| David Malka | David Malka | — | (310) 598 8941 | GC, remodel, ADU | Irvine · Orange County | — | — |
| David Marshall Kelly | David Marshall Kelly | — | (714) 893 2092 | Windows, patio, painters | Garden Grove · Orange County | — | — |
| David Melilli Company | David Victor Melilli | — | (949) 586 4750 | GC, remodel, ADU | Laguna Hills · Orange County | — | — |
| David Najera Concrete Cutting | David Najera Concrete Cutting | — | (714) 612 9204 | Other | Santa Ana · Orange County | — | — |
| David Oakley Construction | David Robert Oakley | — | (714) 655 2035 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| David Ochoa Installations INC | David Louis Ochoa | — | (949) 290 0633 | Other | Laguna Beach · Orange County | — | — |
| David Olmsted | David Olmsted | — | (714) 536 3687 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| David Osinga | David Osinga | — | (714) 878 3283 | Pool | Yorba Linda · Orange County | — | — |
| David Patroni | David Patroni | — | (626) 386 8070 | Electricians | Seal Beach · Orange County | — | — |
| David Perez Romero | David Perez Romero | — | (949) 439 5746 | Pool | Mission Viejo · Orange County | — | — |
| David Pipitone Electric | Pipitone David | — | (949) 635 5813 | Electricians | San Clemente · Orange County | — | — |
| David R Coston | David R Coston | — | (949) 378 1807 | Other | Laguna Niguel · Orange County | — | — |
| David R Lapidus | David R Lapidus | — | (310) 993 7125 | GC, remodel, ADU | Coto De Caza · Orange County | — | — |
| David R Prolo Enterprises | David Robert Prolo | — | (949) 229 3255 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| David Rance Interiors | David Rance Interiors | — | (714) 404 0504 | GC, remodel, ADU | Santa Ana · Orange County | — | — |
| David Rodriguez | David Rodriguez | — | (310) 291 2446 | Other | Cypress · Orange County | — | — |
| David Sadat | David Sadat | — | (949) 561 7140 | Electricians | Mission Viejo · Orange County | — | — |
| David Scott Schalliol | David Scott Schalliol | — | (714) 998 3790 | GC, remodel, ADU | Orange · Orange County | — | — |
| David Simon DBA Shancor | David Simon DBA Shancor | — | (714) 448 7155 | Other | Tustin · Orange County | — | — |
| David Simpson Construction Co INC | Michael Dennis Simpson | — | (949) 250 1348 | GC, remodel, ADU | Irvine · Orange County | — | — |
| David Smith Construction Company INC | Smith David | — | (949) 412 8957 | GC, remodel, ADU | Lake Forest · Orange County | — | — |
| David T Powell Const | David T Powell Const | — | (949) 533 6175 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| David Tile INC | Simon David Jose | — | (714) 929 9339 | Other | Santa Ana · Orange County | — | — |
| David Twellman | David Twellman | — | (714) 287 2735 | Windows, patio, painters | Cypress · Orange County | — | — |
| David Vaughn Construction INC | David Rockwell Vaughn | — | (657) 217 7532 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| David Ventura Concrete & Masonry | David Ventura Concrete & Masonry | — | (714) 651 8778 | Other | Huntington Beach · Orange County | — | — |
| David West Peter | David West Peter | — | (949) 492 3740 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| David Zadmer | David Zadmer | — | (310) 360 1225 | Other | Irvine · Orange County | — | — |
| David's Tree Service INC | David Paul Diaz | — | (714) 842 6345 | Tree | Huntington Beach · Orange County | — | — |
| Davidson Construction & Plumbing INC | Robert Stuart Davidson | — | (949) 940 5945 | Electricians | Mission Viejo · Orange County | — | — |
| Davidson Contracting | Thomas John Davidson | — | (714) 342 7462 | Electricians | Orange · Orange County | — | — |
| Davidson Electric | Paul Thomas Davidson | — | (949) 496 1530 | Electricians | Capistrano Beach · Orange County | — | — |
| Davinci Mechanical LLC | Thomas Richard Walsh | — | (714) 594 9194 | HVAC | Orange · Orange County | — | — |
| Davis Electric | John Charles Davis | — | (714) 544 3298 | Electricians | Orange · Orange County | — | — |
| Davis Fire Protection | Davis Fire Protection | — | (800) 685 5730 | Other | Huntington Beach · Orange County | — | — |
| Davis Landscape INC | David Eugene Meece | — | (714) 832 6546 | Windows, patio, painters | Tustin · Orange County | — | — |
| Davison & Moore Commercial Flooring | Clinton William Dudley | — | (949) 252 0101 | Other | Costa Mesa · Orange County | — | — |
| Day & Nite Doors INC | Melanie Ann Christy | — | (714) 961 1141 | Other | Anaheim · Orange County | — | — |
| Day 1 Services INC | Kevin Francis Kondrot | — | (949) 493 1701 | Electricians | Laguna Hills · Orange County | — | — |
| Day Construction | Shir Firouz | — | (713) 444 7880 | GC, remodel, ADU | Laguna Niguel · Orange County | — | — |