| Divine Pool Service | Andrew Joseph Campos | — | (909) 717 6072 | Pool | Fontana · San Bernardino County | — | — |
| Divine Pools Co | Stephanie Melissa Ulloa | divine.pools@outlook.com | (909) 292 7050 | Pool | Ontario · San Bernardino County | — | — |
| Dixon Construction Co | Barry Hamilton Dixon | — | (707) 718 1279 | GC, remodel, ADU | Apple Valley · San Bernardino County | — | — |
| Dixon Custom Cabinets | Dixon Custom Cabinets | — | (909) 851 4836 | Other | Alta Loma · San Bernardino County | — | — |
| Dj Callison Construction INC | James Edward Callison | — | (909) 289 9259 | Electricians | Loma Linda · San Bernardino County | — | — |
| Djc Construction | Constantine Daniel | — | (714) 234 7742 | GC, remodel, ADU | Upland · San Bernardino County | — | — |
| Djk General Contracting INC | Daniel James Kolb | — | (951) 452 7350 | GC, remodel, ADU | Apple Valley · San Bernardino County | — | — |
| Djsg General Construction INC | Arturo Cesar Leal Mata | — | (909) 380 2791 | GC, remodel, ADU | Highland · San Bernardino County | — | — |
| Dkbk Electric INC | David Barbosa | info@dkbkelectric.com | (909) 706-9035 | Electricians | Chino Hills · San Bernardino County | — | — |
| Dl Utility Consulting | Dl Utility Consulting | — | (909) 755 6288 | Other | Yucaipa · San Bernardino County | — | — |
| Dlab Drywall INC | Danhya Lorena Alvarez-Barraza | info@indiantypefoundry.com | (909) 527 4567 | Windows, patio, painters | Fontana · San Bernardino County | — | — |
| Dlc Construction | La Cruz Carlos De | — | (909) 993 2989 | GC, remodel, ADU | Chino · San Bernardino County | — | — |
| Dle Construction | Michael Alvarez Alcantara | — | (909) 402 4029 | Electricians | San Bernardino · San Bernardino County | — | — |
| Dlg Builders INC | Jose Luis Guel | sdelagarza@dlgbuilders.com | (562) 506 3993 | GC, remodel, ADU | Fontana · San Bernardino County | — | — |
| Dlt Concrete INC | La Torre Jose De | — | (909) 665 7239 | Other | Colton · San Bernardino County | — | — |
| Dm Mechanical INC | David Marquez | — | (626) 476 6097 | HVAC | Alta Loma · San Bernardino County | — | — |
| Dmc Construction Co | Dean Robert Mastroluca | — | (909) 635 4816 | GC, remodel, ADU | Alta Loma · San Bernardino County | — | — |
| Dmc General Contracting | Dario Alberto Murillo | — | (442) 322 2487 | GC, remodel, ADU | Adelanto · San Bernardino County | — | — |
| Dmg Fire Protection | Fengguang Hao | — | (626) 548 8663 | Electricians | Ontario · San Bernardino County | — | — |
| Dmr Tree Service | Daniel Manuel Ramos-Lopez | — | (909) 437 6757 | Tree | Chino Hills · San Bernardino County | — | — |
| Dmt Electric | Daniel Milan Tannous | — | (626) 392 8842 | Electricians | Upland · San Bernardino County | — | — |
| Dn Builders INC | Juan David Nungaray | — | (323) 301 5959 | GC, remodel, ADU | Montclair · San Bernardino County | — | — |
| Dna Painting & Decorative INC | Diego Armando Lopez | — | (909) 676 9944 | Windows, patio, painters | Rialto · San Bernardino County | — | — |
| Dni Networks INC DBA Dni Air Conditioning And Heating INC | Ding Qin | — | (626) 295 4638 | HVAC | Chino Hills · San Bernardino County | — | — |
| Dnk Tile LLC | David Brandon Mcleland | — | (303) 305 8208 | Other | Rancho Cucamonga · San Bernardino County | — | — |
| Do It All Home Improvements | Allen Fitzgerald Dismuke | — | (909) 208 4670 | GC, remodel, ADU | San Bernardino · San Bernardino County | — | — |
| Do It All Roofing INC | William Walter Wilson | — | (760) 524 1399 | Other roofers | Victorville · San Bernardino County | — | — |
| Doair INC | Zhilin Ye | — | (323) 942 7202 | HVAC | Rancho Cucamonga · San Bernardino County | — | — |
| Dobos Custom Sheet Metal INC | Ryan Nicholas Dobos | — | (760) 907 5398 | Other | Hesperia · San Bernardino County | — | — |
| Doc Construction | Derrick Oliver Caddell | — | (909) 437 8855 | GC, remodel, ADU | San Bernardino · San Bernardino County | — | — |
| Doctor Handyman | Doctor Handyman | — | (909) 949 4503 | GC, remodel, ADU | Upland · San Bernardino County | — | — |
| Doctor Pool | Jeremy Michael Gibbons | — | (909) 757 6056 | Electricians | Rancho Cucamonga · San Bernardino County | — | — |
| Doja INC | Ayad Ahmad Jaber | — | (909) 628 1999 | GC, remodel, ADU | Ontario · San Bernardino County | — | — |
| Domestic Landscape | Domestic Landscape | — | (909) 723 0194 | Windows, patio, painters | Yucaipa · San Bernardino County | — | — |
| Domingo Chavez Apodaca | Domingo Chavez Apodaca | — | (909) 252 1385 | Other | San Bernardino · San Bernardino County | — | — |
| Dominguez & Sons Construction | Alexander Antonio Dominguez | — | (909) 220 2070 | GC, remodel, ADU | Redlands · San Bernardino County | — | — |
| Dominguez Masonry & Landscaping INC | Mariana R Ramirez De Dominguez | — | (909) 463 2886 | Windows, patio, painters | Rancho Cucamonga · San Bernardino County | — | — |
| Dominion AC & Heating | Chavez Samuel Rios | — | (909) 734 0398 | HVAC | Twin Peaks · San Bernardino County | — | — |
| Dominion Security And Power INC | Jacob Aaron Huggins | — | (951) 970 9324 | Electricians | Apple Valley · San Bernardino County | — | — |
| Don Brown Plumbing Contractor | Don Brown Plumbing Contractor | — | (562) 698 8044 | Other | Fontana · San Bernardino County | — | — |