| Diamond Glass And Mirrors INC | Rithiya Kim | — | (805) 320 9807 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Diamond In The Rough Construction - Scv Pools | Kenneth Michael Pompeo | — | (661) 250 4900 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Diamond M Construction | Douglas Edward Morgan | — | (949) 412 7090 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Diatec Av | Diatec Av | diawebwizards@yahoo.com | (818) 331 9769 | Other | Thousand Oaks · Ventura County | — | — |
| Dick Frazier Maintenance And Supervision INC | Jason Manly Frazier | — | (805) 657 0804 | GC, remodel, ADU | Oak View · Ventura County | — | — |
| Dickinson Fine Home Building INC | James Edward Dickinson | — | (805) 492 6811 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Diego Hernandez Guzman | Diego Hernandez Guzman | — | (805) 754 8371 | Windows, patio, painters | Port Hueneme · Ventura County | — | — |
| Diggin Cali | Joseph Henry Johnston | diggincali@gmail.com | (424) 285 9272 | Other | Simi Valley · Ventura County | — | — |
| Digital Media Installations INC | Grey Vincent Long | — | (888) 754 2280 | Other | Simi Valley · Ventura County | — | — |
| Dirt Works Engineering INC | Brian Paul Staben | — | (805) 732 2922 | Other | Somis · Ventura County | — | — |
| Dirt Works Utility Services INC | Brian Paul Staben | — | (805) 987 3000 | Other | Somis · Ventura County | — | — |
| Discount Plumbing & Rooter Service | Jose Antonio Renteria | — | (805) 207 0191 | Other | Oxnard · Ventura County | — | — |
| Discount Shutters And Blinds | Discount Shutters And Blinds | — | (805) 526 3169 | Other | Simi Valley · Ventura County | — | — |
| Discount Window Tinting | Discount Window Tinting | discountwindowtinting@gmail.com | (805) 501 8284 | Other | Simi Valley · Ventura County | — | — |
| Diseno Art | Diseno Art | — | (818) 917 7566 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Dive In Pool Services | Dive In Pool Services | — | (805) 665-8275 | Pool | Ventura · Ventura County | — | — |
| Divine Builders & Contracting | Brian Matthew Briggs | — | (805) 798 2830 | GC, remodel, ADU | Ojai · Ventura County | — | — |
| Divine Refrigeration | Divine Refrigeration | — | (805) 512 5039 | HVAC | Oxnard · Ventura County | — | — |
| Dk Electrical Contractors INC | Gary Wayne Cowles | — | (805) 656 4541 | Electricians | Camarillo · Ventura County | — | — |
| Dl Construction | Dennis Bryan Ii Litman | — | (805) 501 4070 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Dlb Sheet Metal INC | Diego Alberto Leyvas Barajas | dlbsheetmetal@gmail.com | (818) 602 7952 | Other | Simi Valley · Ventura County | — | — |
| Dmn Concrete INC DBA C&n Decorative Concrete Creations | David Michael Neill | — | (805) 907 1017 | Other | Ventura · Ventura County | — | — |
| Dmr Building Company | Martinez Daniel | — | (805) 824 6230 | Other roofers | Oxnard · Ventura County | — | — |
| Do It Right Blinds | Vincent Erwin Kinsey | — | (805) 208 3197 | Other | Simi Valley · Ventura County | — | — |
| Dobson Paver Cleaning & Sealing | Dobson Paver Cleaning & Sealing | — | (805) 407 3394 | Other | Ventura · Ventura County | — | — |
| Doc's Construction | Duoc Thanh Nguyen | — | (830) 481 5319 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Dolphin Construction INC | Michael Rene Rutz | — | (805) 732 9213 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Dominick Petti | Dominick Petti | — | (805) 223 1821 | Electricians | Camarillo · Ventura County | — | — |
| Don Gill Floor Covering | Don Gill Floor Covering | — | (805) 302 6757 | Other | Somis · Ventura County | — | — |
| Don Gillispie | Don Gillispie | — | (805) 444 1264 | Other | Ventura · Ventura County | — | — |
| Don Javi's Tree Services INC | Javier Carrasco Madrigal | — | (805) 586 5281 | Tree | Oxnard · Ventura County | — | — |
| Don Keegan Construction | Donald Alva Keegan | — | (805) 216 7386 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Don Kesteleyn Flooring | Don Kesteleyn Flooring | — | (805) 377 3545 | Other | Camarillo · Ventura County | — | — |
| Don Spratt Landscape | Don Spratt Landscape | — | (805) 857 9806 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Don't Lose Sight Electric INC | Kobi B Vega Samano | — | (805) 824 1177 | Electricians | Oxnard · Ventura County | — | — |
| Donahue Construction | Christopher Knott Donahue | — | (805) 432 2215 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Donald N Bevington | Donald N Bevington | — | (805) 501 0234 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Donald Richard Hall | Donald Richard Hall | — | (805) 218 6152 | Windows, patio, painters | Ventura · Ventura County | — | — |
| Donatoni Construction Co | David Bently Donatoni | — | (310) 710 8925 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Dondanville Construction | Christopher Robert Dondanville | — | (805) 729 3016 | GC, remodel, ADU | Ventura · Ventura County | — | — |