| Dk Landscaping INC | Kathleen Annette Lee | — | (707) 280 3632 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| Dks Construction | Dennis Keith Sandberg | — | (707) 494 2686 | GC, remodel, ADU | Occidental · Sonoma County | — | — |
| Dm Quality Painting | Dorian Francisco Valenzuela Mendez | dmqualitypainting5@gmail.com | (415) 532 4162 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| Dmg Landscaping INC | Daniel Maldonado Gopar | requests@dmglandscaping.com | (707) 971 9547 | Windows, patio, painters | Cotati · Sonoma County | — | — |
| Dmr Builders | Godemar Inacio Jr Da Silva | — | (707) 596 7575 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Dnl Builders INC | Darrell Dewayne Lancaster | — | (707) 495 2950 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Do Builder | Do Builder | — | (707) 823 3830 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Dobbs Construction | Wesley Gene Dobbs | — | (417) 622 2278 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Doble General Engineering | Doble General Engineering | — | (707) 888 8857 | Other | Santa Rosa · Sonoma County | — | — |
| Doble P Flooring | Brandon Francisco Perez Bravo | — | (707) 779 9825 | Other | Santa Rosa · Sonoma County | — | — |
| Dolcini Construction | Fred C Dolcini | — | (707) 477 1138 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Dolcini Plumbing INC | Jason Earl Dolcini | info@dolciniplumbing.com | (707) 763 6374 | Other | Petaluma · Sonoma County | — | — |
| Domenichelli Masonry | Stephanie Marie Domenichelli Setzer | — | (707) 433 4124 | Other | Healdsburg · Sonoma County | — | — |
| Dominic Elissiry Construction | Elissiry Dominic Consruction | — | (707) 338 5499 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Dominique S Martinelli DBA Dsm Electrical Services | Dominique Sean Martinelli | — | (707) 230 9508 | Electricians | Santa Rosa · Sonoma County | — | — |
| Don Barch | Don Barch | — | (707) 483 4751 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Don Clark General Contractor | Don Clark General Contractor | — | (707) 874 6115 | GC, remodel, ADU | Occidental · Sonoma County | — | — |
| Don Williamson | Don Williamson | — | (707) 326 7728 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Donald Shaw | Donald Shaw | — | (415) 720 0823 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Donald V Sondergaard | Donald V Sondergaard | — | (707) 823 2871 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Donald Volmering | Donald Volmering | — | (707) 321 6549 | Electricians | Rohnert Park · Sonoma County | — | — |
| Done Right HVAC Services LLC | Sanad Saleh Ali Alhomeedi | — | (510) 393 6588 | HVAC | Santa Rosa · Sonoma County | — | — |
| Done Right Painting | Done Right Painting | — | (707) 329 5967 | Windows, patio, painters | Sebastopol · Sonoma County | — | — |
| Donegal Const | Donegal Const | — | (707) 537 1873 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Donham Construction | Jeffrey Richard Donham | — | (707) 578 3217 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Donnelly Plumbing | Donnelly Plumbing | — | (805) 910 8727 | Other | Santa Rosa Valley · Sonoma County | — | — |
| Doolittle Painting Co | Dennis Matthew Doolittle | — | (707) 217 3867 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| Door Beautiful INC | Bradley Alan Chiaravalle | brad@doorbeautiful.com | (707) 539 3196 | Other | Santa Rosa · Sonoma County | — | — |
| Dotto Construction Company | Dominic Roy Dotto-mihelich | info@dottoco.com | (415) 785 8703 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Double C Tree Service | Cristian Rumaldo Cifuentes De Leon | — | (415) 786 5544 | Tree | Petaluma · Sonoma County | — | — |
| Double S Welding & Fabrication INC | Sean Evan Stockton | — | (707) 343 1835 | Other | Sonoma · Sonoma County | — | — |
| Doug Sanders Painting | Doug Sanders Painting | — | (415) 990 7145 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| Doughty Enterprises | Everett Carl Iii Doughty | — | (707) 566 0146 | Other roofers | Santa Rosa · Sonoma County | — | — |
| Douglas Painting & Decorating | Douglas Painting & Decorating | — | (707) 569 9024 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Dovetail Building & Design | Daniel Francis Ronchelli | — | (707) 321 7551 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Down Under Construction | Gregory Dean Drew | — | (707) 974 6577 | Other | Sebastopol · Sonoma County | — | — |
| Downforce Construction | Dylan James Hughes | — | (415) 717 3923 | GC, remodel, ADU | Cazadero · Sonoma County | — | — |
| Dr Electric LLC | David Jacob Ramirez | — | (707) 484 1630 | Electricians | Santa Rosa · Sonoma County | — | — |
| Dr Handyman Hd | Darren Jay Martin | info@drhandymandhd.com | (707) 696 6210 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Dragon Fly Stream Enhancement | Dragon Fly Stream Enhancement | — | (707) 527 2900 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |