| Bogner Pools | James Vincent Pizzifred | construction@bognerpools.com | (951) 688 5543 | Pool | Riverside · Riverside County | — | — |
| Bojorquez Plumbing | Bojorquez Plumbing | — | (760) 609 9930 | Other | Thermal · Riverside County | — | — |
| Bolano's Painting | Bolano's Painting | — | (951) 489 7094 | Windows, patio, painters | Moreno Valley · Riverside County | — | — |
| Bold Electric INC | Cheryl Lynn Daniels | — | (951) 340 3573 | Electricians | Corona · Riverside County | — | — |
| Bolder Electric LLC | Nick Dean Lawrence | support@bolderelectric.com | (949) 293 5113 | Electricians | Canyon Lake · Riverside County | — | — |
| Boleyn's G E C | Boleyn's G E C | — | (951) 776 0537 | Other | Riverside · Riverside County | — | — |
| Bolt Electric | Hernandez Angelo | — | (951) 833 4038 | Electricians | Perris · Riverside County | — | — |
| Bolt Up Electric | Alex Cruz Rodriguez | — | (714) 390 0959 | Electricians | Riverside · Riverside County | — | — |
| Bolton Air Conditioning And Heating | Bolton Air Conditioning And Heating | — | (909) 641 9641 | HVAC | Murrieta · Riverside County | — | — |
| Bolton Mechanical | Bolton Mechanical | — | (951) 756 5703 | HVAC | Moreno Valley · Riverside County | — | — |
| Bom Construction INC | Michael Yoosik Choi | — | (949) 735 2113 | HVAC | Riverside · Riverside County | — | — |
| Boming Air INC | Boming Li | service@bomingair.com | (657) 275 5855 | HVAC | Norco · Riverside County | — | — |
| Boming Li | Boming Li | — | (657) 275 5855 | HVAC | Norco · Riverside County | — | — |
| Bonanza Homes | Bonanza Homes | — | (951) 564 2980 | GC, remodel, ADU | Perris · Riverside County | — | — |
| Bondar Construction Company | Orion Erick Bondar | — | (951) 836 0536 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Bonded Rigging & Heavy Transport | Bonded Rigging & Heavy Transport | — | (760) 272 2793 | Other | Rancho Mirage · Riverside County | — | — |
| Bone Dry Restoration | Timothy Justin Goeler | — | (951) 750 2580 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| Borden Equipment INC | Mathew Brion Borden | — | (951) 545 1916 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Borden Excavating INC | Shaun Michael Borden | — | (909) 795 5410 | Other | Calimesa · Riverside County | — | — |
| Born Wired Electric | Jeremy Iver Nielsen | — | (951) 447 1650 | Electricians | Winchester · Riverside County | — | — |
| Borrego AC & Heating | Isaac Chuck Borrego | — | (760) 851 4767 | HVAC | Indio · Riverside County | — | — |
| Boss Renovations And Construction | Leonardo Fabio Martinez | — | (951) 704 3405 | GC, remodel, ADU | Winchester · Riverside County | — | — |
| Boss Renovations And Construction INC | Leonardo Fabio Martinez | — | (951) 704 3405 | GC, remodel, ADU | Winchester · Riverside County | — | — |
| Boswell Builds LLC | David Allan Boswell | — | (208) 821 8262 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Boswell Construction | Gary Davis Boswell | info@boswell.com | (951) 553 6028 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Bosworth Development | Bosworth Development | — | (760) 443 3633 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Botello Cabinetry INC | Paul Jr Botello | — | (951) 764 9508 | Other | Temecula · Riverside County | — | — |
| Boudreau Construction INC | Alan Joseph Boudreau | — | (951) 493 6780 | Other | Corona · Riverside County | — | — |
| Boudreau Pipeline Corporation | Alan Joseph Boudreau | — | (951) 493 6780 | Electricians | Corona · Riverside County | — | — |
| Boulder Earthwork INC | Osvaldo L Gonzalez | — | (949) 233 8284 | Other | Lake Elsinore · Riverside County | — | — |
| Boulder INC | Noel Gonzalez | — | (949) 254 9023 | Other | Lake Elsinore · Riverside County | — | — |
| Bouse Construction | Steve Murel Bouse | — | (951) 595 5746 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Bouskill Sales And Services INC DBA Pb Shower Doors | Patrick Allen Elliott | — | (951) 415 0733 | Windows, patio, painters | Corona · Riverside County | — | — |
| Bowbar Epoxy Designs INC | Isaac Joshua Clark | — | (951) 484 0809 | Other | Hemet · Riverside County | — | — |
| Bowers Construction | John William Bowers | — | (714) 883 5172 | GC, remodel, ADU | Norco · Riverside County | — | — |
| Bowers Construction INC | John William Bowers | — | (714) 883 5172 | GC, remodel, ADU | Norco · Riverside County | — | — |
| Bowlus Pacific Venture Corporation | Kirk David Bowlus | — | (951) 538 1974 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Bowman Painting INC | Richard Donald Bowman | info@bowman-painting.com | (619) 818 9510 | Windows, patio, painters | Menifee · Riverside County | — | — |
| Bowman's Roofing | Betty Jean Bowman | — | (951) 315 2348 | Other roofers | Riverside · Riverside County | — | — |
| Box Construction INC | Stephen Michael Box | — | (951) 336 0550 | GC, remodel, ADU | Murrieta · Riverside County | — | — |