| The Floor Store INC | Kelly Rodillas Flick | — | (510) 559 1235 | Other | Richmond · Contra Costa County | — | — |
| The Flooring Specialist | The Flooring Specialist | — | (925) 586 6503 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| The Flower Garden Company LLC | John Robert Brenkle | — | (925) 648 8206 | Windows, patio, painters | Danville · Contra Costa County | — | — |
| The Frame Construction | Milton Enrique Avila | — | (415) 424 9168 | GC, remodel, ADU | San Pablo · Contra Costa County | — | — |
| The Freezer Guy LLC | David Brian Morrow | — | (925) 699 8592 | HVAC | San Ramon · Contra Costa County | — | — |
| The Fuller Company | Fred Allen Fuller | customer@fuller.com | (925) 288 1350 | GC, remodel, ADU | Pittsburg · Contra Costa County | — | — |
| The Gerontides Company | Chrys Lampos Gerontides | — | (925) 890 7076 | GC, remodel, ADU | Danville · Contra Costa County | — | — |
| The Ghost Painter | The Ghost Painter | — | (510) 260 5832 | Windows, patio, painters | San Pablo · Contra Costa County | — | — |
| The Golden Palm Company INC | Banuelos Ulisses | — | (925) 777 0396 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| The Gramercy Group Design And Build INC | Darryl Michael Seif | — | (310) 869 7376 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| The Handyjew LLC | Joshua Adam Rubenstein | — | (510) 689 9210 | GC, remodel, ADU | Richmond · Contra Costa County | — | — |
| The Helsing Group INC | Kanellis | — | (925) 355 2100 | GC, remodel, ADU | San Ramon · Contra Costa County | — | — |
| The Home Guys Construction | Johannes Petersen Hoyer | — | (925) 872 5192 | GC, remodel, ADU | Walnut Creek · Contra Costa County | — | — |
| The House Whisperer LLC | The House Whisperer LLC | — | (800) 662-8589 | Inspectors | Livermore · Contra Costa County | — | — |
| The Karl Frank Company | Karl Frederick Frank | — | (925) 831 9663 | GC, remodel, ADU | Alamo · Contra Costa County | — | — |
| The Key Factory | The Key Factory | — | (408) 263 3775 | Other | Oakley · Contra Costa County | — | — |
| The Landscape Company | Frank Jay Jr Mc Guire | — | (925) 228 6800 | Windows, patio, painters | Martinez · Contra Costa County | — | — |
| The Lenco Company INC | Michael Robert Butticci | — | (925) 890 6169 | Other | Clayton · Contra Costa County | — | — |
| The Luxury Flooring Company | Jimenez Javier | — | (510) 426 4907 | Other | Richmond · Contra Costa County | — | — |
| The Master's Builder | The Master's Builder | — | (925) 372 4036 | GC, remodel, ADU | Martinez · Contra Costa County | — | — |
| The Needle In The Haystack Remodeling | Christopher Alexander Isaeff | — | (530) 416 1044 | GC, remodel, ADU | Oakley · Contra Costa County | — | — |
| The New Look Grout Specialist | The New Look Grout Specialist | — | (408) 661 4552 | Other | San Ramon · Contra Costa County | — | — |
| The Ortiz Group LLC | Richard Ortiz | maog@ortizgroup.com | (703) 338 6893 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| The Overall Handyman INC | Morales Cesar Serafin | — | (408) 509 2501 | GC, remodel, ADU | Oakley · Contra Costa County | — | — |
| The Patio Cover Company LLC | Tiffany Lynn Trejo | — | (510) 396 0933 | Other | Brentwood · Contra Costa County | — | — |
| The Paving Company General Engineering | Maximiliano Wilfredo Garibay | — | (925) 497 3974 | Other | Pittsburg · Contra Costa County | — | — |
| The Plumbing-two | Lionel Eduardo Moran | — | (510) 992 9474 | Other | San Pablo · Contra Costa County | — | — |
| The Pool Company | Steven Scott Swanson | — | (925) 672 7445 | Pool | Clayton · Contra Costa County | — | — |
| The Pool Cover Guy LLC | Pervis Leon Abbott | — | (925) 826 6584 | Pool | Oakley · Contra Costa County | — | — |
| The Pool Doctor | The Pool Doctor | — | (510) 223 7537 | Pool | El Sobrante · Contra Costa County | — | — |
| The Porch Holistic Garden Center LLC | Diana Lynn Jones | — | (510) 940 5996 | Windows, patio, painters | Lafayette · Contra Costa County | — | — |
| The Reite Company | Theodore Carl Ii Reite | — | (925) 787 3724 | GC, remodel, ADU | Pleasant Hill · Contra Costa County | — | — |
| The Renovation Studio | The Renovation Studio | — | (925) 383 5079 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| The Restoration Cleanup Co INC | Dean Jack Miller | — | (925) 473 2270 | GC, remodel, ADU | Pittsburg · Contra Costa County | — | — |
| The Richards Construction Co INC | Dustin Richard Hoke | — | (925) 382 9528 | Electricians | Antioch · Contra Costa County | — | — |
| The Scholten Company | Richard Fred Scholten | firstname@scholten.com | (408) 476 3878 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| The Scholten Company 2000 INC | Richard Fred Scholten | firstname@scholten.com | (408) 476 3878 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| The Susini Corporation DBA S & N Carpet & Linoleum | Patricia Christine Susini | — | (925) 228 3070 | Other | Martinez · Contra Costa County | — | — |
| The Tree Solution Corporation | Gonzalez Ragoitia Odilon | info-apac@treesolution.com | (510) 672 2995 | Tree | El Sobrante · Contra Costa County | — | — |
| The Trim Guys | James Thomas Buchanan | — | (925) 289 8069 | GC, remodel, ADU | Pleasant Hill · Contra Costa County | — | — |