| Cutright Construction INC | Brian David Cutright | cutrightconstruction2@gmail.com | (415) 299 3762 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Cutting Edge Asphalt | Cutting Edge Asphalt | — | (707) 771 9922 | Other | Santa Rosa · Sonoma County | — | — |
| Cutting Edge Cabinet | Cutting Edge Cabinet | — | (707) 494 4853 | Other | Santa Rosa · Sonoma County | — | — |
| Cutting Edge Floor Service | Edward John Lydon | — | (707) 480 1223 | Other | Santa Rosa · Sonoma County | — | — |
| Cutting Edge Painting | Cutting Edge Painting | — | (707) 703 6539 | Windows, patio, painters | Windsor · Sonoma County | — | — |
| Cutting Edge Sheet Metal Incorporated | Samuel Edward Duke Flournoy | — | (707) 239 3590 | Other | Santa Rosa · Sonoma County | — | — |
| Cv Drywall | Cv Drywall | — | (707) 837 8449 | Other | Windsor · Sonoma County | — | — |
| Cva Drywall INC | Clint Cord Van Adrichem | — | (707) 321 0909 | Other | Windsor · Sonoma County | — | — |
| Cwiw INC | Steven Lee Moore | — | (707) 894 0421 | Other | Cloverdale · Sonoma County | — | — |
| Cwm Concrete INC | Clyde William Jr Mcfarlane | — | (707) 529 7473 | Other | Rohnert Park · Sonoma County | — | — |
| Czs Construction | Victor Arthur Zimmerman | — | (707) 800 2066 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| D & D Drywall INC | David Ignacio Topete | — | (707) 757 0448 | GC, remodel, ADU | Fulton · Sonoma County | — | — |
| D & D Glassworks INC | David Richard Bryant | — | (707) 536 9183 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| D & L Kelly Heating And Air Conditioning | David Allen Kelly | — | (707) 975 5932 | HVAC | Santa Rosa · Sonoma County | — | — |
| D & M Pool And Spa Service | Darrell Allen O'neal | — | (707) 217 1546 | Pool | Santa Rosa · Sonoma County | — | — |
| D & M Underground Construction INC | Jared Wayne Muelrath | — | (707) 778 1705 | Other | Petaluma · Sonoma County | — | — |
| D & M Utility Services Of Ca | Michael Alexander Mc Intosh | — | (707) 483 5951 | Other | Penngrove · Sonoma County | — | — |
| D & P General Contracting | David Whitney Harts | — | (707) 327 9407 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| D & R Construction | David Peter Frym | — | (707) 792 0818 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| D - Built Construction Company | Darrell Keith Brittain | — | (707) 579 7995 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| D A De Lave Construction And Design | Donald Alan De Lave | — | (415) 250 8070 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| D And J Enterprises | Daniel Abraham Noar | — | (707) 578 6002 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| D B I Contracting INC | Derek David Richar Dailey | — | (530) 520 4602 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| D Butler Electric | Dylan Jeffrey Butler | dylan@dbutlerelectric.com | (707) 327 7378 | Electricians | Sebastopol · Sonoma County | — | — |
| D C Electric Group INC | David Michael Delicio | info@dcelectricgroup.com | (707) 992 0141 | Electricians | Cotati · Sonoma County | — | — |
| D C Valley Electric INC | Diego Carrillo-Carrillo | — | (707) 727 3580 | Electricians | Boyes Hot Springs · Sonoma County | — | — |
| D E Jones Enterprise | D E Jones Enterprise | — | (707) 799 6382 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| D G Construction | Damon Michael Gronlund | — | (707) 293 7035 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| D G Pool Service | David William Gossett | — | (707) 479 9090 | Pool | Healdsburg · Sonoma County | — | — |
| D G Refrigeration | D G Refrigeration | — | (707) 477 5882 | HVAC | Santa Rosa · Sonoma County | — | — |
| D H Construction | Hofbauer Dan | — | (707) 824 0423 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| D J S Steel Company INC | Wendi Renee Anken | — | (707) 938 2356 | Other | Sonoma · Sonoma County | — | — |
| D L Cameron Construction INC | Dennis Leon Cameron | — | (510) 719 3761 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| D L G Electric | David Lewis Gosbell | — | (707) 529 6524 | HVAC | Sebastopol · Sonoma County | — | — |
| D Lomeli Electric | Lomeli Dennis | — | (707) 483 9991 | Electricians | Santa Rosa · Sonoma County | — | — |
| D M I | D M I | — | (707) 889 2649 | Electricians | Santa Rosa · Sonoma County | — | — |
| D R Fence Co | Rebhey Diab Hammoudeh | — | (707) 758 0580 | Other | Rohnert Park · Sonoma County | — | — |
| D S Builders | D S Builders | — | (707) 592 0678 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| D V L Construction Corporation | Luis Fredy Venegas Zarate | — | (707) 774 1867 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| D W Acoustics INC | Daniel Leon Wyrick | contact@dwacoustics.com | (707) 575 6117 | Other | Santa Rosa · Sonoma County | — | — |