| Degryse Electric Incorporated | Aaron Joseph Degryse | — | (925) 523 3060 | Electricians | Pleasanton · Alameda County | — | — |
| Deharo Construction INC | Dustin Matthew Prusso | — | (925) 606 8634 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Deigert Engineering & Construction | Michael James Deigert | — | (510) 376 1483 | Other | Castro Valley · Alameda County | — | — |
| Deistic Developers | Deistic Developers | info@deisticdevelopers.com | (408) 909 2007 | GC, remodel, ADU | Dublin · Alameda County | — | — |
| Dejan Radivojevic | Dejan Radivojevic | — | (562) 330 9595 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Dekay Demolition And Clearing INC | Joy Elizabeth Austin | — | (510) 430 2668 | Other | Oakland · Alameda County | — | — |
| Del Conte's Landscaping INC | Thomas Anthony Del Conte | — | (510) 353 6030 | Windows, patio, painters | Fremont · Alameda County | — | — |
| Del Conte's M&h Landscape Construction INC | Gonzalez Ricardo Magana | — | (510) 363 4013 | Windows, patio, painters | Fremont · Alameda County | — | — |
| Del Monte Electric Co INC | Scott Louis Mullins | — | (925) 829 6000 | Electricians | Dublin · Alameda County | — | — |
| Del Secco Diamond Core & Saw INC | David John Del Secco | — | (510) 475 6313 | Other | Hayward · Alameda County | — | — |
| Delcon Heating And Air Conditioning | Gregory Dean Jr Huntsman | — | (925) 456 8880 | HVAC | Livermore · Alameda County | — | — |
| Deleon Concrete Construction INC | Leon Alonso | — | (510) 391 1731 | Other | Newark · Alameda County | — | — |
| Delgado Construction | Juan Carlos Sr Delgado | — | (408) 476 5892 | GC, remodel, ADU | Newark · Alameda County | — | — |
| Delgado's Construction | Pelayo Delgado Santiago | — | (510) 798 0590 | GC, remodel, ADU | San Lorenzo · Alameda County | — | — |
| Delta Electric & Construction Services INC | Emad Najeeb | — | (209) 596 3789 | Electricians | Fremont · Alameda County | — | — |
| Deluxe Telephone Service INC | Justin Lee Avalos | — | (510) 276 9442 | Other | San Leandro · Alameda County | — | — |
| Demiguel Plumbing | Demiguel Plumbing | — | (510) 604 1078 | Other | Castro Valley · Alameda County | — | — |
| Demolition Management Group | Andres Arce Robio | — | (310) 715 0061 | Other | Oakland · Alameda County | — | — |
| Den Van Nguyen | Den Van Nguyen | — | (510) 774 6375 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Deng Construction | Deng Li Ping | — | (408) 268 7653 | HVAC | San Lorenzo · Alameda County | — | — |
| Denis Ogresevic | Denis Ogresevic | — | (510) 586 6551 | GC, remodel, ADU | Dublin · Alameda County | — | — |
| Dennehy Construction | Sean Francis Dennehy | — | (510) 915 6658 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Dennis Carty Painting | Dennis Carty Painting | — | (510) 912 0993 | Windows, patio, painters | Berkeley · Alameda County | — | — |
| Dennis G Pagones | Dennis G Pagones | — | (510) 418 6301 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Dennis J Marlett | Dennis J Marlett | — | (925) 399 6939 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Dennis James English | Dennis James English | — | (510) 435 6222 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Dennis Scott Enjaian | Dennis Scott Enjaian | — | (510) 299 9647 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Dennis Staats | Dennis Staats | — | (415) 726 4347 | Other | San Leandro · Alameda County | — | — |
| Denver Sermeno Builders INC | Jesus Alberto Lightbourn | — | (510) 837 4018 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Depth Concrete INC | Seanery Sr Donaville | — | (510) 543 3007 | Other | Oakland · Alameda County | — | — |
| Derek Mc Brearty Plumbing | Derek Mc Brearty Plumbing | — | (415) 377 3841 | Other | Oakland · Alameda County | — | — |
| Derek Rusch Building | Derek Rusch Building | — | (707) 328 5007 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Derrick Tracey Custom Tile & Marble | Derrick Benjamin Tracey | — | (925) 784 4407 | Other | Livermore · Alameda County | — | — |
| Design & Building Systems LLC | Martin Joel Bloom | — | (510) 207 7446 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Design Build Systems | Design Build Systems | messages@rapidsetbuildings.com | (408) 224 7500 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Design Draw Build INC | Tyler Gleeson Kobick | info@designdrawbuild.com | (510) 833 2643 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Design Electric | Peter Michael Nowak | — | (925) 846 0650 | Electricians | Pleasanton · Alameda County | — | — |
| Design In Mind ( D I M ) Construction | Mohana Najib Ahmad | — | (510) 882 4227 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Design Workshops | Yoel Asulin | info@design-workshops.com | (510) 434 0727 | Other | Oakland · Alameda County | — | — |
| Designer Tile Concepts | Hector Quinonez | — | (650) 703 2492 | Other | Hayward · Alameda County | — | — |