| Davis / Marin INC | Robert Francis Davis | — | (209) 992 0924 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Davis Ag Tree Service | Jack James Davis | — | (209) 670 5278 | Other | Tracy · San Joaquin County | — | — |
| Davis Plumbing And Irrigation | Davis Plumbing And Irrigation | — | (209) 465 7321 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Davoud Golzar Fariba | Davoud Golzar Fariba | — | (209) 321 6330 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Db Tile | Db Tile | — | (209) 470 8453 | Other | Tracy · San Joaquin County | — | — |
| Db Window Covering | Db Window Covering | — | (209) 815 0452 | Other | Tracy · San Joaquin County | — | — |
| Dda Services INC DBA Dda Construction Clean Up Services | Pedro Daniel Aguilar Fernandez | — | (408) 482 5433 | Other | Stockton · San Joaquin County | — | — |
| Ddk Construction A Partnership | David Keith Hardman | — | (209) 596 6840 | GC, remodel, ADU | Ripon · San Joaquin County | — | — |
| De Cicco Painting & Decorating | De Cicco Painting & Decorating | — | (209) 271 1836 | Windows, patio, painters | Lodi · San Joaquin County | — | — |
| De Graff Development INC | Richard Floyd De Graff | info@degraffdevelopment.com | (209) 847 2563 | GC, remodel, ADU | Ripon · San Joaquin County | — | — |
| De La Cruz Lath And Plaster Company | La Cruz Rafael De | — | (209) 368 8658 | Other | Stockton · San Joaquin County | — | — |
| De La Torre Painting | De La Torre Painting | — | (510) 564 6094 | Windows, patio, painters | Tracy · San Joaquin County | — | — |
| Deck West INC | Jennifer Suzanne Krause | — | (209) 939 9700 | Other | Stockton · San Joaquin County | — | — |
| Defense Fire Protection INC | Steven Richard Nahm | — | (209) 229 1811 | Other | Tracy · San Joaquin County | — | — |
| Del Valle Builders INC | Juan David Peralta Sarmiento | — | (408) 601 9512 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Delatorre Traffic Control | Destin Nathaniel Delatorre | — | (209) 276 6200 | Other | Escalon · San Joaquin County | — | — |
| Delo Electric LLC | Steve Dominic De La Torre | — | (209) 368 1117 | Electricians | Lodi · San Joaquin County | — | — |
| Delta - Wye Electrical Co | Samuel Amaba Jimenez | — | (209) 969 0785 | Electricians | Stockton · San Joaquin County | — | — |
| Delta Air Controls | Delta Air Controls | impallari@gmail.com | (510) 714 5876 | HVAC | Tracy · San Joaquin County | — | — |
| Delta Bay Construction | Jose Emerenciano Azevedo | — | (209) 430 9995 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Delta Bay Construction INC | Jose Emerenciano Azevedo | — | (209) 430 9995 | Other roofers | Stockton · San Joaquin County | — | — |
| Delta Bay Electric | Brandon Richard Wagner | — | (209) 351 6624 | Electricians | Lodi · San Joaquin County | — | — |
| Delta Bluegrass Company | Edward Alfred Zuckerman | — | (209) 469 7979 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Delta Building Maintenance | Delta Building Maintenance | — | (209) 239 4464 | Other | Manteca · San Joaquin County | — | — |
| Delta Dock Decor INC | Joshua Lee Williams | — | (925) 392 0243 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Delta Electric | Tino George Karles | — | (209) 351 1787 | Electricians | Lodi · San Joaquin County | — | — |
| Delta Electric Co | George Joseph Iii Dunajski | — | (209) 481 0008 | Electricians | Linden · San Joaquin County | — | — |
| Delta Garage Doors | Reuben Glen Evans | — | (209) 327 3367 | Other | Lockeford · San Joaquin County | — | — |
| Delta Glass Co | Jennifer Dawn Sutherlin | info@delta-glass.com | (209) 466 5581 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Delta Gold Heating & Air INC | Mario Luis Navarrete | — | (209) 817 2101 | HVAC | Victor · San Joaquin County | — | — |
| Delta Greenscapes | Delta Greenscapes | — | (209) 298 5015 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Delta Heating And Air Conditioning | Delta Heating And Air Conditioning | — | (209) 910 1403 | HVAC | Stockton · San Joaquin County | — | — |
| Delta Lawn & Garden | Delta Lawn & Garden | — | (209) 641 7835 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Delta Pump INC | Austin James Loock | — | (209) 466 9625 | Other | Linden · San Joaquin County | — | — |
| Delta Sierra Electric | Tyler Alan Doig | — | (209) 636 8808 | Electricians | Stockton · San Joaquin County | — | — |
| Delta Sierra Mechanical | Delta Sierra Mechanical | — | (916) 872 5479 | HVAC | Stockton · San Joaquin County | — | — |
| Delta Specialties INC | Ora Eugene Watters | info.asia@delta-specialties.com | (209) 937 9650 | Windows, patio, painters | Lodi · San Joaquin County | — | — |
| Delta Valley Landscape INC | Quiroz Daniel Pedraza | — | (510) 493 8022 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Demar Prefabricated Equipment | Matthew Gregory Demar | — | (209) 623 9007 | Other | Ripon · San Joaquin County | — | — |
| Demo Hauling | Jorge Luis Coronado-Huerta | — | (415) 361 8925 | Other | Tracy · San Joaquin County | — | — |