| Dean Richardson Custom Painting | Dean Richardson Custom Painting | — | (619) 889 3626 | Windows, patio, painters | Ramona · San Diego County | — | — |
| Dean Sheet Metal Fabrication | Dean Sheet Metal Fabrication | — | (619) 244 1041 | Other | El Cajon · San Diego County | — | — |
| Dean's Renovations | Dean's Renovations | dwconstructionsd@gmail.com | (951) 491 5966 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Deane Construction | Philip James Deane | info@deane-construction.com | (337) 252-0545 | GC, remodel, ADU | Fallbrook · San Diego County | — | — |
| Decade Construction | Michael Jason Ehrengruber | — | (760) 685 3726 | GC, remodel, ADU | Vista · San Diego County | — | — |
| Decade Plumbing Specialties | Decade Plumbing Specialties | — | (760) 497 8754 | Other | Valley Center · San Diego County | — | — |
| Decamp Plumbing INC DBA Economy Plumbing Co | Tyler James De Camp | — | (760) 484 4233 | HVAC | Escondido · San Diego County | — | — |
| Decamp Pools INC | Peter Brennan De Camp | — | (760) 802 5696 | Pool | Encinitas · San Diego County | — | — |
| Decathlon Builders | Christen Peter Jensen | — | (858) 449 1277 | GC, remodel, ADU | El Cajon · San Diego County | — | — |
| Decinces Construction INC | Michelle Ann Decinces-Zuccaro | — | (818) 212 9406 | GC, remodel, ADU | Encinitas · San Diego County | — | — |
| Deck Coatings LLC | Ryan Scott Jimenez | — | (858) 715 1200 | Windows, patio, painters | San Diego · San Diego County | — | — |
| Deck Coatings Waterproofing Corp | Bakun Wieslaw | — | (760) 315 4195 | Windows, patio, painters | Ramona · San Diego County | — | — |
| Deck Doctor Power Washing | Deck Doctor Power Washing | deckdoctor@live.com | (619) 444 0041 | Other | La Mesa · San Diego County | — | — |
| Deck Kotings Unlimited Synthetic Coatings | Douglas Wayne Miner | — | (619) 843 8718 | Other | Campo · San Diego County | — | — |
| Deckamond Corp | Aval Siavash Fakhretaha | deckamond@gmail.com | (760) 505 5192 | GC, remodel, ADU | Vista · San Diego County | — | — |
| Declan Kidd DBA Pacific Beach Electric | Declan George Kidd | damiankidd3@gmail.com | (858) 483 9201 | Electricians | San Diego · San Diego County | — | — |
| Deco Development INC | Gricel Cedillo | ken@decodevelopment.com | (619) 572 6675 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Deco Painting | Deco Painting | — | (858) 740 0209 | Windows, patio, painters | San Diego · San Diego County | — | — |
| Deco Studio | Deco Studio | — | (619) 636 4373 | Windows, patio, painters | San Diego · San Diego County | — | — |
| Decorative Finishes By Phil | Decorative Finishes By Phil | — | (760) 889 1918 | Windows, patio, painters | Vista · San Diego County | — | — |
| Decorative Landscape Solutions | Decorative Landscape Solutions | — | (619) 798 0517 | Windows, patio, painters | Chula Vista · San Diego County | — | — |
| Decorative Mouldings | Decorative Mouldings | — | (858) 945 4286 | GC, remodel, ADU | Vista · San Diego County | — | — |
| Deep Blue Construction | Thomas Wayne Jeffrey | — | (619) 443 8726 | GC, remodel, ADU | Lakeside · San Diego County | — | — |
| Deep Blue Construction INC | Thomas Wayne Jeffrey | — | (619) 454 6838 | GC, remodel, ADU | Lakeside · San Diego County | — | — |
| Deep Blue Pool Services LLC | Carl Duane Dixon | — | (760) 522 1808 | Pool | Ramona · San Diego County | — | — |
| Deep Cleaning & Restoration INC | Fernando Apodaca Sr Munoz | dcrsandiego@gmail.com | (858) 525 1737 | GC, remodel, ADU | National City · San Diego County | — | — |
| Deep Rooted Designs Landscape | James Robert Fahy | — | (203) 448 9242 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Deepdry Remediation | Deepdry Remediation | — | (760) 300 8997 | Other | San Marcos · San Diego County | — | — |
| Deer Fence INC | Jesus Aron Vera | — | (619) 791 0785 | Other | San Diego · San Diego County | — | — |
| Deer Water Pumps And Supply | Steven Michael Parkhurst | — | (619) 816 0782 | Other | Campo · San Diego County | — | — |
| Deganair | Joshua Edward Degan | buildzoomsupport@blockrenovation.com | (619) 890 3807 | HVAC | El Cajon · San Diego County | — | — |
| Degmar | Joao Marcos De Godoy | — | (619) 250 6383 | Other | Chula Vista · San Diego County | — | — |
| Degree Heating And Air | Degree Heating And Air | juan@degree-air.com | (760) 315 7714 | HVAC | Ramona · San Diego County | — | — |
| Dejan Buzanin Electric | Buzanin Dejan | — | (760) 847 1893 | Electricians | San Marcos · San Diego County | — | — |
| Del Mar Builders | Michael Vincent Ham | — | (858) 401 2080 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Del Mar Building INC | Leo Lindley Fuller | — | (858) 481 8396 | GC, remodel, ADU | Del Mar · San Diego County | — | — |
| Del Mar Construction Company | Franco-salinas Sandra | guy@infinitydesignbuild.com | (760) 594 6934 | GC, remodel, ADU | Pauma Valley · San Diego County | — | — |
| Del Mar Electric | Christopher David Sr Steensma | — | (858) 922 9655 | Electricians | Solana Beach · San Diego County | — | — |
| Del Mar Environmental & Construction Services INC | Juan David Diez De Bonilla | — | (619) 638 3679 | GC, remodel, ADU | Chula Vista · San Diego County | — | — |
| Del Mar Floors | Del Mar Floors | — | (619) 504 6608 | Other | San Diego · San Diego County | — | — |