| Bailey Electric INC | Ian Abijah Bailey | — | (707) 332 0736 | Electricians | Stockton · San Joaquin County | — | — |
| Baker Roofing Co | Jackie Lee Baker-Bernard | — | (209) 462 8179 | Other roofers | Stockton · San Joaquin County | — | — |
| Baker's Heating And Air Conditioning INC | Kevin William Gutierrez | — | (209) 334 5338 | HVAC | Lodi · San Joaquin County | — | — |
| Balber Plumbing INC | Joseph Richard Iii Balber | — | (209) 556 7086 | Other | Escalon · San Joaquin County | — | — |
| Ballin Builders | Ballin Builders | — | (209) 810 8369 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Ballmore Builders INC | Duglas Ballmore Mira Perez | — | (510) 294 8444 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Bamco Construction | Samuel Bruno Jr Zuniga | — | (925) 337 2133 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Banning Construction INC | Jordan Douglas Banning | — | (209) 807 5385 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Barber Construction | Tyrone Basea Barber | — | (209) 221 6623 | GC, remodel, ADU | Escalon · San Joaquin County | — | — |
| Barbosa Cabinets INC | Gregory Jon Armbruster | — | (209) 836 2501 | Other | Tracy · San Joaquin County | — | — |
| Barney Jordan Plumbing INC | John Wayne Jr Jordan | — | (209) 944 9155 | Other | Stockton · San Joaquin County | — | — |
| Barnhart Electric | Kevin Lawrence Barnhart | — | (209) 639 2743 | Electricians | Lodi · San Joaquin County | — | — |
| Barr Construction | Carlos Alberto Orozco Gutierrez | — | (408) 493 3058 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Barraza Family INC | Javier Torres Barraza | — | (209) 470 0589 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Barroso's Drywall | Barroso's Drywall | — | (916) 877 0126 | Other | Tracy · San Joaquin County | — | — |
| Barry Construction | Robert Leo Barry | — | (209) 825 3900 | HVAC | Manteca · San Joaquin County | — | — |
| Barry's Backhoe Service INC | Barry Dean Jr Yanke | — | (209) 229 1815 | Other | Tracy · San Joaquin County | — | — |
| Barsottis Fire Protection | Antonio Carlo Barsotti | — | (209) 640 1156 | Other | Lodi · San Joaquin County | — | — |
| Barth Roofing Company INC | William Scott Barth | info@barthroofing.com | (209) 833 9917 | Other roofers | Lathrop · San Joaquin County | — | — |
| Basra Heating & Air Conditioning INC | Rajinder Singh Basra | — | (209) 834 6188 | HVAC | Tracy · San Joaquin County | — | — |
| Bassett's Custom Tile | Bassett's Custom Tile | — | (209) 915 5667 | Other | Stockton · San Joaquin County | — | — |
| Bassi Build Group | Hardeep Singh Bassi | — | (209) 717 9462 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Bates Fencing INC | Keith Allen Bates | — | (209) 200 1015 | Other | Lodi · San Joaquin County | — | — |
| Bates Masonry | Bates Masonry | — | (209) 649 4030 | Other | Woodbridge · San Joaquin County | — | — |
| Bathroom Pros | Peter Michael Jr Kardum | — | (209) 229 7713 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Bautista Painting | Bautista Painting | — | (602) 552 6255 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Bautista Roofing | Bautista Bautista Franco | — | (209) 570 7012 | Other roofers | Stockton · San Joaquin County | — | — |
| Bay Area Marble Experts INC | Leonel De Jesus Castro-Palacios | — | (510) 825 0413 | Other | Tracy · San Joaquin County | — | — |
| Bay Central Builder Group / A Partnership | Harry Charlie Neakok | — | (907) 250 1277 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Bay City Drywall Construction | Kevin Danilo Cano | — | (510) 688 8853 | Other | Stockton · San Joaquin County | — | — |
| Bay Modular INC | Tracey Maurice Greenwell | concierge@baymodular.com | (209) 214 6845 | GC, remodel, ADU | Lathrop · San Joaquin County | — | — |
| Bay Valley Fire Protection Systems INC | Danny Wade Hendon | — | (209) 253 0086 | Other | Ripon · San Joaquin County | — | — |
| Bay Valley Sheetmetal INC | David Brian Calderon | — | (209) 836 3810 | HVAC | Stockton · San Joaquin County | — | — |
| Bay West Insulation INC | Dante Diego Jackson | baywestinsulation@gmail.com | (510) 330 3609 | Other | Lathrop · San Joaquin County | — | — |
| Baylor Services INC | Michael Robert Baty | — | (209) 464 7903 | Other | Lockeford · San Joaquin County | — | — |
| Bcl Plumbing | Bcl Plumbing | — | (209) 513 5257 | Other | Stockton · San Joaquin County | — | — |
| Bcm Service & Engineering INC | Robert Ray Mc Mahan | info@bcmserviceengineering.com | (209) 830 7033 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Beaver Builders INC | Trejo Braulio Maldonado | — | (650) 315 5760 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Beck Community Builders INC | Chad Mitchell Lill | — | (209) 957 0331 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Beck Homes INC | David Wayne Beck | — | (209) 472 7777 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |