| Teresa Donovan Landscaping | Teresa Donovan Landscaping | — | (510) 336 0427 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Termike Pest Control | Termike Pest Control | info@termikepestcontrol.com | (888) 683-3592 | Pest, tile roofs | Burbank · Alameda County | — | — |
| Terra Firma Geotechnical | Terra Firma Geotechnical | — | (510) 301 2582 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Terra Firma Structural | Terra Firma Structural | — | (415) 672 5094 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Terra Landscape | Craig William Lundin | contact@terralandscape.com | (510) 562 4000 | Windows, patio, painters | San Leandro · Alameda County | — | — |
| Terra North Design & Build LLC | Muhuan Lyu | — | (949) 579 0618 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Terra Visual INC | Aaron Everett Benz | — | (510) 747 8077 | Other | Alameda · Alameda County | — | — |
| Terra Volt Electric | Jose Albertano Erroa Ayala | — | (510) 967 1274 | Electricians | San Leandro · Alameda County | — | — |
| Terra-con INC | Jeffrey Richard Mendonca | corporate@terracon.com | (925) 409 0153 | Pool | Livermore · Alameda County | — | — |
| Terra-sol Design Builders | Terra-sol Design Builders | — | (510) 246 9145 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Terrance H Wolf | Terrance H Wolf | — | (510) 773 5249 | Other | Fremont · Alameda County | — | — |
| Terrance H Wolf Jr | Terrance H Wolf Jr | — | (510) 657 3473 | Other | Fremont · Alameda County | — | — |
| Terraphase Engineering INC | Jeffery Riggan Raines | — | (510) 645 1850 | Other | Oakland · Alameda County | — | — |
| Terry C Morris Enterprises INC Dba: Eagle Electric | Lawrence William Iii Brumm | — | (925) 426 9441 | Electricians | Pleasanton · Alameda County | — | — |
| Terry G Pickett Custom Building | Terry G Pickett Custom Building | — | (510) 517 9601 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Terry's Plumbing INC | Terry Brian Yee | — | (925) 548 8725 | Other | Livermore · Alameda County | — | — |
| Terry's Tree Service INC | Diane Powell | — | (925) 449 2087 | Tree | Livermore · Alameda County | — | — |
| Tesla Construction INC | Timothy Patrick Phaneuf | — | (844) 837 5201 | HVAC | Fremont · Alameda County | — | — |
| Tesla Energy Operations INC | Gilberto Menezes Klobukoski | — | (844) 837 5201 | Other roofers | Fremont · Alameda County | — | — |
| Tesla Landscaping | Chen Taihe | ad@teslalandscaping.com | (510) 557 2996 | Windows, patio, painters | Castro Valley · Alameda County | — | — |
| Tesseract Sanitation Services | Glen K Wylie | — | (415) 225 7335 | Other | Emeryville · Alameda County | — | — |
| Textura INC | Garcia Ramon | — | (510) 219 9187 | Other | Berkeley · Alameda County | — | — |
| Tez Marble Installation | Meryem Tezdogan | — | (510) 346 9400 | Other | Oakland · Alameda County | — | — |
| Thames Construction | Ryan Steele Thames | — | (925) 999 5618 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Thao Van Le | Thao Van Le | — | (510) 292 1244 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| The Alpha & The Omega | The Alpha & The Omega | — | (510) 875 9206 | Other | Oakland · Alameda County | — | — |
| The Arboreal Company | Jonathan Joseph Ii Maystrik | — | (855) 272 6732 | Other | Hayward · Alameda County | — | — |
| The Carpet Center INC | Nicholas Vincent Budetti | interested@domainmarket.com | (408) 871 0792 | Other | Fremont · Alameda County | — | — |
| The Craig Brown Company INC | John Mark Farmer | — | (510) 886 5260 | Other | Hayward · Alameda County | — | — |
| The Door Doctor | Thomas Michael Minahan | — | (925) 484 4290 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| The Door Guy Services | Robert Louis Snowden | — | (510) 200 6073 | Other | Oakland · Alameda County | — | — |
| The Drain Surgeon Plumbing | The Drain Surgeon Plumbing | — | (510) 684 0808 | Other | Berkeley · Alameda County | — | — |
| The Driveway Co | Zalan Mihaly Lorincz | support@driveway.com | (925) 588 6955 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| The East Bay Craftsman | The East Bay Craftsman | — | (510) 205-7080 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| The Ecovery Project | The Ecovery Project | — | (510) 407 3342 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| The Electric Exchange | Ronald James Grajeda | — | (510) 561 4194 | Electricians | Oakland · Alameda County | — | — |
| The Electrical Testing Company LLC | Janette Diaz Tabora | — | (510) 876 8156 | Electricians | Hayward · Alameda County | — | — |
| The Faux Pro Painting & Decorating | James Alexander Jasaitis | — | (510) 547 5994 | Windows, patio, painters | Piedmont · Alameda County | — | — |
| The Fence Company | Cody Daniel Long | — | (925) 837 7800 | Other | Hayward · Alameda County | — | — |
| The Floor Show INC | Michael Bradley Dunn | — | (510) 845 4633 | Other | Berkeley · Alameda County | — | — |