| Dream Team Electric INC | Carlos Jose Hernandez Diaz | — | (415) 910 6578 | Electricians | Richmond · Contra Costa County | — | — |
| Dreamscape Living INC | Mohmmadarif Hasimbhai Chauhan | info@dreamscape-living.com | (415) 368 9898 | Windows, patio, painters | Oakley · Contra Costa County | — | — |
| Drew Daniel Construction INC | Drew Joseph Daniel | — | (925) 876 9134 | GC, remodel, ADU | Lafayette · Contra Costa County | — | — |
| Drh Construction | Douglas Ronald Harriss | daveh@drhconstruction.com | (925) 457 9155 | GC, remodel, ADU | Discovery Bay · Contra Costa County | — | — |
| Drill Tech - Obayashi Joint Venture | Corporation Obayashi | — | (925) 978 2060 | Other | Antioch · Contra Costa County | — | — |
| Drill Tech Drilling & Shoring INC | Shannon Ray Creson | — | (925) 978 2060 | Other | Antioch · Contra Costa County | — | — |
| Drv Remodeling & Construction | Vito Hildeberto Diaz Tabora | — | (510) 254 1474 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Dry Fast Floors | Dry Fast Floors | — | (650) 921 6405 | Other | Concord · Contra Costa County | — | — |
| Drysdale Douglas INC | Leland Aaron Drysdale | — | (925) 915 2939 | Electricians | San Ramon · Contra Costa County | — | — |
| Drywall Solutions INC | Mark Anthony Nelson | — | (925) 980 4536 | Other | Concord · Contra Costa County | — | — |
| Ds Power | Joshua Lee Aldrich | — | (925) 350 4121 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| Dsd Builders INC | David Steven Dixon | — | (925) 565 9286 | GC, remodel, ADU | Oakley · Contra Costa County | — | — |
| Dsignart | Sayed Farhad Aslami | — | (925) 933 9677 | Other | Antioch · Contra Costa County | — | — |
| Duarte Construction | Daniel Andrew Duarte | info@duarteconstruction.com | (925) 383 2978 | GC, remodel, ADU | Oakley · Contra Costa County | — | — |
| Dublin Central Vacuums | Dublin Central Vacuums | — | (925) 828 3782 | Other | Brentwood · Contra Costa County | — | — |
| Duce Construction INC | Adam Merwan Duce | — | (925) 595 1020 | GC, remodel, ADU | Walnut Creek · Contra Costa County | — | — |
| Ducheney Construction INC | Roxanne Louise Ducheney | — | (925) 447 7400 | GC, remodel, ADU | Discovery Bay · Contra Costa County | — | — |
| Duct Care Services | Hasem Mohammad Samara | — | (415) 335 3597 | HVAC | Brentwood · Contra Costa County | — | — |
| Duglas Rodil Aguilar Lorensana | Duglas Rodil Aguilar Lorensana | — | (415) 720 3030 | Electricians | San Pablo · Contra Costa County | — | — |
| Dunlop Painting LLC | Jennifer Kathleen Hernandez | jimdunlop@dunloppainting.com | (925) 339 5860 | Windows, patio, painters | Oakley · Contra Costa County | — | — |
| Dura Art Stone Construction Co INC | Samuel Leon Diesendruck | — | (510) 325 3016 | GC, remodel, ADU | Danville · Contra Costa County | — | — |
| Duran Flooring INC | Ines Veronica Duran | — | (925) 915 2090 | Other | San Ramon · Contra Costa County | — | — |
| Duran Floors | Duran Floors | — | (925) 584 6172 | Other | Pittsburg · Contra Costa County | — | — |
| Duran Remodel INC | Michael Wayne Luther | — | (510) 776 0384 | GC, remodel, ADU | El Sobrante · Contra Costa County | — | — |
| Duran's Custom Painting & Decorating | Duran's Custom Painting & Decorating | — | (925) 759 6727 | Windows, patio, painters | Antioch · Contra Costa County | — | — |
| Duran's Tree And Shrub Care LLC | Melchor Manuel Duran | — | (510) 725 9826 | Other | Bay Point · Contra Costa County | — | — |
| Duston Dougherty Electric | Duston James Dougherty | — | (510) 224 1108 | Electricians | El Sobrante · Contra Costa County | — | — |
| Duval Construction INC | James Christopher Duval | — | (510) 527 7428 | GC, remodel, ADU | El Cerrito · Contra Costa County | — | — |
| Dvoskin Alon | Dvoskin Alon | — | (510) 224 0277 | Other | Walnut Creek · Contra Costa County | — | — |
| Dwellcare Construction | William David Rude | — | (925) 250 6522 | GC, remodel, ADU | Pittsburg · Contra Costa County | — | — |
| Dwh Creative Contracting INC | Donald William Howell | — | (510) 255 6555 | GC, remodel, ADU | Richmond · Contra Costa County | — | — |
| Dx Cooling & Heating INC | Andrew James Varves | — | (925) 799 2151 | HVAC | Pittsburg · Contra Costa County | — | — |
| Dyna Electric | Dante Nicholas Westbrook | — | (415) 530 7771 | Electricians | Oakley · Contra Costa County | — | — |
| Dynamic Building Solutions | Dynamic Building Solutions | — | (925) 440 6657 | GC, remodel, ADU | Martinez · Contra Costa County | — | — |
| Dynamic Building Systems INC | Eugene Alan Brager | — | (925) 254 3454 | Other | Orinda · Contra Costa County | — | — |
| Dynamic Communications | Dynamic Communications | — | (925) 753 0393 | Other | Antioch · Contra Costa County | — | — |
| Dynamic Roofing INC | Bahena Velasquez Alfonso | — | (925) 755 8482 | Other roofers | Antioch · Contra Costa County | — | — |
| Dynamic Tile | Dynamic Tile | — | (925) 207 8948 | Other | Antioch · Contra Costa County | — | — |
| Dynamicz Construction INC | Jevon Chan | — | (510) 315 3806 | GC, remodel, ADU | Pittsburg · Contra Costa County | — | — |
| Dynamo Construction | William Jennings Knudson | — | (925) 899 7663 | Other | Moraga · Contra Costa County | — | — |