| Tb Landscaping | Tham Phan | — | (901) 264 6747 | Windows, patio, painters | American Canyon · Napa County | — | — |
| Tbc Plaster Artisans INC | Lisa Renae Howard | — | (707) 252 7781 | GC, remodel, ADU | Napa · Napa County | — | — |
| Team Built Construction INC | Frank Xavier Saldivar | — | (707) 974 5120 | GC, remodel, ADU | St Helena · Napa County | — | — |
| Tellez Painting | Tellez Painting | — | (707) 337 5177 | Windows, patio, painters | Napa · Napa County | — | — |
| Teresi Construction Corporation | Anthony James Teresi | — | (707) 685 3967 | Other roofers | Napa · Napa County | — | — |
| Terry Klein Plastering INC | Kelly Robin Klein Muters | — | (707) 206 8831 | Other | St Helena · Napa County | — | — |
| The Cave Construction Company | Vincent Henri Michel Georges | — | (707) 738 5708 | Other | St Helena · Napa County | — | — |
| The Construction Company | Matthew Sean Hanes | — | (707) 337 8839 | GC, remodel, ADU | Napa · Napa County | — | — |
| The Door Shop | The Door Shop | — | (707) 637-4564 | Windows, patio, painters | Napa · Napa County | — | — |
| The Oak Knoll Group | Michael Joseph Jennaro | oakknollgroup@gmail.com | (209) 601 0734 | GC, remodel, ADU | Napa · Napa County | — | — |
| The Sonoma County Gate Company | Christopher J Anderegg | — | (707) 530 9692 | Other | Pope Valley · Napa County | — | — |
| Thomas Construction | Valerie Gay Peebles | — | (707) 963 9111 | GC, remodel, ADU | St Helena · Napa County | — | — |
| Thomas Jay Ault | Thomas Jay Ault | — | (707) 363 2151 | GC, remodel, ADU | Napa · Napa County | — | — |
| Thompson Tile Company | Edmund Paul Thompson | — | (707) 225 7367 | Other | Napa · Napa County | — | — |
| Tile By Ric LLC | Aguilar Sepulveda Ricardo | — | (707) 681 4664 | Other | American Canyon · Napa County | — | — |
| Tim Tarner Electric | Timothy David| Tarner Tim David Tarner | — | (707) 227 9111 | Electricians | Napa · Napa County | — | — |
| Tim Thill Plastering | Tim Thill Plastering | — | (707) 501 8584 | Other | Napa · Napa County | — | — |
| Tim Welsh Construction | Timothy George Welsh | — | (707) 224 2180 | GC, remodel, ADU | Napa · Napa County | — | — |
| Timber - Rock Craftsmen | Timber - Rock Craftsmen | — | (415) 748 0708 | GC, remodel, ADU | Napa · Napa County | — | — |
| Tiptop | Tiptop | — | (818) 214-8221 | Restoration | Reseda · Napa County | — | — |
| Titan Builders Corporation | Jason Patrick Yeakey | — | (707) 486 8663 | GC, remodel, ADU | Napa · Napa County | — | — |
| Tm Dugdale DBA Don's Garage Door Company | Timothy John Dugdale | — | (707) 763 0265 | Other | American Canyon · Napa County | — | — |
| Todd Alden Duncan | Todd Alden Duncan | — | (707) 363 3465 | GC, remodel, ADU | Napa · Napa County | — | — |
| Todd Hardy Construction INC | Kenneth Todd Hardy | — | (707) 738 7900 | GC, remodel, ADU | Yountville · Napa County | — | — |
| Toma Electronics | Toma Electronics | — | (707) 252 0854 | Electricians | Napa · Napa County | — | — |
| Tony's Supreme Flooring | Tony's Supreme Flooring | — | (707) 495 5525 | GC, remodel, ADU | American Canyon · Napa County | — | — |
| Top Gun Electric | David Julian Mathews Holt | — | (707) 758 0095 | Electricians | Napa · Napa County | — | — |
| Top Performance Landscaping INC | Wilman Alejandro Hernandez | — | (707) 501 7984 | Windows, patio, painters | Napa · Napa County | — | — |
| Torneby Construction | Galen John Torneby | — | (415) 624 7612 | GC, remodel, ADU | Calistoga · Napa County | — | — |
| Toscano Hardwood Floors INC | Jose Oscar Toscano Arceo | — | (707) 337 3900 | Other | Napa · Napa County | — | — |
| Tpm Construction INC | Theodore Wayne Hewitt | — | (707) 224 0167 | GC, remodel, ADU | Napa · Napa County | — | — |
| Trainor Builders | Linda Birgitta Trainor | — | (707) 963 9020 | GC, remodel, ADU | St Helena · Napa County | — | — |
| Trandworld | Guy William Chartrand | guy@trandworld.com | (561) 644 8250 | GC, remodel, ADU | Napa · Napa County | — | — |
| Travis Construction | Travis Jason Macdonald | — | (707) 738 3742 | GC, remodel, ADU | Angwin · Napa County | — | — |
| Trey Napa Valley Custom Builders INC | Richard Leo Iii Sheehe | — | (707) 637 6704 | GC, remodel, ADU | Calistoga · Napa County | — | — |
| Tri - Star Landscaping | Tri - Star Landscaping | — | (707) 342 1830 | Windows, patio, painters | American Canyon · Napa County | — | — |
| Troy Heathcote Grading & Landscaping | Troy Ross Heathcote | — | (707) 732 6596 | Windows, patio, painters | Napa · Napa County | — | — |
| True & Square Construction INC | Julio Cesar Cuevas | — | (510) 806 5635 | GC, remodel, ADU | American Canyon · Napa County | — | — |
| True Line Construction | Victor Hugo Garcia Aburto | — | (415) 680 5692 | GC, remodel, ADU | American Canyon · Napa County | — | — |
| Trumble Construction INC | Robert Ryan Trumble | — | (707) 738 5096 | GC, remodel, ADU | Napa · Napa County | — | — |