| Best General Paint | Losoya Bernabe Garibay | — | (909) 217 0760 | Windows, patio, painters | Rancho Cucamonga · San Bernardino County | — | — |
| Best Home Builder California | Best Home Builder California | — | (909) 315 1166 | GC, remodel, ADU | Apple Valley · San Bernardino County | — | — |
| Best Line On Construction INC | Alberto Cardenas | — | (909) 539 3120 | GC, remodel, ADU | Colton · San Bernardino County | — | — |
| Best Of Best Painting Co | Chang Joanna | — | (909) 821 5275 | Electricians | Chino Hills · San Bernardino County | — | — |
| Best Painting | Best Painting | — | (951) 990 6576 | Windows, patio, painters | Ontario · San Bernardino County | — | — |
| Best Price Auto Glass | Best Price Auto Glass | — | (909) 888-1253 | Windows, patio, painters | San Bernardino · San Bernardino County | — | — |
| Best Quality Construction INC | Daryl Scott Beans | — | (909) 236 5401 | GC, remodel, ADU | Montclair · San Bernardino County | — | — |
| Best Replacement Windows And Remodeling | Best Replacement Windows And Remodeling | — | (909) 790 1659 | GC, remodel, ADU | Yucaipa · San Bernardino County | — | — |
| Best Rooter & Plumbing | Best Rooter & Plumbing | — | (909) 797 4026 | Other | Yucaipa · San Bernardino County | — | — |
| Best S G S INC DBA Crestline Glass | Christopher Russell Barnes | — | (909) 878 0707 | GC, remodel, ADU | Big Bear City · San Bernardino County | — | — |
| Best Windows And Doors | Christopher Russell Barnes | — | (909) 878 0707 | Other roofers | Big Bear City · San Bernardino County | — | — |
| Best Wood Chips | Best Wood Chips | — | (909) 257 6622 | Other | Colton · San Bernardino County | — | — |
| Bethel Contractors INC | Daniel Chong Yul Moon | — | (213) 792 1976 | GC, remodel, ADU | Chino Hills · San Bernardino County | — | — |
| Beto's Backflow Solutions | Beto's Backflow Solutions | — | (909) 518 7279 | Other | Fontana · San Bernardino County | — | — |
| Better Builders United LLC | Reynold Leobardo Leon | — | (909) 253 2200 | GC, remodel, ADU | Yucaipa · San Bernardino County | — | — |
| Better Energy Ideas INC | Caroline Virginia Bettis | — | (909) 981 6295 | Other | Upland · San Bernardino County | — | — |
| Better Flow Plumbing | Better Flow Plumbing | mymail@mailservice.com | (909) 200 6279 | Other | San Bernardino · San Bernardino County | — | — |
| Better Home Design | Chantal Triay | — | (310) 694 6487 | GC, remodel, ADU | Rancho Cucamonga · San Bernardino County | — | — |
| Better Roofing | Gilbert Patino Jr Villareal | — | (844) 788 4663 | Other roofers | Grand Terrace · San Bernardino County | — | — |
| Beyond Steel Fabrication LLC | Michael Antonio Manzo | — | (909) 389 0088 | Other | Mentone · San Bernardino County | — | — |
| Bg Interlocking Stone Pavers | Valenzuela Bemjamin Guillen | — | (714) 204 8824 | Other | Rialto · San Bernardino County | — | — |
| Bg Tile Solutions | Bg Tile Solutions | — | (909) 560 4008 | Other | Rancho Cucamonga · San Bernardino County | — | — |
| Bga Design & Construction LLC | Oscar Carlos Amaral | — | (909) 645 0290 | GC, remodel, ADU | Redlands · San Bernardino County | — | — |
| Bgw Building Products INC | Michael Yuan Lee | sales@bgwbp.com | (909) 789 1818 | GC, remodel, ADU | Ontario · San Bernardino County | — | — |
| Bh A/c & Mechanical | Bh A/c & Mechanical | — | (909) 248 8212 | HVAC | Chino · San Bernardino County | — | — |
| Big 2 Small Electric | Juan Pablo Gonzales | — | (323) 506 2189 | Electricians | Fontana · San Bernardino County | — | — |
| Big Air Heating And Air Conditioning | Sun Ming | — | (909) 276 2902 | HVAC | Upland · San Bernardino County | — | — |
| Big Bear Electric INC | Clarissa Adams | — | (909) 547 6363 | Electricians | Big Bear City · San Bernardino County | — | — |
| Big Bear Home Inspectors | Big Bear Home Inspectors | — | (909) 855-2241 | Inspectors | Big Bear · San Bernardino County | — | — |
| Big Bear Log Works INC | Christina Marie Marmolejo | — | (909) 585 2815 | GC, remodel, ADU | Sugarloaf · San Bernardino County | — | — |
| Big Bear Pools & Spas | Luis Alberto Cornejo | — | (909) 205 2592 | Pool | Patton · San Bernardino County | — | — |
| Big Bear Pro Painting | Big Bear Pro Painting | team@latofonts.com | (909) 915 7646 | Windows, patio, painters | Big Bear City · San Bernardino County | — | — |
| Big Bear Rain Gutter | Big Bear Rain Gutter | — | (909) 648 5906 | Other | Big Bear Lake · San Bernardino County | — | — |
| Big Bear Sheet Metal | Michael Thomas Marcotte | — | (909) 585 5567 | HVAC | Big Bear Lake · San Bernardino County | — | — |
| Big Block Construction Co INC | Steven Robert Harrison | — | (909) 980 1976 | GC, remodel, ADU | Alta Loma · San Bernardino County | — | — |
| Big Boys Co | Steven Christopher Saenz-staub | — | (760) 486 1703 | GC, remodel, ADU | Hesperia · San Bernardino County | — | — |
| Big Dog Construction Company | Urrutia Samuel | — | (951) 712 2416 | GC, remodel, ADU | Chino · San Bernardino County | — | — |
| Big Dog Construction INC | Grant Elliott Burr | — | (760) 800 3169 | GC, remodel, ADU | Oak Hills · San Bernardino County | — | — |
| Big Fish Electric INC | John Henry Berry | — | (714) 342 3219 | Electricians | Lake Arrowhead · San Bernardino County | — | — |
| Big Hands Construction Corp | Hilario| Carcia Hilario Garcia Garcia | — | (909) 725 0492 | GC, remodel, ADU | Cedar Glen · San Bernardino County | — | — |