| Best Air Conditioning & Heating INC | Julie Marie Johnson | — | (714) 937 1980 | HVAC | Orange · Orange County | — | — |
| Best Boring And Bursting INC | Jose Carlos Gutierrez | — | (714) 699 6781 | Other | Costa Mesa · Orange County | — | — |
| Best Budget Remodeling LLC | Farzad Khorshidian | — | (949) 545 4911 | GC, remodel, ADU | Laguna Hills · Orange County | — | — |
| Best Choice Construction LLC | Bret Christopher Choisser | — | (815) 793 8903 | GC, remodel, ADU | Laguna Niguel · Orange County | — | — |
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| Best Construction INC | Byron Jr Blanco | get-info@best-construction.com | (949) 874 3720 | GC, remodel, ADU | Laguna Woods · Orange County | — | — |
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| Best Electrical Services | Sheikhtaheri Iraj | — | (949) 522 1834 | Electricians | Rancho Santa Margarita · Orange County | — | — |
| Best Friend Plumbing & Rooter INC | Joe Enamorado Diaz | — | (714) 699 1300 | Other | Cypress · Orange County | — | — |
| Best Garage Door Repair And Service LLC | Christos Dimitrios Argyrakis | — | (949) 939 2469 | Other | Irvine · Orange County | — | — |
| Best Interiors INC | Dennis Lee Ayres | — | (714) 490 7999 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Best Landscape | Best Landscape | — | (626) 864 0763 | Windows, patio, painters | Santa Ana · Orange County | — | — |
| Best Management Construction INC | Mendez Julian | — | (949) 768 3882 | GC, remodel, ADU | Foothill Ranch · Orange County | — | — |
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| Best Patio And Fence LLC | Oscar Alberto Navarro Carrete | — | (714) 478 7996 | Other | Costa Mesa · Orange County | — | — |
| Best Pro Painting INC | Hasaj Lulzim | — | (714) 330 4040 | Windows, patio, painters | Huntington Beach · Orange County | — | — |
| Best Quality Carpet INC | Carlos Quintin Castillo Cedano | — | (714) 902 5229 | Other | Midway City · Orange County | — | — |
| Best Quality Heating & Air INC | Juan Ramon Villasenor | — | (562) 244 5620 | HVAC | Buena Park · Orange County | — | — |
| Best Renovation | Best Renovation | — | (714) 213 8282 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Best Rooter And Plumbing | Best Rooter And Plumbing | — | (562) 665 3641 | Other | Fullerton · Orange County | — | — |
| Best Tech Plumbing | Best Tech Plumbing | — | (714) 362 1311 | Other | Anaheim · Orange County | — | — |
| Best Techs Contracting Design Build Remodel INC | Penny Lee Scheurer | — | (714) 330 4500 | GC, remodel, ADU | Garden Grove · Orange County | — | — |
| Best Value Electric | John Henry Tarango | — | (626) 343 3985 | Electricians | Orange · Orange County | — | — |
| Best Windows And Doors Oc | Best Windows And Doors Oc | — | (714) 503-9857 | Windows, patio, painters | Anaheim · Orange County | — | — |
| Best Yet Construction | Babaiyan Mehdi | — | (949) 310 0691 | GC, remodel, ADU | Lake Forest · Orange County | — | — |
| Bestone Interlock | Alberto Perez Arvizu | info@bestoneinterlock.com | (949) 728 3010 | GC, remodel, ADU | Mission Viejo · Orange County | — | — |
| Bestway Builders | Campuzano Carlos Benitez | — | (714) 829 9200 | GC, remodel, ADU | La Habra · Orange County | — | — |
| Bethel Construction | Jae Soo Park | — | (949) 230 4268 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Bethel Top Construction INC | Jae Soo Park | — | (949) 230 4268 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Bethelyen Builders INC | Oliver Alexander Chase | — | (310) 919 6299 | GC, remodel, ADU | Santa Ana · Orange County | — | — |
| Bethlehem No Fault Services INC | Joan Ellen Russell | — | (714) 240 4568 | GC, remodel, ADU | Costa Mesa · Orange County | — | — |
| Betker Construction | Darrell Wayne Betker | — | (714) 876 7829 | GC, remodel, ADU | Yorba Linda · Orange County | — | — |
| Betko INC | Christina Marie Hehl | — | (714) 373 0200 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Better Call Mac Remodeling & Home Services | Luis Enrique Mcpherson | — | (424) 390 2050 | GC, remodel, ADU | Laguna Niguel · Orange County | — | — |
| Better Green Turf LLC | Bryan Eduardo Mora | — | (949) 774 8181 | Windows, patio, painters | Tustin · Orange County | — | — |
| Better Home Painting | Better Home Painting | — | (714) 623 0608 | Windows, patio, painters | Irvine · Orange County | — | — |
| Better Living Construction & Development | Mario Ramiro Ramirez | — | (714) 574 7451 | GC, remodel, ADU | Orange · Orange County | — | — |
| Better Place Construction INC | Jimmy Ji Min Kim | — | (858) 775 8125 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| Better Remodels | Donald Dustin Garcia | info@betterremodels.com | (714) 502 4644 | GC, remodel, ADU | Orange · Orange County | — | — |