| Bdm Construction | Bradley Darrell Miller | — | (530) 913 5331 | GC, remodel, ADU | Penn Valley · Nevada County | — | — |
| Beale Construction | Bruce David Beale | — | (530) 990 6513 | GC, remodel, ADU | Penn Valley · Nevada County | — | — |
| Beam Easy Living Center | Julia Elizabeth Medlyn | — | (530) 273 5166 | Electricians | Grass Valley · Nevada County | — | — |
| Beam Security Systems INC | Brian David O'brien | — | (530) 273 5166 | Electricians | Grass Valley · Nevada County | — | — |
| Bear Busters | Ryan Eugene Welch | — | (530) 592 9844 | Other | Truckee · Nevada County | — | — |
| Bear Hands Construction | Casey Lee Chapman | info@bearhandsconstruction.com | (503) 949-6804 | GC, remodel, ADU | Penn Valley · Nevada County | — | — |
| Beaver Construction | Herrera Francisco | — | (775) 688 9053 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Beck Construction | David Christain Beck | — | (530) 412 4141 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Bedrock Marble And Granite | Bedrock Marble And Granite | — | (530) 263 2367 | Other | Grass Valley · Nevada County | — | — |
| Behr Masonry | Michael Henry Behr | — | (530) 273 0443 | Other | Cedar Ridge · Nevada County | — | — |
| Belardi Construction | Robert Joseph Belardi | — | (530) 545 9466 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Ben Maselli Electric | Benjamin James Maselli | — | (707) 364 5917 | Electricians | Grass Valley · Nevada County | — | — |
| Ben Murphy | Ben Murphy | — | (530) 913 0660 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Ben Shepard Construction INC | Benjamin Joseph Shepard | — | (530) 559 5776 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Bender Construction | Cameron Luis Bender | — | (530) 277 2986 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Bender Construction | Jeffrey Caldwell Bender | — | (530) 582 5578 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Bennett Construction | Edward Duane Bennett | info@bennettconstruction.de | (530) 913 2107 | GC, remodel, ADU | Penn Valley · Nevada County | — | — |
| Benty's Landscaping INC | Cameron James Benty | — | (530) 536 6628 | Windows, patio, painters | Truckee · Nevada County | — | — |
| Bert Mc Whinney Plumbing | Bert Mc Whinney Plumbing | — | (530) 913 9457 | Other | Penn Valley · Nevada County | — | — |
| Bertoli Construction | Justin Matthew Bertoli | justin@bertoliconstruction.com | (530) 414 1261 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Best Sandblasting Service | Richard Wayne Hinman | — | (530) 265 3862 | Other | Nevada City · Nevada County | — | — |
| Betmar Construction | Betsy Ann Lindsay | — | (530) 583 9363 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Better Roofing | Jose Isabel Sr Mejorado Paniagua | info@betterroofingca.com | (530) 386 2352 | Other roofers | Truckee · Nevada County | — | — |
| Bh Construction | Bryan Richard Hlista | — | (530) 414 0630 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Bhb Remodeling | Cortes Urbano Barajas | — | (530) 386 1807 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Big Sky Electric | Brandon Gene Smith | — | (530) 648 4248 | Electricians | Grass Valley · Nevada County | — | — |
| Big Sky Painting And Staining | Big Sky Painting And Staining | — | (775) 846 4636 | Windows, patio, painters | Truckee · Nevada County | — | — |
| Bill Owens Custom Homes | Bill Owens Custom Homes | — | (530) 913 4524 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Bill Philpot | Bill Philpot | — | (530) 559 5893 | Other | Grass Valley · Nevada County | — | — |
| Bk's Well Pump & Trenching Service INC | Brandon William King | — | (530) 277 5995 | Other | Grass Valley · Nevada County | — | — |
| Black Bart Industries INC | Casey Phillips Smith | — | (530) 265 4816 | Other | Nevada City · Nevada County | — | — |
| Black Bear Trees | Black Bear Trees | — | (530) 401 2810 | Tree | Grass Valley · Nevada County | — | — |
| Black Diamond Builders | Black Diamond Builders | — | (530) 575 7765 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Black Diamond Diversified | Black Diamond Diversified | — | (530) 470 0990 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Blacksmith Peak Construction | Benjamin Edward Bergeron | — | (530) 414 3162 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Blackwell Construction | Anthony William Blackwell | — | (502) 526 3088 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Blake Larsen General Contracting | Blake Andrew Larsen | — | (530) 913 6175 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Block&tackle Landscaping | Jack Samuel Singleton | — | (530) 648 0585 | Windows, patio, painters | Nevada City · Nevada County | — | — |
| Blue Lake Av LLC | Jeffrey Lee Razink | jeff@bluelakeav.com | (310) 617 0368 | Other | Truckee · Nevada County | — | — |
| Blue Rock Enterprise LLC | Aaron Virgil Walker | — | (530) 274 2644 | Other | Rough And Ready · Nevada County | — | — |