| Tim Pinney Electric | Timothy Ashford Pinney | — | (707) 738 8896 | Electricians | Santa Rosa · Sonoma County | — | — |
| Tim Pritchard Construction | Timothy Dean Pritchard | — | (707) 331 7020 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Tim Scanlon Construction | Tim James Scanlon | — | (707) 494 2604 | GC, remodel, ADU | Vineburg · Sonoma County | — | — |
| Timbercove Excavating INC | William Harold Seymour | — | (707) 396 3287 | Other | Cazadero · Sonoma County | — | — |
| Timberwolf Construction | David Shaun Kesterson | %20timberwolfconstruction@gmail.com | (909) 534-4308 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Timeless Concrete INC | Solano Karlos Azanza | — | (707) 755 1146 | Other | Santa Rosa · Sonoma County | — | — |
| Timmins Painting | Timmins Painting | — | (707) 792 0773 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| Timothy Christian | Timothy Christian | admissions@timothychristian.com | (707) 765 1141 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| Timothy W Riddle Construction | Timothy Wayne Riddle | — | (707) 225 7527 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Tinterman's Tinting | Tinterman's Tinting | — | (419) 388 0370 | Other | Cotati · Sonoma County | — | — |
| Titan Roofing And Construction | Abel Flores Jimenez | — | (707) 402-9700 | Other roofers | Cotati · Sonoma County | — | — |
| Titone Construction | Vincent Lawrence Titone | — | (707) 974 9299 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Tl Construction | Tyler J Lewis | — | (707) 849 7192 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Tlc Custom Home Builders LLC | Efrain Jr Martinez | — | (707) 364 7191 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Tm Construction INC | Ernestino Martinez-Heras | — | (707) 228 6329 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Tml Electric LLC | Tomas Mazeika | — | (707) 570 5183 | Electricians | Santa Rosa · Sonoma County | — | — |
| Tnl Electrical | Jordan Miguel Harrison | — | (510) 927 8578 | Electricians | Sebastopol · Sonoma County | — | — |
| Tnz Remodel | Tnz Remodel | — | (707) 304 4963 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Tobon's Floor Covering | Tobon's Floor Covering | — | (707) 321 8089 | Other | Windsor · Sonoma County | — | — |
| Todd Allen | Todd Allen | — | (707) 494 0830 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Todd Barricklow Studio | Todd Barricklow Studio | — | (707) 694 9287 | Other | Santa Rosa · Sonoma County | — | — |
| Todd Curlee Construction | Todd Gene Curlee | — | (707) 886 5117 | GC, remodel, ADU | Annapolis · Sonoma County | — | — |
| Todd Lands Construction | Todd Randel Lands | — | (707) 280 1366 | GC, remodel, ADU | Cloverdale · Sonoma County | — | — |
| Todd Thorson Tile INC | Todd Rowan Thorson | — | (707) 538 8801 | Other | Santa Rosa · Sonoma County | — | — |
| Toledo Landscaping | Toledo Landscaping | — | (707) 696 0669 | Windows, patio, painters | Healdsburg · Sonoma County | — | — |
| Tom Chechile Gen Contractor | Tom Chechile Gen Contractor | — | (707) 799 5141 | GC, remodel, ADU | Healdsburg · Sonoma County | — | — |
| Tom Gawronski Contractor INC | Thomas Richard Gawronski | — | (415) 847 3375 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Tom Hughes Electric | Thomas Stewart Iv Hughes | — | (707) 490 2106 | Electricians | Forestville · Sonoma County | — | — |
| Tom Luchese Plumbing | Tom Luchese Plumbing | — | (707) 975 1051 | Pool | Penngrove · Sonoma County | — | — |
| Tom Lynch Construction | Thomas Dean Lynch | — | (707) 529 1890 | GC, remodel, ADU | Guerneville · Sonoma County | — | — |
| Tom Richardson Construction | Thomas Byron Richardson | — | (707) 396 6606 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Tom Young Construction | Thomas Keith Young | — | (707) 481 8577 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Tomas Herrera Suastegui | Tomas Herrera Suastegui | — | (707) 338 4678 | Other | Rohnert Park · Sonoma County | — | — |
| Tomko Electric INC | Gregg William Tomko | — | (707) 996 5548 | Electricians | Sonoma · Sonoma County | — | — |
| Tomrose Construction INC | William Reno Tomrose | — | (707) 763 4001 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Tonche Stone & Tile INC | Hector Manuel Cienega Tonche | — | (707) 596 0988 | Other | Santa Rosa · Sonoma County | — | — |
| Tonole Electrical INC | Brian Kent Tonole | — | (707) 292 1711 | Electricians | Windsor · Sonoma County | — | — |
| Tony Capretta Carpentry | Tony Capretta Carpentry | — | (914) 907 8036 | Other | Petaluma · Sonoma County | — | — |
| Tony Doiron's Concrete Pumping Service INC | Anthony Eugene Doiron | — | (707) 575 8164 | Other | Santa Rosa · Sonoma County | — | — |
| Tony's Tile & Stone | Tony's Tile & Stone | — | (707) 217 1144 | Other | Rohnert Park · Sonoma County | — | — |