| Dassow Glass Company | Mario Alberto Dassow | — | (707) 753 6036 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| Dave Bailey Construction INC | David Joseph Bailey | — | (707) 484 4078 | GC, remodel, ADU | Healdsburg · Sonoma County | — | — |
| Dave Poulson's Excavating | Dave Poulson's Excavating | — | (707) 526 1462 | Other | Santa Rosa · Sonoma County | — | — |
| David Alan Pitts | David Alan Pitts | — | (707) 974 7645 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| David Bailey Deck Builder | David Bailey Deck Builder | — | (707) 227 8729 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| David Bruce Construction | David Matthew Bruce | — | (707) 861 2368 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| David Chiddix Construction | David Andrew Gilli Chiddix | — | (707) 321 5279 | GC, remodel, ADU | Graton · Sonoma County | — | — |
| David Dorman Hardwoods | David Dorman Hardwoods | — | (707) 481 8798 | Other | Santa Rosa · Sonoma County | — | — |
| David Fowler Designs INC | David Allen Fowler | dfowlerdesigns@gmail.com | (707) 331 5199 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| David G Griffiths | David G Griffiths | — | (707) 389 8080 | Electricians | Sebastopol · Sonoma County | — | — |
| David Harris Electric | David John Harris | — | (707) 230 3671 | Electricians | Santa Rosa · Sonoma County | — | — |
| David Haug | David Haug | — | (707) 321 0407 | Other | Cloverdale · Sonoma County | — | — |
| David Hodge Construction | David Joseph Hodge | — | (707) 494 0915 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| David J Granahan Construction | David James Granahan | — | (707) 486 3986 | GC, remodel, ADU | Guerneville · Sonoma County | — | — |
| David James Backhoe Service LLC | David Russell James | — | (707) 823 4612 | Other | Graton · Sonoma County | — | — |
| David L Hamilton | David L Hamilton | — | (707) 484 4159 | GC, remodel, ADU | Bodega · Sonoma County | — | — |
| David L Jones Construction | David Leroy Jones | — | (707) 486 0823 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| David Little Painting | David Little Painting | — | (707) 888 8498 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| David Makovec Incorporated DBA California Roof Savers Of Marin | Stephen George Ii Knaze | — | (707) 769 1170 | Other roofers | Penngrove · Sonoma County | — | — |
| David Papenhausen | David Papenhausen | — | (707) 763 7980 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| David Rodarmel INC DBA Free Enterprises | David Roy Rodarmel | — | (707) 538 3007 | Other roofers | Santa Rosa · Sonoma County | — | — |
| David S Richter | David S Richter | — | (707) 321 5380 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| David S Sharpe | David S Sharpe | — | (707) 363 5768 | GC, remodel, ADU | Healdsburg · Sonoma County | — | — |
| David Sawyer Landscapes | David Sawyer Landscapes | — | (707) 570 5796 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| David Secchitano's Electric | David Phillip Jr Secchitano | — | (707) 843 6382 | Electricians | Cloverdale · Sonoma County | — | — |
| David Straube Construction DBA Dsc Custom Creations | David Lee Jr Straube | — | (707) 548 1937 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| David Wagner Construction | David Tomas Wagner | — | (707) 483 5865 | GC, remodel, ADU | Cloverdale · Sonoma County | — | — |
| Davila Roofing INC | Aaron Israel Davila Romero | — | (707) 312 0681 | Other roofers | Annapolis · Sonoma County | — | — |
| Davis Does Contracting | Diane Hazel Davis | — | (707) 664 8656 | GC, remodel, ADU | Penngrove · Sonoma County | — | — |
| Davis Painting | Davis Painting | office@davispainting.com | (707) 478 9751 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Dawson Construction | David Paul Dawson | — | (707) 478 3191 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Dax Clark Construction INC | Dax Bowen Clark | — | (707) 823 5856 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Day Tree Service INC | John Franklin Iv Day | — | (707) 586 8733 | Tree | Santa Rosa · Sonoma County | — | — |
| Dc Tile And Stone | Derek Alan Kahn | — | (415) 533 7700 | Other | Santa Rosa · Sonoma County | — | — |
| Dd Builders | Derek Rowland Nelson | — | (707) 303 5292 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| De Anda Landscaping INC | De Anda Loza Daniel | — | (707) 953 3784 | Windows, patio, painters | Sonoma · Sonoma County | — | — |
| De Anda Painting INC | Anda Loza Victor De | — | (707) 481 9749 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| De Ayala Construction | Gabriel S Ayala | deayalaconstruction5@gmail.com | (415) 871 4643 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| De Benedetti Electric | Joseph Anthony De Benedetti | — | (707) 696 0279 | Electricians | Santa Rosa · Sonoma County | — | — |
| De Jong Construction INC | De Jong Mark | mdejong1112@gmail.com | (415) 747 7023 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |