| Alvillar Construction And Tile | John Edward Alvillar | — | (209) 483 5696 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Am & Sons Engineering | Abel Medrano | admin@amsonsengineering.com | (209) 471 1490 | Other | Stockton · San Joaquin County | — | — |
| Am Plumbing | Am Plumbing | — | (209) 817 3111 | Other | Stockton · San Joaquin County | — | — |
| Am Tile INC | Mosqueda Armando | — | (209) 483 0098 | Other | Stockton · San Joaquin County | — | — |
| Amador's Landscape Co | R Jose Luis Amador | — | (510) 755 1512 | Windows, patio, painters | Tracy · San Joaquin County | — | — |
| Amazon Construction | Mohabat Sohayle | — | (925) 393 3042 | GC, remodel, ADU | Lathrop · San Joaquin County | — | — |
| Ambika Construction Company INC | Posadas Miguel Dejesus | — | (209) 688 1697 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Amcan Remodeling | Amcan Remodeling | — | (209) 327 3286 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| America First Construction INC | Jerry Allen Matthews | — | (209) 481 8374 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| America's Tub & Tile Refinishing | America's Tub & Tile Refinishing | — | (925) 207 2232 | Other | Stockton · San Joaquin County | — | — |
| American Air INC | Michael Lee George | — | (209) 464 1310 | HVAC | French Camp · San Joaquin County | — | — |
| American Attics | John David Sallas | — | (619) 713 3777 | Other | Tracy · San Joaquin County | — | — |
| American Bathtub Refinishing | Ernesto Medina | — | (209) 509 4684 | Windows, patio, painters | Lodi · San Joaquin County | — | — |
| American Crane Rental INC | Edwin Keith Powell | — | (209) 838 8815 | Other | Escalon · San Joaquin County | — | — |
| American Engineering Contractors INC DBA Budget Electric | Brenda Ann Schmalz | — | (209) 832 2388 | Electricians | Tracy · San Joaquin County | — | — |
| American Kitchen And Bath | Wesley Jay Ambrose | interested@domainmarket.com | (916) 719 7447 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| American Modular Systems INC | David Daniel Sarich | — | (209) 825 1921 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| American Plumbing | American Plumbing | — | (209) 688 3661 | Other | Lockeford · San Joaquin County | — | — |
| American Power & Communications | Dustin Aaron Wortham | — | (209) 833 1369 | Electricians | Tracy · San Joaquin County | — | — |
| American Remodels INC | Steven Lawrence Cockrum | — | (209) 329 9816 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| American Smart Living DBA American Smart Living Construction | Ashraf Mohammad Raoufi | — | (925) 268 8225 | Other roofers | Manteca · San Joaquin County | — | — |
| American Sports Construction INC DBA Asc Turf | Joshua Dale Sarratt | — | (209) 923 4952 | Other | Ripon · San Joaquin County | — | — |
| Americans Plumbing INC | Alan Evan Jacques | hello@americansplumbing.com | (916) 990 4996 | Other | Tracy · San Joaquin County | — | — |
| Amg Lath & Plaster INC | Mendez Guillen Abundio | — | (209) 817 5487 | Other | Stockton · San Joaquin County | — | — |
| Amigos Painting | Amigos Painting | — | (650) 722 0132 | Windows, patio, painters | Manteca · San Joaquin County | — | — |
| Amonett Construction Company | Jonathan Leo Amonett | — | (408) 601 9208 | Electricians | Tracy · San Joaquin County | — | — |
| Amore Quality Painters INC | Lopez Antonio Moreno | — | (408) 348 1100 | Windows, patio, painters | Manteca · San Joaquin County | — | — |
| Amp Electric | Anthony Michael Prichard | — | (925) 339 6440 | Electricians | Tracy · San Joaquin County | — | — |
| Amp Range Electric | Mario Jr Fonseca Sanchez | — | (209) 687 4490 | Electricians | Stockton · San Joaquin County | — | — |
| Ampwrx | Michael David Favero | info@ampwrx.com | (866) 267 9791 | Electricians | Lodi · San Joaquin County | — | — |
| Amron Mechanical INC | Kamaljeet Singh Ghuman | — | (209) 740 0266 | HVAC | Manteca · San Joaquin County | — | — |
| Anaba Construction INC | Niloofar Broomand | — | (510) 826 9443 | Other | Manteca · San Joaquin County | — | — |
| Anaya Builders INC | Barajas Jose Luis Anaya | — | (925) 549 6769 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Anaya Construction | Rodrigo Valentin Anaya Barajas | — | (209) 740 0384 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Anaya Construction | Anaya Compean Abraham | — | (209) 740 0930 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Anaya Construction | Anaya Jess | — | (209) 605 4395 | GC, remodel, ADU | Ripon · San Joaquin County | — | — |
| Anaya Construction INC | Rafael Eligio Anaya | — | (209) 244 6429 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Anaya Electric | Andrew Jr Anaya | — | (209) 814 5253 | Electricians | Tracy · San Joaquin County | — | — |
| Anchor Point Builder | Anchor Point Builder | — | (415) 650 6502 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Anderson Construction | Tommy Owen Anderson | — | (510) 376 2707 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |