| Daniel Mechanical Services | Chris L Daniel | — | (925) 890 6549 | HVAC | Livermore · Alameda County | — | — |
| Daniel Mendoza Jr | Daniel Mendoza Jr | — | (510) 599 3973 | Other | Dublin · Alameda County | — | — |
| Daniel's Heating & A/c | Daniel's Heating & A/c | — | (510) 692 5718 | HVAC | Oakland · Alameda County | — | — |
| Daniels Floor Refinishing | Daniels Floor Refinishing | — | (510) 493 0161 | Other | Fremont · Alameda County | — | — |
| Danny Li | Danny Li | — | (510) 316 5878 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Dansel Restoration INC | Vidales Daniel Arzate | help@danselrestoration.com | (408) 564 0152 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Darius Kraus Electric INC | Darius Terrence Kraus | — | (510) 847 6148 | Electricians | Oakland · Alameda County | — | — |
| Dark Horse Solutions INC | Aaron Mason Lewis | — | (510) 770 6273 | GC, remodel, ADU | San Lorenzo · Alameda County | — | — |
| Darkstar Construction | Walter Lewis Jr Wiggs | — | (510) 573 2451 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Darling Gardens | Darling Gardens | — | (805) 471 8227 | Windows, patio, painters | Alameda · Alameda County | — | — |
| Darren Dao | Darren Dao | — | (510) 390 5677 | Electricians | San Lorenzo · Alameda County | — | — |
| Darren Huang Construction | Darren Yanshan Huang | — | (415) 722 8273 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Daryl M Rush Builder | Daryl M Rush Builder | — | (510) 774 0533 | GC, remodel, ADU | Emeryville · Alameda County | — | — |
| Das Construction | Loren Lee Struss | — | (925) 998 9727 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Dasom Builder | Yong Ho Cho | — | (925) 895 1975 | Electricians | Dublin · Alameda County | — | — |
| Data Communications | Joseph De Guzman Gervacio | — | (510) 881 6296 | Other | Hayward · Alameda County | — | — |
| Data Sync Communication INC | Vontallio Leearnane Carter | — | (510) 507 0802 | Other | Berkeley · Alameda County | — | — |
| Dave's Interior Construction Specialist | David Christopher Mercurio | — | (510) 326 1190 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Daves Carpet Service | David Wayne Hinson | dave@davescarpetservice.com | (231) 881-7694 | Other | Livermore · Alameda County | — | — |
| Davey Tree Surgery Company | Kevin Brian Peters | — | (925) 443 1723 | Windows, patio, painters | Livermore · Alameda County | — | — |
| David Alexander INC | David Alexander Mitchell | — | (510) 409 2288 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| David Carroll Associates INC | David Porter Jr Carroll | — | (510) 235 1256 | Other | Berkeley · Alameda County | — | — |
| David Cuneo Construction | David Edward Cuneo | — | (510) 872 4495 | GC, remodel, ADU | San Lorenzo · Alameda County | — | — |
| David Dean Gibbs Builder | David Dean Gibbs Builder | — | (510) 882 5955 | Electricians | Castro Valley · Alameda County | — | — |
| David G Daskalos General Construction | David Glen Daskalos | — | (510) 798 3269 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| David G Kenton | David G Kenton | — | (510) 501 8569 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| David Gelles | David Gelles | — | (415) 602 0042 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| David Grubb Construction INC | David Ernest Grubb | dgc94705@gmail.com | (510) 334 1275 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| David Keith Nelson | David Keith Nelson | — | (925) 243 8750 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| David Kim | David Kim | — | (510) 774 5028 | HVAC | San Leandro · Alameda County | — | — |
| David Long Construction | Long David | — | (510) 239 9821 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| David Paul Gustafson | David Paul Gustafson | — | (510) 393 9854 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| David Shawn Taylor | David Shawn Taylor | — | (510) 552 1849 | Windows, patio, painters | Fremont · Alameda County | — | — |
| David Sparks Construction | David Patrick Sparks | — | (510) 812 1242 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| David Stoppel Roofing INC | David Anthony Stoppel | — | (510) 793 6723 | Other roofers | Fremont · Alameda County | — | — |
| David Tetlow Construction | David Zachary Tetlow | — | (510) 220 3066 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| David Underwood Construction | David Scott Underwood | — | (510) 220 5583 | Electricians | Oakland · Alameda County | — | — |
| David Washington Iii | David Washington Iii | — | (510) 355 6444 | Other | Oakland · Alameda County | — | — |
| David Zaidman Painting | David Zaidman Painting | — | (510) 685 2345 | Windows, patio, painters | Albany · Alameda County | — | — |
| David's Landscape | David's Landscape | contact@sansoxygen.com | (925) 337 3775 | Windows, patio, painters | Fremont · Alameda County | — | — |