| D W Drywall INC | Daniel Ernest Wells | dwdrywall2@yahoo.com | (707) 481 0272 | Other | Sebastopol · Sonoma County | — | — |
| D W Enterprises | Douglas Gordon Wood | — | (707) 887 9668 | Other | Forestville · Sonoma County | — | — |
| D West Installations Floors | D West Installations Floors | — | (707) 508 9591 | Other | Santa Rosa · Sonoma County | — | — |
| D&g Lath & Plastering | D&g Lath & Plastering | — | (707) 971 4160 | Other | Santa Rosa · Sonoma County | — | — |
| D3 Consult Design Build INC | Nathaniel Tavis Robison-De Fever | — | (707) 800 5064 | GC, remodel, ADU | Penngrove · Sonoma County | — | — |
| Daher Development INC | Bryan David Daher | — | (707) 477 7752 | Other | Windsor · Sonoma County | — | — |
| Daily Acts Landscaping | Elizabeth Catherine Gu Platte-Bermeo | — | (707) 789 9664 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| Dain Stephens Design Build | Dain Stephens Design Build | — | (707) 239 2424 | GC, remodel, ADU | Healdsburg · Sonoma County | — | — |
| Dak Concrete INC | Magana Jesus Diaz | — | (707) 756 2603 | Other | Santa Rosa · Sonoma County | — | — |
| Dale Builders INC | Daniel George Dale | anapbm@gmail.com | (707) 433 7327 | GC, remodel, ADU | Healdsburg · Sonoma County | — | — |
| Dale Heating Cooling & Sheetmetal INC | Jason Wade Dale | — | (707) 526 5709 | HVAC | Santa Rosa · Sonoma County | — | — |
| Dale Long Construction | Dale Elliott Long | — | (707) 824 9233 | GC, remodel, ADU | Fulton · Sonoma County | — | — |
| Damazio Excavating INC | Robert Michael Damazio | linton@yourwebdawgs.com | (707) 789 9998 | Other | Petaluma · Sonoma County | — | — |
| Damian Construction | Carlos Alberto Damian | — | (707) 843 2391 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Damran Electric | Vance Edwin Damran | — | (707) 894 4001 | Electricians | Cloverdale · Sonoma County | — | — |
| Dan Arapov Cabinetry | Dan Arapov Cabinetry | — | (707) 478 5220 | Other | Windsor · Sonoma County | — | — |
| Dan Boyle Construction | Daniel Philip Boyle | — | (707) 486 9225 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Dan Davis Communications | Dan Davis Communications | — | (707) 584 3930 | Other | Rohnert Park · Sonoma County | — | — |
| Dan Imler Painting | Dan Imler Painting | — | (707) 585 0384 | Windows, patio, painters | Healdsburg · Sonoma County | — | — |
| Dan L Vanek DBA Dacasa Construction | Daniel Lawrence Vanek | — | (707) 280 8973 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Dan Mcgee Plastering | Dan Mcgee Plastering | — | (707) 484 4738 | Other | Windsor · Sonoma County | — | — |
| Dan The Painter INC | Daniel Alberto Morales | — | (707) 655 7099 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Dan The Plumber | Dan The Plumber | — | (707) 953 4829 | Other | Santa Rosa · Sonoma County | — | — |
| Dan Viele Associates | Daniel Thomas Viele | — | (707) 888 5101 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Dana Kitchens & Associates INC | Dana Robin Kitchens | — | (707) 571 8326 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Dance Builders Enterprises INC | Maurice Cecil Dance | — | (707) 228 5780 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Daniel Chavez Framing | Daniel Chavez Framing | — | (707) 343 5741 | Other | Sonoma · Sonoma County | — | — |
| Daniel J Bowen Construction INC | Daniel Joseph Bowen | — | (707) 481 2903 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Daniel O Davis INC | Daniel Orlan Davis | — | (707) 585 1903 | Other | Santa Rosa · Sonoma County | — | — |
| Daniel Stephen Szumski | Daniel Stephen Szumski | — | (510) 418 7155 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Daniel Stone Tile | Daniel Stone Tile | — | (707) 921 9606 | Other | Rohnert Park · Sonoma County | — | — |
| Daniel T Steinhauer | Daniel T Steinhauer | — | (415) 720 8185 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Daniel V Walters Construction | Daniel Vernon Walters | — | (707) 291 5931 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Daniel's Plumbing & Drain Co | Daniel Rey Puente | — | (707) 343 5253 | Other | Santa Rosa · Sonoma County | — | — |
| Daniela A Alvarado Ramirez DBA North Bay Tree Service | Daniela Alejandra Alvarado Ramirez | — | (415) 570 1545 | Tree | Cotati · Sonoma County | — | — |
| Dany Custom Builds INC | Daniel Alejandro Gonzalez Banuelos | — | (415) 599 9997 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Darling And Associates INC | Thomas Lawrence Darling | — | (707) 546 4615 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Darrel D Welch | Darrel D Welch | — | (707) 996 8730 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Darrell Anderson Flooring | Darrell Anderson Flooring | — | (707) 799 2354 | Other | Santa Rosa · Sonoma County | — | — |
| Darrin Rogers Quality Painters | Darrin Rogers Quality Painters | — | (707) 568 1500 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |