| Tapia Moises Plumbing Services | Tapia Moises | — | (510) 712 6873 | Other | Alameda · Alameda County | — | — |
| Tappan Builders | Tappan Builders | — | (510) 848 9042 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Tar Paper Crane Construction | Shiloe Kay Bear | — | (415) 914 5475 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Tarc Construction INC | Alfonse Alberto Arreola | — | (408) 224 2154 | Other | Fremont · Alameda County | — | — |
| Tari Electric INC | Balderrabano Moices Tapia | mtapia@tarielectric.com | (510) 209 1615 | Electricians | Hayward · Alameda County | — | — |
| Tarin Electric & Lighting | Shakib Tarin | — | (510) 362 8365 | Electricians | Hayward · Alameda County | — | — |
| Tarvco Plumbing | Tarvco Plumbing | — | (408) 830 4869 | Other | San Leandro · Alameda County | — | — |
| Tat Horizon Corporation | Chao-Hsing Tan | — | (925) 640 6085 | GC, remodel, ADU | Dublin · Alameda County | — | — |
| Taylor Construction | Nelson Taylor Massengale | — | (510) 910 7934 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Taz Plumbing | Taz Plumbing | — | (510) 875 5946 | Other | San Leandro · Alameda County | — | — |
| Tcg Electrical Contractor INC | Kevin Joseph Anderson | — | (510) 753 0733 | Electricians | Oakland · Alameda County | — | — |
| Tci Construction INC | Russell Elliott Benj Olsen | — | (415) 509 6692 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Tcr Construction | Timothy Clark Ridolfi | — | (510) 295 7510 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Td Arce Construction | Hay Van Dang | — | (510) 838 6899 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Td Mechanical | Td Mechanical | — | (925) 337 5209 | HVAC | Livermore · Alameda County | — | — |
| Td West Electric INC | Dinh Nguyen | info@tdwestelectric.com | (510) 648 6992 | Electricians | Union City · Alameda County | — | — |
| Tdarce Construction INC | Hay Van Dang | — | (510) 838 6899 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Tdr Concrete INC | Olegario Delreal | — | (925) 278 9002 | Other | Livermore · Alameda County | — | — |
| Tdt Landscaping | Tdt Landscaping | — | (510) 648 0720 | Windows, patio, painters | Hayward · Alameda County | — | — |
| Team Bodhi INC | Tru Co Chung | — | (510) 318 1932 | Electricians | Alameda · Alameda County | — | — |
| Team Glass INC | Lawrence David Lavezzo | — | (925) 249 0222 | Windows, patio, painters | Pleasanton · Alameda County | — | — |
| Team Max Construction | Yudi Chen | — | (510) 988 8228 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Team One Solutions INC | Brandon Jason Svec | — | (510) 357 5555 | Other | San Leandro · Alameda County | — | — |
| Team Usa Roofing & Exteriors | Team Usa Roofing & Exteriors | — | (424) 955-2333 | Other roofers | Hermosa Beach · Alameda County | — | — |
| Teams General Roofing INC | Esther Jeong Pak | contact@teamsgeneralroofing.com | (510) 494 0809 | Other roofers | Fremont · Alameda County | — | — |
| Teca Construction | Juan Arturo Vazquez | — | (510) 561 5643 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Teca Electric INC | Josue Salvador Alcantar | — | (619) 928 7092 | Electricians | San Leandro · Alameda County | — | — |
| Tech Line Construction INC | Juan Jose Bandera | — | (510) 798 5869 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Techovation | Ara Stephan Dirtadian | info@techovation.com | (415) 894 0515 | Other | Oakland · Alameda County | — | — |
| Tekify LLC | Brett M Woollum | — | (510) 266 5800 | Other | Hayward · Alameda County | — | — |
| Teladata | Brian Oliver Donathan | — | (510) 979 1200 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Telemax Communications INC | Gerald Aspelin Schulz | — | (925) 828 3150 | Other | Dublin · Alameda County | — | — |
| Temple Home Development LLC | Walter Waitak Chan | — | (510) 846 3460 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Ten Nine Construction | Yonggang Cui | frank@tennineconstruction.com | (669) 226 7469 | Electricians | Castro Valley · Alameda County | — | — |
| Tenant Improvement Construction & Consulting INC | Martin James Bettis | — | (925) 525 2255 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Tennant Interiors | Tennant Interiors | — | (650) 208 7694 | GC, remodel, ADU | Newark · Alameda County | — | — |
| Tennyson Electric LLC | Michael Albert Tennyson | mcoatney@tennysonelec.com | (925) 606 1038 | Electricians | Livermore · Alameda County | — | — |
| Tenoch Countertops/tile | Tenoch Countertops/tile | — | (510) 610 7973 | Other | Hayward · Alameda County | — | — |
| Teo - Cal Construction INC | Marco Antonio Razon Cervantes | — | (510) 384 6394 | Electricians | Oakland · Alameda County | — | — |
| Terence Hung Construction Company | Hung Terence | — | (510) 384 6953 | GC, remodel, ADU | San Leandro · Alameda County | — | — |