| Buena Vista Concrete LLC | Robert Munoz | — | (562) 241 4738 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Buena Vista Pool And Landscape | Jose Alberto Becerra | — | (760) 275 3332 | Windows, patio, painters | Cathedral City · Riverside County | — | — |
| Buena Vista Pools And Spas INC | Christopher Paul Cicogna | — | (760) 835 0470 | Pool | Rancho Mirage · Riverside County | — | — |
| Buena Vista Shutters Factory | Buena Vista Shutters Factory | — | (760) 238 6645 | Other | Indio · Riverside County | — | — |
| Buendia Painting LLC | Brandi Ann Buendia | — | (951) 907 4975 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Bueno's Certified Welding | Bueno's Certified Welding | — | (951) 760 3756 | Other | Menifee · Riverside County | — | — |
| Bueno's Machinery INC | Fernando Bueno | — | (626) 806 2288 | Other | Jurupa Valley · Riverside County | — | — |
| Buenos Construction Company Corp | Gerardo Carranza Bueno | buenosconstruction@yahoo.com | (909) 855 0818 | GC, remodel, ADU | Beaumont · Riverside County | — | — |
| Buenrostro Brothers Painting | Diaz Alejandro Buenrostro | — | (714) 357 9403 | Windows, patio, painters | Corona · Riverside County | — | — |
| Bugarin Roofing & Waterproofing LLC | Gabriel Gonzalez | — | (408) 893 1209 | Other roofers | Murrieta · Riverside County | — | — |
| Buhler INC | Daniel Aaron Buhler | — | (805) 552 6242 | Electricians | Riverside · Riverside County | — | — |
| Bui General Contracting & Designs INC | Chuyen Manh Bui | — | (951) 375 6557 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Build All Design & Construction | Frank Earl Jr Wilfert | — | (949) 338 9130 | GC, remodel, ADU | Palm Springs · Riverside County | — | — |
| Build Green | Michael Ray Green | — | (760) 636 5701 | GC, remodel, ADU | Palm Desert · Riverside County | — | — |
| Build Horizons INC | Johnny Joel Garcia | us@buildhorizons.com | (951) 550 4408 | GC, remodel, ADU | Perris · Riverside County | — | — |
| Build It | John Anthony Russo | — | (213) 259 8447 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Build It Group | Timothy Allen Boyes | — | (951) 757 1551 | GC, remodel, ADU | Wildomar · Riverside County | — | — |
| Build It Up Ps INC | German Martinez | — | (760) 413 2256 | GC, remodel, ADU | Cathedral City · Riverside County | — | — |
| Build Right Solutions | Build Right Solutions | — | (760) 521 3506 | GC, remodel, ADU | Menifee · Riverside County | — | — |
| Build Royal INC | Damian Andrew Sr Cory | buildroyaly@gmail.com | (760) 613 2051 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Builder Sheet Metal | Builder Sheet Metal | — | (760) 774 4250 | Other | Bermuda Dunes · Riverside County | — | — |
| Builder's Innovation Group | Jordan Nathaniel Box | — | (714) 453 8688 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Builders - West General Contractors | Guy Franklin Saber | — | (714) 234 8112 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Builders 2007 | Arenas Yasmany Flores | — | (760) 984 8764 | GC, remodel, ADU | Indio · Riverside County | — | — |
| Builders Firm INC | Rosendo Alonso Mojica | info@buildersfirm.com | (818) 913 1307 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Builders Innovations Group | Cerda Jorge Ochoa | info@buildersinnovationsgroup.com | (951) 322 9129 | GC, remodel, ADU | Hemet · Riverside County | — | — |
| Builders On Action INC | Juarez Joel Paisano | — | (714) 650 6503 | GC, remodel, ADU | Hemet · Riverside County | — | — |
| Building And Maintenance Company | David Glenn Strasser | — | (951) 412 9637 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| Building Automation Technologies INC | Jared Levi Oakes | — | (951) 712 9433 | HVAC | Lake Elsinore · Riverside County | — | — |
| Building Improvements By Sotissimo | Alvaro R Soto | — | (909) 312 3686 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Building Projects General Contractor | Building Projects General Contractor | — | (760) 831 2622 | GC, remodel, ADU | Desert Hot Springs · Riverside County | — | — |
| Building Synergies INC | Lionel Valencia | — | (714) 492 3688 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Building Vision INC DBA Right Angle Fabricators | Harold Willis Krajian | — | (909) 381 3368 | Other | Norco · Riverside County | — | — |
| Buildmore Construction | Franco Laurencio | — | (760) 972 0728 | GC, remodel, ADU | Palm Desert · Riverside County | — | — |
| Buildright Construction | Gomez Manuel Sanchez | — | (951) 545 2740 | GC, remodel, ADU | Mira Loma · Riverside County | — | — |
| Buildrite LLC | Andrew Schroeder | — | (951) 413 4129 | GC, remodel, ADU | Menifee · Riverside County | — | — |
| Builds It Well | Stephen Allen Ludwig | — | (951) 316 4977 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Built By Blessings Konstruction | Built By Blessings Konstruction | — | (909) 801 9406 | GC, remodel, ADU | Calimesa · Riverside County | — | — |
| Built Right Patios | Kees Alexander De Groot | — | (951) 442 7025 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Built-rite Construction | Gary Robert Henderson | — | (951) 323 9169 | GC, remodel, ADU | Murrieta · Riverside County | — | — |