| B&l Design Build | B&l Design Build | — | (214) 207 7556 | GC, remodel, ADU | Roseville · Placer County | — | — |
| B-line Sports LLC | David Phillip Brown | — | (530) 305 0377 | Other | Lincoln · Placer County | — | — |
| B-lux Flooring INC | Bohdan Tkach | — | (916) 677 7346 | Other | Lincoln · Placer County | — | — |
| B2b Building Incorporated | John Westley Sifford | — | (530) 391 8100 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Baaron Keith Roofing | Baaron Keith Surratt | — | (916) 580 7922 | Other roofers | Roseville · Placer County | — | — |
| Baker Air Repair | Baker Air Repair | — | (916) 521 1185 | HVAC | Newcastle · Placer County | — | — |
| Baker Landscape INC | Thomas Allen Baker | — | (916) 257 1009 | Windows, patio, painters | Rocklin · Placer County | — | — |
| Bakers Maintenance & Repair | Bakers Maintenance & Repair | — | (916) 320 6976 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Baldoni Construction Service INC A California Corporation | Thomas James Baldoni | — | (530) 885 5210 | Other | Newcastle · Placer County | — | — |
| Ballco Construction | Steven Andrew Ball | — | (916) 517 0944 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Bancroft Development INC | Tony Lawyer Christian | — | (916) 896 7059 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Banner Construction | Balint Banner | 63132bannerconstructionstl@gmail.com | (916) 305 4685 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Banta Engineering | Banta Engineering | — | (916) 663 1835 | Other | Penryn · Placer County | — | — |
| Bar None Construction | Shayne Gregory Cocotis | info@barnoneconstruction.com | (925) 963 7918 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Bar-one Const | Bar-one Const | — | (530) 308 5174 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Barbara Enterprises | David Richard Barbara | infobarbarainc@gmail.com | (530) 521 1376 | Electricians | Auburn · Placer County | — | — |
| Barco Flooring | Barco Flooring | — | (916) 434 0470 | Other | Lincoln · Placer County | — | — |
| Barker Industries | Jacob Paul Barker | — | (530) 802 1271 | Other | Colfax · Placer County | — | — |
| Barnard Development INC | Paul Gardner Barnard | — | (760) 908 3391 | GC, remodel, ADU | Carnelian Bay · Placer County | — | — |
| Barnum Mechanical INC | Thomas Andrew Barnum | — | (916) 652 7223 | Other | Loomis · Placer County | — | — |
| Barone Enterprises INC | Scott John Barone | — | (916) 439 4978 | Other | Rocklin · Placer County | — | — |
| Barracuda Watergardens & Supply | Barracuda Watergardens & Supply | — | (530) 823 8780 | Windows, patio, painters | Auburn · Placer County | — | — |
| Barrick Construction | Mathew Barrick Raby | — | (916) 878 0668 | GC, remodel, ADU | Granite Bay · Placer County | — | — |
| Barry Franks | Barry Franks | — | (808) 283 8618 | Other | Loomis · Placer County | — | — |
| Barter Construction | Quentin Guy Barter | — | (530) 583 7191 | GC, remodel, ADU | Tahoe City · Placer County | — | — |
| Bartley Properties | Bartley Properties | — | (916) 240 0071 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Basecamp Builders INC | Mark Andrew Warren | — | (530) 214 0908 | GC, remodel, ADU | Tahoe City · Placer County | — | — |
| Basile Management Practice | Basile Management Practice | — | (530) 308 2920 | Windows, patio, painters | Tahoe City · Placer County | — | — |
| Bast Construction & Developers | Michael Joseph Bast | — | (530) 906 9442 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Batstone Painting | Batstone Painting | — | (916) 761 1582 | Windows, patio, painters | Lincoln · Placer County | — | — |
| Baxter Construction | Jeffrey Don Baxter | — | (530) 906 3806 | GC, remodel, ADU | Foresthill · Placer County | — | — |
| Bayne Construction INC | Keith Edward Bayne | info@bayneconstruction.com | (916) 833 6644 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Baysmith Construction | Derrick Lamar Smith | derrick@baysmithconstruction.com | (510) 520 7440 | GC, remodel, ADU | Granite Bay · Placer County | — | — |
| Bbr Landscaping INC | Benjamin Bernhard Rosenau | — | (916) 662 2051 | Windows, patio, painters | Applegate · Placer County | — | — |
| Bcc Construction LLC | Bradley James Norgart | — | (916) 587 2806 | GC, remodel, ADU | Rocklin · Placer County | — | — |
| Bd Construction | Brad Allen Dessert | — | (916) 316 5278 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Bda INC | Brian David Arnold | — | (530) 263 6412 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Bdl Construction INC | Brian David Lee | — | (530) 581 2358 | GC, remodel, ADU | Tahoe City · Placer County | — | — |
| Bdm Electric | Mudron Martin | — | (916) 247 2989 | Electricians | Roseville · Placer County | — | — |
| Bear Creek Builders INC | Martin John Metz | — | (530) 550 9771 | GC, remodel, ADU | Tahoe City · Placer County | — | — |