| Terryl Tidwell | Terryl Tidwell | — | (707) 964 3732 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| The Carpenters Qfc INC | Randell Alan Carpenter | — | (707) 695 3048 | GC, remodel, ADU | Redwood Valley · Mendocino County | — | — |
| The Climate Co Heating And Air | Weston William Terry | — | (707) 479 1742 | HVAC | Ukiah · Mendocino County | — | — |
| The Front Porch | The Front Porch | info@frontporch.com | (541) 915 5269 | GC, remodel, ADU | Redwood Valley · Mendocino County | — | — |
| The Studio Mendocino | The Studio Mendocino | — | (707) 397-0199 | Windows, patio, painters | Mendocino · Mendocino County | — | — |
| Theron E Radtkey | Theron E Radtkey | — | (707) 331 3470 | GC, remodel, ADU | The Sea Ranch · Mendocino County | — | — |
| Thom Pelletier Construction | Thomas James Pelletier | — | (707) 684 9000 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| Thomas Roofing | Enrique Daniel Thomas | — | (707) 485 4812 | Other roofers | Ukiah · Mendocino County | — | — |
| Thomas Wollman Construction And Electric | Thomas A Wollman | — | (707) 357 4436 | Electricians | Mendocino · Mendocino County | — | — |
| Tidwell Construction | Tidwell Laurel | — | (707) 357 6226 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| Tidwell Electric | Jesse Reye Tidwell | — | (707) 513 7547 | Electricians | Fort Bragg · Mendocino County | — | — |
| Tim Jeffery | Tim Jeffery | — | (707) 494 3878 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| Tim Taubold Construction | Timothy Edward Taubold | — | (707) 964 4222 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| Tim Zimmerer Construction | Timothy Donald Zimmerer | — | (707) 489 2934 | GC, remodel, ADU | Redwood Valley · Mendocino County | — | — |
| Titus Land Construction INC | Dean Scott Titus | — | (707) 895 2515 | Other | Boonville · Mendocino County | — | — |
| Toloza Tree Service | Toloza Rios Sebastian | — | (707) 972 4023 | Tree | Willits · Mendocino County | — | — |
| Tom Charters Construction | Thomas William Charters | — | (707) 357 7779 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| Tom Foreman Construction Company | Thomas Michael Foreman | — | (707) 357 8436 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| Tom Wake Plumbing LLC | Tommy Dale Wake | — | (707) 354 0259 | Other | Willits · Mendocino County | — | — |
| Tom's Plumbing INC | Brandon Wade Ward | — | (707) 884 3818 | Other | Gualala · Mendocino County | — | — |
| Tonks Tree Service | Tatanka Roland Russell | — | (707) 964 6209 | Tree | Fort Bragg · Mendocino County | — | — |
| Tony Roach Building | Tony Roach Building | — | (707) 496 3336 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| Tools And Me Construction | Matthew Dennis Hill | — | (707) 357 0136 | GC, remodel, ADU | Albion · Mendocino County | — | — |
| Tory J Lawrence | Tory J Lawrence | — | (707) 489 4131 | Other | Willits · Mendocino County | — | — |
| Totally Wired Homes | Totally Wired Homes | info@totallywiredhomes.com | (707) 664 0664 | Other | Ukiah · Mendocino County | — | — |
| Traditional Homes INC | Burton William Parsons | — | (866) 949 0829 | GC, remodel, ADU | Albion · Mendocino County | — | — |
| Trent Kreck Painting | Trent Kreck Painting | — | (707) 785 3416 | Windows, patio, painters | Gualala · Mendocino County | — | — |
| Trevor Ray Sundstrom | Trevor Ray Sundstrom | — | (707) 291 7227 | GC, remodel, ADU | Gualala · Mendocino County | — | — |
| Tri-valley Pump Service INC | Matthew Duane Frazer | — | (707) 462 3181 | Other | Redwood Valley · Mendocino County | — | — |
| True Timber Builders INC | Eli Mikhail Wolverton | — | (530) 721 2747 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| Tunzi INC | Larry Steven Tunzi | — | (707) 937 0728 | Other | Comptche · Mendocino County | — | — |
| Twin Pines Construction | Theodore Martin Johnson | — | (707) 972 5056 | GC, remodel, ADU | Willits · Mendocino County | — | — |
| Twisted Electric | Nicolas Joe Jr Arreguin | — | (707) 972 5711 | Electricians | Fort Bragg · Mendocino County | — | — |
| Two Bears Remodeling LLC | Shannon Lee Underhill | — | (707) 357 7044 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| Ukiah Oxygen Co | Keith Germain Bulcke | — | (707) 443 2228 | Other | Ukiah · Mendocino County | — | — |
| Ukiah Round Tree Glass INC | Paul Jeffery Williams | — | (707) 462 3552 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| Ultsch General Contractor | Ultsch General Contractor | — | (530) 227 9992 | GC, remodel, ADU | Willits · Mendocino County | — | — |
| Ultsch Heating And Cooling | Ultsch Heating And Cooling | — | (707) 367 7914 | HVAC | Willits · Mendocino County | — | — |
| United Construction | Steven Leslie Gomes | akneisel@unitedconstruction.com | (707) 367 3108 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| United Drilling | United Drilling | — | (707) 964 4718 | Other | Fort Bragg · Mendocino County | — | — |