| Avex Painting INC | Miguel Angel Cazares | — | (209) 271 3513 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Aviano Construction INC | Hector Omar Segura Vazquez | avianoconstruction@gmail.com | (510) 880 4188 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Avidwater LLC | Jonathan Edward Topham | — | (559) 486 1412 | Electricians | Vernalis · San Joaquin County | — | — |
| Avila Roofing | Juan Rey Jr Avila | — | (209) 636 4641 | Other roofers | Stockton · San Joaquin County | — | — |
| Avocado Bros INC | Rudy Zepeda | — | (209) 898 4485 | Other | Stockton · San Joaquin County | — | — |
| Avp Greenscape INC | Alexis Vigil Pina | — | (209) 640 8034 | Windows, patio, painters | Tracy · San Joaquin County | — | — |
| Awesome Concrete INC | Julio Cesar Laguardia | — | (209) 207 8954 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Ayala's Pro Painting | Ayala's Pro Painting | — | (209) 647 8475 | Windows, patio, painters | Manteca · San Joaquin County | — | — |
| Ayp Construction INC | Camilo Jr Andrade | — | (209) 774 8778 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Azores Construction | Jose Armando Silva | — | (510) 656 6634 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Azores Tile INC | Anibal Gabriel Da S Machado | — | (408) 509 3408 | Other | Manteca · San Joaquin County | — | — |
| Azteca A J Landscape INC | Jose Juan Ordinola Espinoza | — | (209) 663 9671 | Windows, patio, painters | Lodi · San Joaquin County | — | — |
| Aztlan Ornamental Iron Fab | Aztlan Ornamental Iron Fab | — | (209) 464 5313 | Other | Stockton · San Joaquin County | — | — |
| B & B Backflow Service | Gary Bradley Cruse | — | (209) 275 8729 | Other | Ripon · San Joaquin County | — | — |
| B & B Heating & Air Conditioning INC | Robert David Jr Queirolo | — | (209) 474 8100 | HVAC | Stockton · San Joaquin County | — | — |
| B & B Simon Construction INC | William Thomas Simon | — | (209) 640 2419 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| B & C Fence Services | Vega David | — | (209) 401 6084 | Other | Linden · San Joaquin County | — | — |
| B & D Concrete Construction | Brad Allan Frechette | b.dconcrete@yahoo.com | (209) 993 1387 | GC, remodel, ADU | Lockeford · San Joaquin County | — | — |
| B & H Electric INC | Timothy James Finch | — | (209) 334 6770 | Electricians | Lodi · San Joaquin County | — | — |
| B & L Neeley INC | Elaine Maslin Neeley | orders@blneeley.com | (209) 823 3571 | Other | Ripon · San Joaquin County | — | — |
| B & R Landscaping INC | Jorge Robles Beleche | — | (209) 824 4477 | Windows, patio, painters | Manteca · San Joaquin County | — | — |
| B C I General Contractors INC | Michael David Buller | — | (209) 835 1370 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| B C Lath & Plastering | Brigido Cano Verduzco | — | (209) 992 7279 | Other | Stockton · San Joaquin County | — | — |
| B Clear Pools | B Clear Pools | — | (209) 280 6867 | Pool | Lodi · San Joaquin County | — | — |
| B E Stenger Construction INC | Brian Edwin Stenger | — | (209) 482 6255 | Electricians | Tracy · San Joaquin County | — | — |
| B Gomez Construction | Gomez Braulio | — | (209) 609 7896 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| B L P Electric | Bradley Lawrence Petersen | — | (209) 642 2178 | Electricians | Tracy · San Joaquin County | — | — |
| B M W Development INC | Mark Orrin Webb | — | (209) 456 0190 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| B O S S Best Of Security Systems | Riyad George Shehadeh | — | (209) 482 1720 | Alarm and generators | Stockton · San Joaquin County | — | — |
| B R Right Plumbing & Drain Cleaning | Brennan Ap Jr Redd | — | (209) 622 8673 | Other | Stockton · San Joaquin County | — | — |
| B V K's Plumbing And Waterheaters | Rudy Omar Garcia | — | (510) 427 2904 | Other | Manteca · San Joaquin County | — | — |
| B&d Painting And Decorating | Santiago Gustavo Fuentes | gustavo@bdpaintingdecorating.com | (510) 361 8924 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| B-love Painting INC | Bryant David Love | — | (209) 369 3075 | Windows, patio, painters | Victor · San Joaquin County | — | — |
| Babs Concrete | Babs Concrete | — | (209) 599 9422 | Other | Ripon · San Joaquin County | — | — |
| Bachle Construction INC | James Albert Bachle | — | (209) 478 5598 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Backyard Builders | Backyard Builders | astigma@astigmatic.com | (209) 327 7288 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Backyard Haven Pool & Spa Services | Daniel Edward Barboza | — | (209) 456 6611 | Pool | Stockton · San Joaquin County | — | — |
| Baez Cabinets & Installations | Baez Cabinets & Installations | baezcabinets112024@gmail.com | (925) 962 7063 | Other | Stockton · San Joaquin County | — | — |
| Bagley Enterprises INC | Andrew James Bagley | sales@bagleyenterprises.com | (209) 367 4800 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Bahrenfuss Mark Painting And Decorating | Bahrenfuss Mark Painting And Decorating | — | (209) 992 1802 | Windows, patio, painters | Stockton · San Joaquin County | — | — |