| Swinyard Construction | Lisa Jean Swinyard | — | (209) 794 0175 | GC, remodel, ADU | Thornton · San Joaquin County | — | — |
| Sy Van Le | Sy Van Le | — | (209) 639 4760 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Synergy Concrete Engineering | Synergy Concrete Engineering | — | (209) 423 6271 | Other | Stockton · San Joaquin County | — | — |
| Systech Electric INC | Jeet Joshneel Singh | — | (209) 298 2801 | Electricians | Stockton · San Joaquin County | — | — |
| T & N Landscaping | Richard Phong Ho | — | (209) 817 1114 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| T & S Garage Doors And Gates | Groszek Tomasz | — | (209) 992 9924 | Other | Stockton · San Joaquin County | — | — |
| T & S West | Kevin Joseph Holtberg | — | (209) 942 1360 | GC, remodel, ADU | Linden · San Joaquin County | — | — |
| T A Krause Construction & Custom Painting | Troy Anthony Krause | — | (209) 339 9165 | Other roofers | Lodi · San Joaquin County | — | — |
| T Drywall INC | Juan Antonio Guardado Frias | support@tdrywall.com | (408) 449 1687 | Other | Manteca · San Joaquin County | — | — |
| T G A Construction | Antonio Rojas Gonzalez | — | (209) 688 0734 | Other | Stockton · San Joaquin County | — | — |
| T G C I | Thomas Rein Groen | — | (209) 872 1244 | GC, remodel, ADU | Ripon · San Joaquin County | — | — |
| T Harrison Electric | Tony Andrew Harrison | — | (209) 830 6464 | Electricians | Tracy · San Joaquin County | — | — |
| T L C Construction | Timothy Leon Copeland | — | (209) 327 4514 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| T M Concrete | T M Concrete | — | (650) 642 1614 | Other | Tracy · San Joaquin County | — | — |
| T N T Construction | Timothy William Wright | — | (209) 241 4006 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| T N T Construction | Diaz Trinidad | — | (209) 456 1160 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| T W S Tile With Style | Toby John Aquino | — | (209) 594 4749 | Other | Stockton · San Joaquin County | — | — |
| T&a Painting Co INC | Miguel Angel Ceja Magana | — | (209) 824 9341 | Windows, patio, painters | Manteca · San Joaquin County | — | — |
| T-6 Construction LLC | Robert C Holloway | info@tconstruction.com | (209) 851 2152 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Tabasco - C L Landscaping | Tabasco - C L Landscaping | — | (209) 482 6438 | Windows, patio, painters | Ripon · San Joaquin County | — | — |
| Tadek Construction INC | Joke Monique Vandenbulcke | tadekwindows@gmail.com | (707) 287 1703 | GC, remodel, ADU | Lathrop · San Joaquin County | — | — |
| Tadek Constructions | Tadek Constructions | — | (707) 287 1703 | GC, remodel, ADU | Lathrop · San Joaquin County | — | — |
| Talus Construction INC | Sharon Lee Alberts | estimating@teamtalus.com | (510) 257 6600 | Other | Lathrop · San Joaquin County | — | — |
| Tamaleko Electric Corporation | Fohepapalangi Latu | — | (209) 452 9607 | Electricians | Stockton · San Joaquin County | — | — |
| Tan Builder | Tan Builder | — | (510) 388 2738 | GC, remodel, ADU | Mountain House · San Joaquin County | — | — |
| Tapia Construction | Tapia Antonio | — | (209) 463 7112 | Other roofers | Stockton · San Joaquin County | — | — |
| Tara Coatings INC | John Patrick Jr Stephens | john@taracoatings.com | (209) 463 5066 | Other roofers | Stockton · San Joaquin County | — | — |
| Tarasco Concrete INC | Alvarez Tariakuri Reyna | — | (209) 362 7588 | Other | Stockton · San Joaquin County | — | — |
| Tascoe Drywall | Tascoe Drywall | — | (209) 988 2001 | Other | Stockton · San Joaquin County | — | — |
| Taylor Kinzie Construction | Taylor Reid Kinzie | — | (209) 484 8480 | GC, remodel, ADU | Ripon · San Joaquin County | — | — |
| Taylor Painting & Decorating INC | Timothy Dane Taylor | — | (925) 484 3454 | Windows, patio, painters | Manteca · San Joaquin County | — | — |
| Tci - Titan Construction INC DBA Titan Constructed | Kenneth Daniel Walker | — | (209) 831 9476 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Tdk Construction Corp | Tyrell Dennis Kneeland | — | (209) 210 7434 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Technoedge Machiniry | Technoedge Machiniry | — | (350) 250 9859 | Electricians | Mountain House · San Joaquin County | — | — |
| Ted Thorp Construction | Theodore Samuel Thorp | — | (209) 712 5009 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Terra - Bilt Construction | Brian Thomas Terra | — | (209) 981 1697 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Tesoro Homes INC | Richard Todd De Ponte | — | (209) 571 7353 | GC, remodel, ADU | Ripon · San Joaquin County | — | — |
| The Brothers That Just Do Gutters-south Bay | Jose Luis Reynoso | — | (408) 583 6040 | Other | Tracy · San Joaquin County | — | — |
| The Carport Experts | Armas Emmanuel Aguilar | — | (209) 676 8168 | Other | Stockton · San Joaquin County | — | — |
| The Climate Company Heating And Air Conditioning | Jose Ramon Cisneros | — | (888) 325 4682 | HVAC | Stockton · San Joaquin County | — | — |