| Don Collins Co | Donald Wayne Collins | — | (951) 751 8922 | GC, remodel, ADU | Big Bear Lake · San Bernardino County | — | — |
| Don Meyer Construction | Donald Lee Meyer | dmcbbl55@gmail.com | (909) 436 9117 | GC, remodel, ADU | Big Bear Lake · San Bernardino County | — | — |
| Don't Sweat It HVAC | Don't Sweat It HVAC | — | (909) 961 7736 | HVAC | San Bernardino · San Bernardino County | — | — |
| Donald G Lopiccolo | Donald G Lopiccolo | — | (909) 463 8349 | HVAC | Rancho Cucamonga · San Bernardino County | — | — |
| Donald M Hoover Co | Camille Marie Gentry | — | (909) 355 0125 | Other | Fontana · San Bernardino County | — | — |
| Donald R Orphey | Donald R Orphey | — | (909) 744 7696 | GC, remodel, ADU | Big Bear Lake · San Bernardino County | — | — |
| Donald Souza Construction Incorporated | Donald Francis Souza | — | (909) 292 6675 | GC, remodel, ADU | Big Bear Lake · San Bernardino County | — | — |
| Done - Right Concrete Construction Services Inc. | Steven Lerone Thompson | — | (760) 985 4172 | Other | Hesperia · San Bernardino County | — | — |
| Done Right Low Voltage | Done Right Low Voltage | — | (909) 693 8534 | Other | San Bernardino · San Bernardino County | — | — |
| Done Rite Roofing INC | Randolph Joe Lunetta | — | (840) 268 9052 | Other roofers | San Bernardino · San Bernardino County | — | — |
| Donegan Tree Service | Garth Nyle Donegan | — | (909) 889 4304 | Tree | San Bernardino · San Bernardino County | — | — |
| Dong Lu Electric | Lu Dong | — | (626) 247 1160 | Electricians | Chino Hills · San Bernardino County | — | — |
| Dong Phu Luu | Dong Phu Luu | — | (626) 831 3561 | Other | Colton · San Bernardino County | — | — |
| Dongu Drywall INC | Aguirre Antonio Robles | — | (909) 436 8007 | Other | Lytle Creek · San Bernardino County | — | — |
| Donica Plumbing | Donica Plumbing | — | (909) 273 7739 | Other | Crestline · San Bernardino County | — | — |
| Donnelly Construction INC | Shawn Bradley Donnelly | — | (760) 646 4920 | GC, remodel, ADU | Hesperia · San Bernardino County | — | — |
| Donovan Development LLC | Donovan Ray Damron | — | (760) 955 9595 | GC, remodel, ADU | Hesperia · San Bernardino County | — | — |
| Donovan Landscape | Donovan Landscape | — | (951) 823 3134 | Windows, patio, painters | Redlands · San Bernardino County | — | — |
| Dons Electric Co | Ashton William Blackwell | — | (909) 246 2171 | Electricians | Alta Loma · San Bernardino County | — | — |
| Door Maxx INC | Adam Gonzalez | — | (559) 736 6017 | Other | Bloomington · San Bernardino County | — | — |
| Dorado Construction Co | Serrato Adrian | — | (909) 239 2880 | GC, remodel, ADU | Fontana · San Bernardino County | — | — |
| Dorian Complete Construction | Dorian Ioan Serban | — | (818) 425 3550 | GC, remodel, ADU | Needles · San Bernardino County | — | — |
| Dorough Family Builders LLC | Ryan Daniel Dorough | — | (441) 400 2452 | GC, remodel, ADU | Twentynine Palms · San Bernardino County | — | — |
| Dorsel Voy Bromley | Dorsel Voy Bromley | — | (760) 247 3999 | Electricians | Apple Valley · San Bernardino County | — | — |
| Dos Amigos Construction INC | Oscar M Moscoso | — | (818) 447 6983 | GC, remodel, ADU | Rancho Cucamonga · San Bernardino County | — | — |
| Dos Lagos Construction | Cervantes Antonio | — | (626) 841 2377 | GC, remodel, ADU | Chino · San Bernardino County | — | — |
| Dot Millwork | Armen Khechadoorian | — | (818) 572 3106 | Other | Ontario · San Bernardino County | — | — |
| Double A Marble & Granite INC | Hector Guadalupe Arredondo Alvarado | — | (951) 833 5167 | Other | Montclair · San Bernardino County | — | — |
| Double A Roofing | Jose Angel Ramirez | — | (909) 994 1607 | Other roofers | Rialto · San Bernardino County | — | — |
| Double Vv Lath And Plaster | Double Vv Lath And Plaster | — | (909) 732 0246 | Other | San Bernardino · San Bernardino County | — | — |
| Doug Fik Drywall | Doug Fik Drywall | — | (909) 556 1546 | Other | Highland · San Bernardino County | — | — |
| Doug Rice Construction INC | Douglas Edward Rice | — | (909) 790 1534 | GC, remodel, ADU | Yucaipa · San Bernardino County | — | — |
| Doug Schmidt Pool Repair | Doug Schmidt Pool Repair | — | (714) 401 9025 | Pool | Yucca Valley · San Bernardino County | — | — |
| Doug Valko Window Service | Douglas Eugene Valko | — | (951) 551 3274 | Windows, patio, painters | San Bernardino · San Bernardino County | — | — |
| Doug's Home Repairs & Remodeling | Doug's Home Repairs & Remodeling | — | (909) 987 9836 | GC, remodel, ADU | Alta Loma · San Bernardino County | — | — |
| Douglas A Buckley | Douglas A Buckley | — | (760) 368 8240 | Electricians | Joshua Tree · San Bernardino County | — | — |
| Douglas Concrete | Douglas Concrete | — | (562) 254 0768 | Other | Upland · San Bernardino County | — | — |
| Douglas Forbes Construction | Douglas Jerome Forbes | — | (323) 972 0685 | GC, remodel, ADU | Victorville · San Bernardino County | — | — |
| Douglas Haynes General Contractor | Douglas Haynes General Contractor | — | (909) 578 1433 | GC, remodel, ADU | Rancho Cucamonga · San Bernardino County | — | — |
| Douglas L Chadwick | Douglas L Chadwick | — | (909) 374 8332 | GC, remodel, ADU | Alta Loma · San Bernardino County | — | — |