| Dondiego Roofing INC | Jose Anguiano | — | (805) 218 6413 | Other roofers | Oxnard · Ventura County | — | — |
| Done Dandy INC | Bryce Garrison Wilmeth | — | (805) 535 5130 | Other | Ventura · Ventura County | — | — |
| Donkersgoed Construction Co | Kenneth Glenn Donkersgoed | — | (805) 551 1724 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Donlon Plumbing INC | Peter James Donlon | — | (805) 985 8885 | Other | Oxnard · Ventura County | — | — |
| Donovan Roofing | Richard Mead Donovan | — | (805) 432 2937 | Other roofers | Simi Valley · Ventura County | — | — |
| Door Solutions INC | Evelyn Wy Mak | — | (805) 498 7883 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Doors And Finish | Doors And Finish | — | (805) 492 3727 | Other | Thousand Oaks · Ventura County | — | — |
| Doors Are Us | Doors Are Us | — | (805) 564 4254 | Other | Oxnard · Ventura County | — | — |
| Dorado Construction & Design | Anthony James Dorado | — | (805) 390 6677 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Dos Amigos Painting | Dos Amigos Painting | info@dosamigospainting.com | (805) 416 4534 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Doug Best | Doug Best | — | (805) 807 3682 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Doug Gee Quality Painting | Doug Gee Quality Painting | — | (805) 584 8434 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Doug Moore Excavating | Doug Moore Excavating | — | (805) 758 1193 | Other | Fillmore · Ventura County | — | — |
| Doug Nelinger General Contractor | Doug Nelinger General Contractor | — | (805) 526 4561 | GC, remodel, ADU | Santa Susana · Ventura County | — | — |
| Doug Reu's Poolworks | Doug Reu's Poolworks | — | (805) 577 6822 | Pool | Simi Valley · Ventura County | — | — |
| Doug Terzian Construction INC | Douglas Joseph Terzian | — | (805) 484 9227 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Dougherty Welding | Dougherty Welding | — | (805) 908 5909 | Other | Newbury Park · Ventura County | — | — |
| Douglas A Wight Painting Contractor | Douglas A Wight Painting Contractor | — | (805) 985 8678 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Douglas C Bradford | Douglas C Bradford | — | (805) 415 1072 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Douglas Gibson Painting | Douglas Gibson Painting | — | (805) 527 0248 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Douglas Martin Polito | Douglas Martin Polito | — | (805) 428 5506 | Other | Thousand Oaks · Ventura County | — | — |
| Douglas W Johnson DBA W F C | W F C | — | (805) 907 1272 | Electricians | Westlake Village · Ventura County | — | — |
| Douglas Wade Warner | Douglas Wade Warner | — | (805) 377 5946 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Douglass Design + Build | Kevin Garrett Douglass | — | (805) 338 6746 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Dower Construction | Patrick Edward Dower | — | (805) 444 3664 | Other | Thousand Oaks · Ventura County | — | — |
| Dr Drywall | Dr Drywall | — | (805) 581 4104 | Other | Simi Valley · Ventura County | — | — |
| Dr Electric | David Alan Roberson | — | (805) 822 9196 | Electricians | Camarillo · Ventura County | — | — |
| Dr Electric Company | Patrick Dylan Rieder | — | (805) 625 2241 | Electricians | Santa Paula · Ventura County | — | — |
| Dr HVAC | Dr HVAC | — | (805) 377 4719 | HVAC | Moorpark · Ventura County | — | — |
| Dragan Construction INC | Dragan Mijailovic | — | (818) 419 2143 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Dragoo Construction INC | Clayton Glenn Dragoo | — | (509) 832 1157 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Draper Construction | Robert Keith Draper | — | (818) 535 0026 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Drapery A Fair / The Floor Store | Mario Castro Barraza | — | (805) 339 0883 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Drd Builders INC | Daniel Ray Dingman | — | (805) 499 0600 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Dream Green Landscape | Brandon John Lodder | — | (805) 390 6017 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Drew General Contracting | Andrew Tho Robertson | — | (805) 402 9665 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Drewco Air Conditioning | Drewco Air Conditioning | — | (805) 873 6140 | HVAC | Newbury Park · Ventura County | — | — |
| Drill Junkies INC | Jeffrey Goddard | — | (805) 276 0976 | Other | Camarillo · Ventura County | — | — |
| Drip Squad Plumbing & Drain LLC | Aviran Kapah | — | (650) 667 9211 | Other | Thousand Oaks · Ventura County | — | — |
| Drive-thru Pros INC | Esteban Reyes | — | (800) 559 1736 | Other | Simi Valley · Ventura County | — | — |