| Thrasher Pest Control | Thrasher Pest Control | — | (619) 625-6249 | Pest, tile roofs | Escondido · Calaveras County | — | — |
| Three Pines Tree Service LLC | Edwin Alejandro Jr Pena | — | (209) 335 6655 | Other | San Andreas · Calaveras County | — | — |
| Timothy Jones | Timothy Jones | — | (209) 770 2261 | Other | Arnold · Calaveras County | — | — |
| Timothy M Fries | Timothy M Fries | — | (415) 756 1363 | GC, remodel, ADU | Mountain Ranch · Calaveras County | — | — |
| Tip Top Tree Service | Gatlin Dewan Hampton | — | (209) 454 6525 | Other | Murphys · Calaveras County | — | — |
| Tj-mec Construction Services INC | Thomas Evan Jones | — | (650) 714 2464 | GC, remodel, ADU | Copperopolis · Calaveras County | — | — |
| Todd And Sons Electric | Breanne Nicole Todd | — | (209) 660 0897 | Electricians | Glencoe · Calaveras County | — | — |
| Todd Dayton | Todd Dayton | — | (510) 610 5203 | Other | Copperopolis · Calaveras County | — | — |
| Todd Monges Painting | Todd Monges Painting | — | (209) 584 4389 | Windows, patio, painters | Arnold · Calaveras County | — | — |
| Todeschini Construction INC | Robert Ross Todeschini | — | (209) 770 1014 | GC, remodel, ADU | Murphys · Calaveras County | — | — |
| Tom Kemp DBA Hard Rock Landscaping | Hard Rock Landscaping | — | (707) 763 7148 | Windows, patio, painters | Arnold · Calaveras County | — | — |
| Top - Notch Construction | Scott Michael Shaw | — | (831) 419 0457 | GC, remodel, ADU | Arnold · Calaveras County | — | — |
| Top Less Tree Care INC | Dawn Marie Zrimsek | — | (209) 604 3137 | Tree | Murphys · Calaveras County | — | — |
| Top Quality Insulation & Fireplaces INC | Robert Kirk De Marco | — | (209) 772 2501 | Other | Valley Springs · Calaveras County | — | — |
| Tractor Works INC | Quentin Lester Failing | — | (209) 772 3949 | Other | Valley Springs · Calaveras County | — | — |
| Tree Frog Timber Co | Byron Call Essert | — | (510) 630 9062 | Other | Altaville · Calaveras County | — | — |
| Trinity Home Alliance | Trinity Home Alliance | — | (916) 752 2143 | GC, remodel, ADU | Mokelumne Hill · Calaveras County | — | — |
| True Ceilings | True Ceilings | — | (925) 640 0473 | Other | Mountain Ranch · Calaveras County | — | — |
| True Value Garage Door Services | Jeffrey Page Sr Evans | — | (209) 275 2278 | Other | Copperopolis · Calaveras County | — | — |
| Trumpowers Home Services LLC | Mathew Scott Trumpower | — | (209) 736 7365 | GC, remodel, ADU | Altaville · Calaveras County | — | — |
| Turner Construction | Danny Howard Turner | — | (209) 480 1659 | Electricians | Angels Camp · Calaveras County | — | — |
| Unique Innovation Construction INC | Luis Angel Castro Gonzalez | — | (209) 470 0733 | GC, remodel, ADU | Valley Springs · Calaveras County | — | — |
| Uniquity Builders INC | William Edward Iii Reed | bill3@uniquitybuilders.com | (209) 772 9200 | Electricians | Valley Springs · Calaveras County | — | — |
| Valley Roots Renovations | Valley Roots Renovations | — | (209) 592 5075 | GC, remodel, ADU | Copperopolis · Calaveras County | — | — |
| Vandehey Painting And Construction | William Jerald Vandehey | — | (951) 288 3581 | GC, remodel, ADU | Mokelumne Hill · Calaveras County | — | — |
| Venom Plumbing INC | Arturo Rodriguez | — | (510) 750 4622 | Other | Valley Springs · Calaveras County | — | — |
| Vester Pest Control | Vester Pest Control | info@vesterpest.com | (858) 793-3471 | Pest, tile roofs | Rancho Santa Fe · Calaveras County | — | — |
| Vetcomm Construction | Robert Joseph Thomas | — | (858) 900 4146 | GC, remodel, ADU | Valley Springs · Calaveras County | — | — |
| Vetta Construction INC | Robert John Brattesani | info@vettaconstruction.com | (209) 984 6731 | GC, remodel, ADU | Copperopolis · Calaveras County | — | — |
| Vigil Roofing INC | Vigil Roofing INC | info@vigilroofing.com | (619) 960-3533 | Other roofers | Escondido · Calaveras County | — | — |
| Villa Property Inspections LLC | Villa Property Inspections LLC | impallari@gmail.com | (888) 390-9948 | Inspectors | Claremont · Calaveras County | — | — |
| Vince Reece Construction Co | Norman Vincent Reece | — | (209) 795 3297 | GC, remodel, ADU | Arnold · Calaveras County | — | — |
| Wagner & Sons Construction INC | Shane Paul Wagner | — | (209) 625 5567 | GC, remodel, ADU | Valley Springs · Calaveras County | — | — |
| Washington Flats Home And Land Services | Sage Owen Scott | — | (626) 506 8341 | GC, remodel, ADU | Angels Camp · Calaveras County | — | — |
| Waterman Construction INC | Tyler John Waterman | — | (831) 588 9343 | GC, remodel, ADU | Murphys · Calaveras County | — | — |
| Way Up Painting | Way Up Painting | — | (209) 630 1542 | Windows, patio, painters | Arnold · Calaveras County | — | — |
| Weslei Costa General Contractor | Weslei Costa General Contractor | — | (209) 749 5144 | GC, remodel, ADU | Copperopolis · Calaveras County | — | — |
| West Coast Air Conditioning | Daniel Keith Parker | — | (209) 598 8889 | HVAC | Valley Springs · Calaveras County | — | — |
| West Construction | Gary Lee West | — | (209) 479 9378 | GC, remodel, ADU | Burson · Calaveras County | — | — |
| Westbay Roofing | Walter Finley Higgins | eben@eyebytes.com | (650) 921 0080 | Other roofers | Mokelumne Hill · Calaveras County | — | — |