | (805) 404 3528 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Thompson Framing INC | Brad Chris Thompson | — | (818) 419 4717 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Thompson Woodworks | Thompson Woodworks | — | (805) 658 2130 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Thomson Electric INC | Daniel Wade Thomson | — | (805) 479 3208 | Electricians | Camarillo · Ventura County | — | — |
| Thor Electric INC | Ryan Andrew Thordsen | — | (805) 813 1472 | Electricians | Simi Valley · Ventura County | — | — |
| Thousand Oaks Custom Painting | Thousand Oaks Custom Painting | — | (805) 432 4748 | Windows, patio, painters | Camarillo · Ventura County | — | — |
| Thousand Oaks Electric | Lorcan Laurence O'neill | lorcan@thousandoakselectric.com | (818) 429-4497 | Electricians | Newbury Park · Ventura County | — | — |
| Thousand Oaks Glass & Mirror | Thousand Oaks Glass & Mirror | — | (805) 491 1600 | Windows, patio, painters | Westlake Village · Ventura County | — | — |
| Thousand Oaks Tile | Thousand Oaks Tile | — | (805) 905 9641 | Other | Thousand Oaks · Ventura County | — | — |
| Three Clovers Roofing | Justin Robert Yarnell | — | (805) 304 9385 | Other roofers | Simi Valley · Ventura County | — | — |
| Three Dimensional Builders | Three Dimensional Builders | — | (805) 648 2355 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Three-five-seven Const & Plumbing | Three-five-seven Const & Plumbing | — | (805) 844 6201 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Thunder Electric INC | Rivera Santos Rauda | — | (805) 420 9480 | Electricians | Santa Paula · Ventura County | — | — |
| Thurman Audio Video INC | John Franklin Thurman | — | (818) 723 2817 | Other | Thousand Oaks · Ventura County | — | — |
| Tidal Construction And Electric | Steven Donald Walmann | — | (805) 207 0976 | Electricians | Camarillo · Ventura County | — | — |
| Tidwell Excavating | Luis Alberto Armona | — | (805) 647 4707 | Other | Ventura · Ventura County | — | — |
| Tidy Renovations | Tidy Renovations | — | (818) 272 4392 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Tierra Build Krew Construction INC | Yvonne Denise Landivar | — | (805) 607 4238 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Tiger's Painting | Tiger's Painting | — | (805) 890 6912 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Tightline Finishes Painting Company | Enrique Alfonso Mejia Martinez | — | (805) 844 6018 | Windows, patio, painters | Fillmore · Ventura County | — | — |
| Tile & Marble By Efrain INC | Efrain Fuentes| Fuentes Efrain Ornelas | — | (805) 208 5002 | Other | Oxnard · Ventura County | — | — |
| Tile 805 | Tile 805 | — | (805) 217 6695 | Other | Simi Valley · Ventura County | — | — |
| Tile Concept INC | Hugo Noe Estrada Flores | — | (805) 907 5075 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Tile Specialties | Tile Specialties | info@tilespecialties.com | (805) 701 3599 | Other | Ventura · Ventura County | — | — |
| Tile Tech | Tile Tech | — | (805) 857 5195 | Other | Simi Valley · Ventura County | — | — |
| Tim Boone | Tim Boone | — | (661) 312 1934 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Tim Jenkins Construction INC | Timothy Ray Jenkins | — | (805) 432 5725 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Tim Mayeda Maintenance | Tim Mayeda Maintenance | — | (805) 218 7498 | Electricians | Ventura · Ventura County | — | — |
| Tim Mccabe Construction | Timothy John Mc Cabe | — | (805) 428 1542 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Tim Schneider Construction INC | Timothy Michael| Schneider Tim Michael Schneider | — | (805) 432 9905 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Tim Theveny General Contractor | Tim Theveny General Contractor | — | (805) 889 0342 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Tim's Mobile Lock | Tim's Mobile Lock | tml93001@gmail.com | (805) 794 9029 | Other | Ventura · Ventura County | — | — |
| Timberform Construction | Clive Dennis Alan Brutton | — | (805) 390 5921 | GC, remodel, ADU | Ojai · Ventura County | — | — |
| Timberline Woodworks | Timberline Woodworks | — | (805) 750 8787 | Other | Thousand Oaks · Ventura County | — | — |
| Timeless Floor Company | Felipe De Jesus Bermudez | — | (805) 644 3346 | GC, remodel, ADU | Ventura · Ventura County | — | — |