| D O T Plumbing And Construction | Tellez German | — | (626) 232 1413 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| D P Floor Covering | D P Floor Covering | — | (909) 851 5089 | Other | Menifee · Riverside County | — | — |
| D R B Construction | David Rock Berkey | — | (602) 466 0994 | GC, remodel, ADU | La Quinta · Riverside County | — | — |
| D R C General Contracting | Douglas Timothy Rose | — | (760) 504 9950 | GC, remodel, ADU | Winchester · Riverside County | — | — |
| D R Discing & Mowing | Douglas Conroy Reed | — | (951) 657 1050 | Windows, patio, painters | Perris · Riverside County | — | — |
| D R Dryden Const | D R Dryden Const | — | (760) 578 1056 | GC, remodel, ADU | Thousand Palms · Riverside County | — | — |
| D R H Construction | David Ross Huffman | daveh@drhconstruction.com | (951) 783 9494 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| D R Horton America's Builder | Mathew Evan Dunahoo | — | (951) 272 9000 | Builders | Corona · Riverside County | — | — |
| D R Horton America's Builder | Jeff Alan Goeson | — | (951) 272 9000 | Builders | Corona · Riverside County | — | — |
| D R Hoyle INC DBA Dian Cabinet Company | Dennis Ronald Hoyle | — | (760) 324 5616 | GC, remodel, ADU | Cathedral City · Riverside County | — | — |
| D R Sisneros INC | Daniel Richard Sisneros | — | (951) 545 6974 | Other | Menifee · Riverside County | — | — |
| D S C Construction INC | Todd Jens Cooney | — | (714) 526 7200 | GC, remodel, ADU | Perris · Riverside County | — | — |
| D S Electric Signs | Timothy John Holland | — | (909) 866 7446 | Other | Murrieta · Riverside County | — | — |
| D S Ground Services INC | Daniel Partida Salazar | — | (760) 902 3685 | Windows, patio, painters | Thousand Palms · Riverside County | — | — |
| D S Grounded Electric | David Michael Sluder | — | (951) 795 7073 | Electricians | Menifee · Riverside County | — | — |
| D S P Electrical Contractors INC | Shannon | — | (951) 707 4409 | Electricians | Lake Elsinore · Riverside County | — | — |
| D S Pool Service | David John Schloemer | — | (951) 870 6454 | Pool | Corona · Riverside County | — | — |
| D S U Utility Trenching INC | Donald Leon Spraggins | — | (951) 353 2888 | Other | Riverside · Riverside County | — | — |
| D Soto Stone INC | Manuel Diarte Soto | — | (760) 404 7400 | Other | Desert Hot Springs · Riverside County | — | — |
| D T Drywall Interior | Torres Daniel | — | (951) 902 0426 | Other | Perris · Riverside County | — | — |
| D T E | D T E | — | (716) 863 0163 | Electricians | Riverside · Riverside County | — | — |
| D T Stellar General Engineering | Daniel Allan Ii Gould | — | (951) 234 2668 | Other | Winchester · Riverside County | — | — |
| D Thomas Construction | Dolleschal Thomas | — | (626) 926 4111 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| D V A Plumbing | D V A Plumbing | — | (951) 746 8148 | Other | Wildomar · Riverside County | — | — |
| D Varela Plumbing / General Contractor | Varela David | — | (951) 640 3486 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| D W Construction | Derek Scott Walkington | — | (661) 858 3359 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| D W Johnston Construction INC | David Wayne Johnston | — | (760) 416 1144 | GC, remodel, ADU | Rancho Mirage · Riverside County | — | — |
| D&a Bros Construction | Hernandez David Mosqueda | — | (951) 729 0413 | GC, remodel, ADU | Banning · Riverside County | — | — |
| D&a Painting INC | Edher Garcia | — | (951) 285 7189 | Windows, patio, painters | Lake Elsinore · Riverside County | — | — |
| D&c Morales Construction INC | Juan Daniel Morales | — | (760) 219 2622 | GC, remodel, ADU | Cathedral City · Riverside County | — | — |
| D&d Installers DBA D&d Synthetic Countertop Installers | Christopher Moreno | — | (909) 795 5900 | Other | Calimesa · Riverside County | — | — |
| D' Ybanag Construction Company | Lucio Salagan Collado | info@dybanagconstruction.com | (626) 318 8904 | Electricians | Perris · Riverside County | — | — |
| D'agostino Design INC | Anthony Michael D'agostino | gd387@drexel.edu | (309) 826 2879 | GC, remodel, ADU | Palm Desert · Riverside County | — | — |
| D'berber Bravo Roofing INC | Israel Berber-Bravo | — | (714) 920 4288 | Other roofers | Riverside · Riverside County | — | — |
| D'oros Construction | Felipe Oros-Cardenas | — | (760) 408 8295 | GC, remodel, ADU | Sky Valley · Riverside County | — | — |
| D's R Trees INC | Donald Richard Turnbull | — | (951) 545 9291 | Tree | Winchester · Riverside County | — | — |
| D'vargas Construction | Vargas Carlos | — | (951) 662 9370 | GC, remodel, ADU | Mira Loma · Riverside County | — | — |
| D'vega Builders INC | Javier Rodriguez Vega | — | (951) 332 2385 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| D'vega Restoration Co | Javier Rodriguez Vega | — | (657) 428 9702 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| Da Pipe Ninja Plumbing Corp | De La Cruz Andres Alvarez | — | (951) 588 3584 | Other | San Jacinto · Riverside County | — | — |