| David A Zocchi | David A Zocchi | — | (925) 719 0985 | Windows, patio, painters | Danville · Contra Costa County | — | — |
| David B Collins Builders INC | David Belknap Collins | — | (510) 381 2554 | GC, remodel, ADU | Richmond · Contra Costa County | — | — |
| David Baumgartner Construction | David Matthew Baumgartner | — | (925) 726 9250 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| David Brian Walker | David Brian Walker | — | (510) 918 4399 | GC, remodel, ADU | San Pablo · Contra Costa County | — | — |
| David Brothers Construction INC | Michael Khanno David | — | (510) 541 1643 | GC, remodel, ADU | Alamo · Contra Costa County | — | — |
| David C Fontan INC DBA Oak Mountain Cabinets | David Charles Fontan | — | (925) 933 4755 | GC, remodel, ADU | Walnut Creek · Contra Costa County | — | — |
| David Chamberlain Roofing | David Paul Chamberlain | — | (510) 774 4284 | Other roofers | El Sobrante · Contra Costa County | — | — |
| David Gonsalves Corporation | David William Gonsalves | — | (925) 989 9105 | GC, remodel, ADU | Lafayette · Contra Costa County | — | — |
| David Green Landscaping Unlimited | David Green Landscaping Unlimited | — | (925) 305 4186 | Windows, patio, painters | Concord · Contra Costa County | — | — |
| David Hoang Le | David Hoang Le | — | (925) 852 1306 | Electricians | Antioch · Contra Costa County | — | — |
| David J Asselin | David J Asselin | — | (925) 212 7266 | Electricians | Concord · Contra Costa County | — | — |
| David Kaler Construction | David Wayne Kaler | — | (925) 594 2479 | GC, remodel, ADU | San Ramon · Contra Costa County | — | — |
| David Langon Construction | David John Langon | — | (510) 368 3263 | GC, remodel, ADU | Alamo · Contra Costa County | — | — |
| David M Dickstein | David M Dickstein | — | (925) 687 9176 | GC, remodel, ADU | Lafayette · Contra Costa County | — | — |
| David M Jurgens Construction | David Miner Jurgens | — | (925) 383 5180 | GC, remodel, ADU | Pacheco · Contra Costa County | — | — |
| David Manlove DBA Indian Rock Landscapes | Indian Rock Landscapes | — | (510) 410 0083 | GC, remodel, ADU | Richmond · Contra Costa County | — | — |
| David Peterson Construction | David Ramsdell Peterson | — | (510) 384 5588 | GC, remodel, ADU | Kensington · Contra Costa County | — | — |
| David Pierson Contracting Company | David Ted Pierson | — | (707) 205 6822 | GC, remodel, ADU | Rodeo · Contra Costa County | — | — |
| David R Bruzzone Construction Co | David Russell Bruzzone | — | (925) 451 5735 | GC, remodel, ADU | Moraga · Contra Costa County | — | — |
| David Rainey | David Rainey | — | (650) 279 4836 | GC, remodel, ADU | Bethel Island · Contra Costa County | — | — |
| David Ramirez | David Ramirez | — | (415) 786 7616 | GC, remodel, ADU | Orinda · Contra Costa County | — | — |
| David S Lee | David S Lee | — | (925) 206 0227 | Electricians | Concord · Contra Costa County | — | — |
| David Steen General Construction INC | David Allen Steen | — | (925) 516 7292 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| David Stone | David Stone | — | (925) 905 1776 | Other | San Ramon · Contra Costa County | — | — |
| David Strain Construction INC | David Alan Strain | — | (510) 495 4722 | GC, remodel, ADU | Richmond · Contra Costa County | — | — |
| David T Seeno | David T Seeno | — | (925) 483 2589 | GC, remodel, ADU | Pleasant Hill · Contra Costa County | — | — |
| David Weise Landscaping LLC | David Osburn Weise | — | (925) 989 1625 | Windows, patio, painters | Walnut Creek · Contra Costa County | — | — |
| David Zurun Painting | David Zurun Painting | — | (510) 524 8928 | Windows, patio, painters | El Cerrito · Contra Costa County | — | — |
| David's Electric | David Gamaliel Santamaria Lopez | — | (415) 349 1607 | Electricians | Richmond · Contra Costa County | — | — |
| David's Painting | David's Painting | — | (415) 349 1607 | Windows, patio, painters | Richmond · Contra Costa County | — | — |
| Davidon Homes | Dennis Joseph Razzari | sales@davidonhomes.com | (925) 945 8000 | GC, remodel, ADU | Walnut Creek · Contra Costa County | — | — |
| Davidson Construction | Andy Lee Davidson | — | (916) 919 4746 | GC, remodel, ADU | San Ramon · Contra Costa County | — | — |
| Davidson Pools | Davidson Pools | — | (480) 530-5385 | Pool | Pleasant Hill · Contra Costa County | — | — |
| Davidson Tile | Davidson Tile | — | (925) 833 2566 | Other | San Ramon · Contra Costa County | — | — |
| Davila Painting | Davila Painting | — | (415) 377 3033 | Windows, patio, painters | Antioch · Contra Costa County | — | — |
| Davila Plumbing Company INC | Luis Christopher Davila | — | (408) 449 0030 | Other | Brentwood · Contra Costa County | — | — |
| Davis And Hanley Network Solutions INC | Yurii Daniel Hanley | — | (925) 202 9658 | Other | Moraga · Contra Costa County | — | — |
| Davis Home Pros | Daniel Garcia | — | (925) 946 9746 | GC, remodel, ADU | Walnut Creek · Contra Costa County | — | — |
| Dawson Electric | Jordan Joseph Nunez | info@dawsonelectric.com | (925) 723 3535 | Electricians | Concord · Contra Costa County | — | — |
| Day's Generator Service INC | Toni Darlene Day | — | (925) 382 9510 | Electricians | Brentwood · Contra Costa County | — | — |