| D Extreme Plumbing | D Extreme Plumbing | — | (714) 265 9087 | Other | Garden Grove · Orange County | — | — |
| D F Dewitt Co | Dennis Frank Dewitt | — | (949) 233 8059 | GC, remodel, ADU | Capistrano Beach · Orange County | — | — |
| D F Landscape Maintenance | D F Landscape Maintenance | — | (714) 814 5530 | Windows, patio, painters | Lake Forest · Orange County | — | — |
| D F Natural Stone INC DBA Di Franco Stone Specialist | Franco Maurizio Di | — | (714) 870 4600 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| D F Perez Construction INC | David F Perez | — | (714) 774 4778 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| D F Plumbing INC | Osorio Ruben Hernandez | — | (949) 632 9636 | Other | Lake Forest · Orange County | — | — |
| D Fredianelli Construction | David Louis Fredianelli | — | (949) 637 4009 | GC, remodel, ADU | Laguna Hills · Orange County | — | — |
| D G & E Enterprises DBA D & B General Contractors | Daniel Edward Gutowski | — | (619) 254 8895 | GC, remodel, ADU | Laguna Niguel · Orange County | — | — |
| D G Plumbing | D G Plumbing | — | (714) 322 7699 | Other | Placentia · Orange County | — | — |
| D Gill Construction Co | David Jeffery Gill | d.gillconstructionltd@gmail.com | (949) 632 8424 | GC, remodel, ADU | Lake Forest · Orange County | — | — |
| D H I Construction INC | Deeb Karl | — | (714) 336 6833 | GC, remodel, ADU | Irvine · Orange County | — | — |
| D H K Construction & Management INC | Mike | — | (888) 528 0666 | GC, remodel, ADU | Costa Mesa · Orange County | — | — |
| D H M Construction INC | Stanislaw Zbigniew Jr Majcher | — | (714) 686 4027 | GC, remodel, ADU | Orange · Orange County | — | — |
| D H Q Custom Cabinet INC | Hong Van Huynh | — | (714) 889 0925 | Other | Westminster · Orange County | — | — |
| D Hills Plumbing | Daniel James Hills | — | (949) 572 8734 | Other | Newport Beach · Orange County | — | — |
| D Hollis Construction INC | Andrew Robert Hollis | — | (949) 370 9876 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| D Home Builders INC | Dror Avisov | — | (310) 850 0406 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| D J A Construction | Donald James Acosta | — | (714) 391 0644 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| D J D Company | Dana John Torabian | — | (949) 584 5048 | GC, remodel, ADU | Mission Viejo · Orange County | — | — |
| D J M Concrete Construction | Scott Allen Machen | — | (714) 328 3061 | Other | La Habra · Orange County | — | — |
| D J's Bobcat Service | Denis William Johnson | — | (714) 390 7332 | Other | Yorba Linda · Orange County | — | — |
| D Johnson Plumbing INC | Darryl Lynell Johnson | — | (714) 799 1907 | Other | Stanton · Orange County | — | — |
| D K Flooring | D K Flooring | — | (949) 525 7453 | Other | Laguna Beach · Orange County | — | — |
| D K Shower Pans | David Michael Kutscher | — | (949) 305 4980 | Windows, patio, painters | Mission Viejo · Orange County | — | — |
| D L Bone & Sons INC | Jeffrey Porter Bone | — | (714) 523 4841 | Windows, patio, painters | Buena Park · Orange County | — | — |
| D L C Builders INC | Patrick Michael Oconnell | — | (562) 666 7174 | GC, remodel, ADU | Los Alamitos · Orange County | — | — |
| D L Construction Services | David Albert Lacommare | — | (714) 474 5587 | GC, remodel, ADU | Placentia · Orange County | — | — |
| D L E Lighting And Electric INC | Gregory Joseph Durand | — | (949) 481 7725 | Electricians | Irvine · Orange County | — | — |
| D L Glass | Kevin Shihao Yu | — | (310) 729 8623 | Windows, patio, painters | Anaheim · Orange County | — | — |
| D L Hann Painting INC | Darryl Les Hann | — | (714) 724 2390 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| D L Hann Painting INC DBA D L Hann Construction Company | Darryl Les Hann | — | (714) 724 2390 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| D L Russell Drywall & Paint Incorporated | Donald Lee Russell | — | (714) 538 8167 | Windows, patio, painters | Orange · Orange County | — | — |
| D L S Builders | David Scott Jr Schalliol | — | (714) 998 3790 | GC, remodel, ADU | Orange · Orange County | — | — |
| D L Sepulveda INC DBA Sepulveda Electric | David Luis Sepulveda | — | (714) 272 1300 | Electricians | Anaheim · Orange County | — | — |
| D L Sinjem Company INC | Douglas Lawrence Sr Sinjem | — | (562) 694 0949 | GC, remodel, ADU | La Habra · Orange County | — | — |
| D M & M Capital INC DBA National Visual Systems | Debra Hepps Mc Kee | — | (714) 891 2670 | Other | Huntington Beach · Orange County | — | — |
| D M A C Paving INC | Derek Jeffrey Mackey | — | (714) 983 7128 | Other | Yorba Linda · Orange County | — | — |
| D M B Electric Corp | David Michael Bulfer | — | (714) 404 8518 | Electricians | Orange · Orange County | — | — |
| D M J S INC | Daniel| Kang Chang Sik Kang | — | (714) 670 9223 | Other roofers | Buena Park · Orange County | — | — |
| D M Leslie Construction Company | Daniel Marcus Leslie | — | (949) 291 2869 | GC, remodel, ADU | Mission Viejo · Orange County | — | — |