| The Perfect View Landscape | Ernesto Cuevas | — | (209) 894 9280 | Windows, patio, painters | Gustine · Merced County | — | — |
| The Phone Connection INC | John Valdez | — | (209) 383 4546 | Other | Merced · Merced County | — | — |
| The Russ Corp | Russell Burt Marks | — | (209) 812 4657 | GC, remodel, ADU | Merced · Merced County | — | — |
| Thomas C Williams Incorporated | Noah Thomas Williams | — | (209) 383 5731 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Thomas J's Welding Service | Thomas John Pugliese-decoste | — | (209) 495 9945 | Other | Los Banos · Merced County | — | — |
| Thomas O'keefe | Thomas O'keefe | — | (209) 675 0767 | GC, remodel, ADU | Los Banos · Merced County | — | — |
| Thomas William Jaroszek Sr DBA T M R | T M R | — | (209) 564 1359 | GC, remodel, ADU | Merced · Merced County | — | — |
| Thunderbird Painting | Adam Phillip Reed | — | (209) 628 0729 | Windows, patio, painters | Atwater · Merced County | — | — |
| Tileworx INC | Neil Craig Ackenheil | rafaelmoio@yahoo.com | (209) 669 4819 | GC, remodel, ADU | Hilmar · Merced County | — | — |
| Tim Conas Construction | Richard Timothy Conas | — | (209) 761 4050 | GC, remodel, ADU | Merced · Merced County | — | — |
| Tinetti Realty Group | Tinetti Realty Group | — | (209) 384-3885 | Property managers | Merced · Merced County | — | — |
| Tint Dynamics | Tint Dynamics | — | (209) 205-0771 | Windows, patio, painters | Merced · Merced County | — | — |
| Tint Masters Window Tinting | Tint Masters Window Tinting | — | (209) 386-0900 | Windows, patio, painters | Merced · Merced County | — | — |
| Titan Construction | Amarjit Singh Gill | stephen@titanconstruction.com | (504) 455-5411 | GC, remodel, ADU | Los Banos · Merced County | — | — |
| Titan Painting | Titan Painting | dave.s@titanpainting.com | (209) 622 6096 | Windows, patio, painters | Delhi · Merced County | — | — |
| Top G Civil INC | Abraham A Vargas Padilla | — | (209) 737 6171 | GC, remodel, ADU | Los Banos · Merced County | — | — |
| Top Notch Construction | Carlos Raymundo Buenrostro | — | (209) 765 6837 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Top Notch Construction | Valenzuela Armando | — | (209) 631 1675 | GC, remodel, ADU | Merced · Merced County | — | — |
| Top Notch Plumbing | Top Notch Plumbing | — | (209) 631 6396 | Other | Merced · Merced County | — | — |
| Torres Electrical | Torres Avina Jose Juan | — | (209) 752 2771 | Electricians | Los Banos · Merced County | — | — |
| Torres Enterprises | Ignacio Torres Vazquez | — | (209) 600 5862 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Toscano's Construction | Jacob Allen Toscano | — | (209) 996 7529 | GC, remodel, ADU | Los Banos · Merced County | — | — |
| Tractor Supply Co. | Tractor Supply Co. | — | (209) 354-4467 | Pest, tile roofs | Merced · Merced County | — | — |
| Tree Barber | Tree Barber | — | (559) 363-3315 | Tree | Merced · Merced County | — | — |
| Tree Service Experts Merced | Tree Service Experts Merced | — | (209) 497-8787 | Tree | Merced · Merced County | — | — |
| Tri - County Flooring America | Michael Brian Toste | — | (209) 357 8142 | Other | Atwater · Merced County | — | — |
| Tri - Phase Electric INC | Larry Gene Mitchell | info@tri-phase-electric.com | (209) 383 7910 | Electricians | Merced · Merced County | — | — |
| Trinity Directional Drilling | Michael Camboia Morin | — | (209) 252 1374 | Other | Merced · Merced County | — | — |
| Triple C INC | Clay Darryl Berlier | — | (209) 357 2591 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Tropical Pool And Spa Solutions | Tropical Pool And Spa Solutions | — | (209) 648 4328 | Pool | Delhi · Merced County | — | — |
| True Guardian Tree Services | True Guardian Tree Services | — | (209) 600-6624 | Tree | Merced · Merced County | — | — |
| Twf Seamless Rain Gutters LLC | Bryan Hernandez | — | (209) 325 5783 | Other | Los Banos · Merced County | — | — |
| Underdog Construction | Jose Enrique Lopez | — | (209) 675 4640 | GC, remodel, ADU | Los Banos · Merced County | — | — |
| Unique Painting | Unique Painting | — | (209) 735 8900 | Windows, patio, painters | Livingston · Merced County | — | — |
| United Fire Sprinklers INC | Alba Fernando Flores | — | (209) 752 5607 | Other | Los Banos · Merced County | — | — |
| United Insulation Solutions INC | Juan Carlos Garcia | — | (209) 631 1987 | GC, remodel, ADU | Merced · Merced County | — | — |
| United Mechanical Construction INC | Gomez Lidia Ramirez | — | (209) 829 8364 | HVAC | Los Banos · Merced County | — | — |
| United Pro Drywall INC | Ricardo Medina Hernandez | — | (209) 658 7193 | Other | Atwater · Merced County | — | — |
| Universal Air HVAC INC | Veloz Gerardo | universalair2018@gmail.com | (209) 445 4844 | HVAC | Atwater · Merced County | — | — |
| Unruh Bobcat Service | Dale James Unruh | unruhbobcatservice@gmail.com | (209) 261-7031 | Other | Merced · Merced County | — | — |