| Tg Electric | Tyler Wayne Guillory | — | (707) 685 2728 | Electricians | Petaluma · Sonoma County | — | — |
| Tgs Plumbing | Tgs Plumbing | — | (707) 710 0810 | Other | Santa Rosa · Sonoma County | — | — |
| The Bathtub Medic | The Bathtub Medic | — | (707) 228 5348 | Other | Santa Rosa · Sonoma County | — | — |
| The Beautiful Home Company | Jeffrey Bachman Mennies | — | (925) 200 7770 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| The Belli Corporation | Joseph Nicholas Belli | — | (707) 431 9342 | HVAC | Healdsburg · Sonoma County | — | — |
| The Bill Tallman Construction Co General Contractor | William Joseph Tallman | — | (707) 338 1784 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| The Blue Cat | The Blue Cat | — | (707) 508 8554 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| The Brothers That Just Do Gutters Coastal North Ca | Oscar Evenor Jr Maldonado | — | (707) 630 0777 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| The Cabinet Outlet | Jeremy Allin Mcnutt | rogerl@cabinetoutlet.com | (707) 546 7462 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| The Californian Construction Group LLC | Juan Carlos Arenas | — | (707) 508 7220 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| The Canopy - New Homes By City Ventures | The Canopy - New Homes By City Ventures | — | (408) 598-6139 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| The Consummate Craftsman Land Care | The Consummate Craftsman Land Care | — | (707) 931 8156 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| The Crawl Space Guys | David Michael Carney | — | (707) 578 1188 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| The Design & Building Works | The Design & Building Works | — | (707) 526 9566 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| The Drywall Doctor INC | Alvarado Jaime Rodriguez | — | (707) 308 5826 | Other | Santa Rosa · Sonoma County | — | — |
| The Drywall Guy INC | Gilbert Lynn Mc Daniel | — | (707) 888 7140 | Other | Santa Rosa · Sonoma County | — | — |
| The Duct Doctor INC | Charles Grant Nelson | theductdoctor.cleanair@gmail.com | (707) 490 2722 | HVAC | Santa Rosa · Sonoma County | — | — |
| The Electrical People | Erik Damien Daunell | — | (707) 484 0826 | Electricians | Petaluma · Sonoma County | — | — |
| The Fencebuilders | The Fencebuilders | interested@domainmarket.com | (709) 369 4900 | Other | Petaluma · Sonoma County | — | — |
| The Gluck Company | Brian Paul Gluck | — | (818) 929 4890 | GC, remodel, ADU | Santa Rosa Valley · Sonoma County | — | — |
| The Great Landscape LLC | Jonathan Josue Dominguez | — | (707) 228 3351 | Windows, patio, painters | Windsor · Sonoma County | — | — |
| The Hole Floor | The Hole Floor | — | (707) 484 1125 | Other | Santa Rosa · Sonoma County | — | — |
| The Koop's | The Koop's | — | (707) 483 4172 | Other | Santa Rosa · Sonoma County | — | — |
| The Legacy Paver Group | Hayley Sarah Johnson | — | (707) 538 1071 | Other | Santa Rosa · Sonoma County | — | — |
| The Paint Doctor | The Paint Doctor | office@paintdoctor.com | (707) 479 2263 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| The Plumbing Guy | The Plumbing Guy | — | (707) 978 8050 | Other | Graton · Sonoma County | — | — |
| The R&d Lab Co DBA Amy's Roofing And Solar | Brian Edward Atchley | — | (707) 981 9801 | Other roofers | Petaluma · Sonoma County | — | — |
| The Rock Construction INC | Mendoza Salas Martin | cclancy@rockconstruction.com | (707) 480 1923 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| The Roofer | The Roofer | — | (707) 584 5449 | Other roofers | Rohnert Park · Sonoma County | — | — |
| The Specialist Pool Service | Lance Ian Petersen | — | (707) 479 0076 | Pool | Windsor · Sonoma County | — | — |
| The Stipa Corporation DBA O'connell Landscape | Michael J O'connell | — | (415) 462 9729 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| The Sungarden Company INC | Sandoval Bruno | — | (916) 825 7046 | Windows, patio, painters | Sonoma · Sonoma County | — | — |
| The Tin Man INC | Brian William Curtin | — | (415) 320 5507 | Other | Petaluma · Sonoma County | — | — |
| The Tuxhorn Company | Melvin Le Roy Jr Tuxhorn | info@tuxhorn.com | (707) 322 2878 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| The Ward And Sons Co | Steven William Ward | — | (707) 483 6311 | Other | Santa Rosa · Sonoma County | — | — |
| The Water Folk LLC DBA The Water Folk Landscaping | Ethan Hirsch-Tauber | — | (404) 307 4446 | Windows, patio, painters | Cotati · Sonoma County | — | — |
| The Water's Edge Design/landscape LLC | Chris Ray Hensley | — | (707) 567 7179 | Windows, patio, painters | Occidental · Sonoma County | — | — |
| Theiss Electric INC | Michael David Theiss | — | (707) 318 1493 | Electricians | Santa Rosa · Sonoma County | — | — |
| Thierry Pool Services | Jeffrey Joseph Thierry | — | (707) 888 5487 | Pool | Sebastopol · Sonoma County | — | — |
| Thiessen Homes | Thiessen Homes | orrin@towngreenvillage.com | (707) 295 1616 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |