| Adam Frank Eigenberger | Adam Frank Eigenberger | — | (209) 483 8537 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Adam Heine Tile | Adam Heine Tile | — | (209) 462 6241 | Other | Stockton · San Joaquin County | — | — |
| Adam Scott Kessler | Adam Scott Kessler | — | (209) 518 2536 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Adam Scott Ragsdale | Adam Scott Ragsdale | — | (209) 633 6332 | HVAC | Escalon · San Joaquin County | — | — |
| Adamas Construction INC | Ulises Edgar Mora | hola@adamasconstruction.com | (408) 461 1052 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Adamo Construction LLC | Ryan Anthony Adamo | — | (818) 239 6771 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Adapt Plumbing | Adapt Plumbing | adaptplumbing21@yahoo.com | (209) 922 3706 | Other | Manteca · San Joaquin County | — | — |
| Adkins Construction | Ralph Dean Jr Adkins | adkinsconstructionohio@gmail.com | (209) 595 6682 | GC, remodel, ADU | Ripon · San Joaquin County | — | — |
| Adobe Construction | Sergio Antonio Martinez | info@adobeconstruction.com | (209) 993 7010 | GC, remodel, ADU | Acampo · San Joaquin County | — | — |
| Adonai Heating & Air Conditioning | Adonai Heating & Air Conditioning | — | (209) 898 6567 | HVAC | Stockton · San Joaquin County | — | — |
| Adrian's Painting | Adrian's Painting | — | (209) 598 3233 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Adrian's Plumbing Services | Carbajal Adrian | — | (209) 227 9731 | Other | Stockton · San Joaquin County | — | — |
| Advance Data Communications Incorporated | Perlita Michelle Ong Sudiacal Simoy | — | (209) 858 4442 | Other | Lathrop · San Joaquin County | — | — |
| Advanced Design Builders INC | Cynthia Joanne Edwards | — | (925) 625 3811 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Advanced Tech 209 INC | Hassem Mohammad Samara | — | (209) 888 4944 | HVAC | Stockton · San Joaquin County | — | — |
| Advancedgeo INC | Robert Dixon Loeffler | — | (800) 511 9300 | Other | Stockton · San Joaquin County | — | — |
| Advanta Clean Of Central Valley | Christopher Michael Craparo | — | (209) 830 1399 | Other | Tracy · San Joaquin County | — | — |
| Ae Tile | Ae Tile | — | (209) 361 1083 | Other | Stockton · San Joaquin County | — | — |
| Afcom Technologies INC | Frattaroli Rocco | — | (209) 918 1727 | Other | Lathrop · San Joaquin County | — | — |
| Affordable Fence Company LLC | Bill Ray Williams | — | (209) 948 4415 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Affordable Heating & Air INC | Joseph Venanzio Bertolucci | — | (916) 922 2775 | HVAC | Lodi · San Joaquin County | — | — |
| Affordable Luxury Homes | Tony Joseph Sr Zeiter | — | (209) 481 8861 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Affordable Tree Company | Jeycon J Velasquez Martinez | — | (408) 704 0261 | Tree | Stockton · San Joaquin County | — | — |
| After-hours Painting Repairs | After-hours Painting Repairs | — | (209) 445 4142 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Ag Plumbing | Ag Plumbing | — | (209) 598 8980 | Other | Stockton · San Joaquin County | — | — |
| Agape Painter's | Agape Painter's | — | (925) 339 5795 | Windows, patio, painters | Tracy · San Joaquin County | — | — |
| Agr Concrete INC | Gutierrez Robles Abel | — | (209) 774 6285 | Other | Stockton · San Joaquin County | — | — |
| Aguilar Brothers INC | Luis Alfredo Aguilar | — | (408) 648 6393 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Aguilar Salazar Workspace Solutions | Aguilar Salazar Workspace Solutions | — | (209) 298 5582 | Other | Stockton · San Joaquin County | — | — |
| Aguileras New Age Construction | Jose Miguel Aguilera | — | (209) 898 5695 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Agustin Builders INC | Juan Agustin Contreras Saldate | — | (209) 271 3005 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Ahl Around Pool Service | Jeffery Allen Ahl | — | (209) 663 5435 | Pool | Lodi · San Joaquin County | — | — |
| Ai Homebuilder | Ai Homebuilder | — | (916) 599 6524 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Air Bros Mechanical LLC | Samuel Ibarra Jr Barajas | — | (209) 277 1877 | HVAC | Stockton · San Joaquin County | — | — |
| Air Care Pro | Air Care Pro | — | (209) 561 6089 | HVAC | Stockton · San Joaquin County | — | — |
| Air Care Solutions INC | Oscar Fernando Rodriguez | — | (209) 996 3286 | HVAC | Stockton · San Joaquin County | — | — |
| Air Dynamics Heating And Cooling Services | Kyle Anthony Silveira | — | (209) 914 8654 | HVAC | Tracy · San Joaquin County | — | — |
| Air King INC | Solomon S Ajlouni | info@air-king.com | (209) 933 1903 | HVAC | Stockton · San Joaquin County | — | — |
| Air Plus Mechanical | Air Plus Mechanical | info@airplusmechanical.com | (209) 610 8528 | HVAC | Stockton · San Joaquin County | — | — |
| Air Pro Comfort Systems INC | Robert Raymond Ii Batch | — | (209) 200 7861 | HVAC | Lodi · San Joaquin County | — | — |