| Daniels Construction | Gregory Lamont Daniels | — | (805) 218 2573 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Daniels Electric Company | Bryan Michael Daniel | information@danielselectric.com | (805) 404 3159 | Electricians | Ventura · Ventura County | — | — |
| Daniels Remodeling | Daniels Remodeling | — | (805) 328 1152 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Danny Chairez | Danny Chairez | — | (805) 215 4301 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Danny D Nolan | Danny D Nolan | — | (805) 368 8230 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Danny J Eggert | Danny J Eggert | — | (805) 312 0316 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Danous Construction INC | Odisho Baghdanous | — | (818) 425 8138 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Daringer Construction | Philip Edwin Iii Daringer | — | (805) 915 9306 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Daringer Development INC | Philip Edwin Iii Daringer | — | (805) 415 4435 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Dariusz Jedrasik | Dariusz Jedrasik | — | (818) 943 5902 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Darlene D Kimbell | Darlene D Kimbell | — | (805) 379 1276 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Darrell Roy Enterprises INC | Darrell Allen Roy | — | (805) 389 1860 | Other | Camarillo · Ventura County | — | — |
| Darren J Coley | Darren J Coley | — | (805) 304 2769 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Darren M Thomas | Darren M Thomas | — | (805) 258 3918 | Windows, patio, painters | Ventura · Ventura County | — | — |
| Darvic Painting INC | Victor Gabriel Ortiz | — | (805) 987 3670 | Windows, patio, painters | Ventura · Ventura County | — | — |
| Das Remodeling | Dariush Arshammehr | — | (818) 940 7008 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Databilt | Robert Vilas Johnson | — | (805) 857 3901 | Other | Simi Valley · Ventura County | — | — |
| Datatel Network Cabling A California Corporation | Thomas Richard Decato | — | (805) 584 9381 | Other | Simi Valley · Ventura County | — | — |
| Dave Lane Construction Co | David Edward Lane | d.lane21@verizon.net | (805) 493 9229 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Dave O White Jr | Dave O White Jr | — | (805) 479 4305 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Dave's Quality Plumbing LLC | David Bruce Morgan | — | (805) 526 6007 | Other | Simi Valley · Ventura County | — | — |
| Dave's Signs | Chris Nels Compton | — | (805) 641 1387 | Other | Ventura · Ventura County | — | — |
| David A Cates | David A Cates | — | (661) 978 8677 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| David Alexander Trephan | David Alexander Trephan | — | (805) 797 4251 | Electricians | Thousand Oaks · Ventura County | — | — |
| David Allen Culbertson | David Allen Culbertson | — | (805) 432 6951 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| David Alocen | David Alocen | — | (310) 492 3947 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| David Alocen | David Alocen | — | (310) 492 3947 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| David Arden Katz | David Arden Katz | — | (805) 657 2435 | Other roofers | Simi Valley · Ventura County | — | — |
| David Atkin Construction INC | David Levi Atkin | — | (805) 642 1958 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| David B Dames | David B Dames | — | (805) 579 1661 | Electricians | Simi Valley · Ventura County | — | — |
| David B Olsen | David B Olsen | — | (214) 564 7406 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| David Blackstock | David Blackstock | — | (805) 469 6827 | Electricians | Ventura · Ventura County | — | — |
| David De Santis Construction | David Edward De Santis | — | (805) 320 6195 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| David Eberts Roofing Company | David John Eberts | — | (805) 794 8516 | Other roofers | Simi Valley · Ventura County | — | — |
| David Ferrin | David Ferrin | — | (805) 794 2434 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| David Gonzales Backflow & Plumbing Services INC | David Paul Gonzales | — | (805) 218 8704 | Other | Ventura · Ventura County | — | — |
| David Guzman Construction | David Trujillo Guzman | — | (805) 797 7002 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| David H Snow Garden Designs | David H Snow Garden Designs | — | (805) 390 7227 | Windows, patio, painters | Thousand Oaks · Ventura County | — | — |
| David Heinrichs | David Heinrichs | — | (805) 402 6975 | Other | Newbury Park · Ventura County | — | — |
| David J Coates DBA Anacapa Sash & Mirror | Anacapa Sash & Mirror | — | (805) 901 4003 | Windows, patio, painters | Oxnard · Ventura County | — | — |