| Bill Evans Flooring | Bill Evans Flooring | — | (805) 471 1679 | Other | Nipomo · San Luis Obispo County | — | — |
| Bill Gaines Audio INC | Conor Michael Vache | — | (805) 545 8366 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Bill Kellogg General Contractor | Bill Kellogg General Contractor | — | (805) 441 7894 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Birchfield Construction | Christopher Shawn Birchfield | birchfieldconstruction@yahoo.com | (805) 704 1624 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Birks Construction | Tyler Shane Birks | — | (805) 712 4504 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Bishop Construction | Wyatt Clark Bishop | admin@bishopconstruction.com | (805) 748 4517 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Bison Builder | Bison Builder | — | (805) 704 4802 | GC, remodel, ADU | Grover Beach · San Luis Obispo County | — | — |
| Bison Energy Solutions | Everett John Riley | — | (805) 286 6786 | Electricians | Arroyo Grande · San Luis Obispo County | — | — |
| Bixler Builders | Bixler Builders | bixlerbuilders@gmail.com | (805) 704 0776 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Bixler Fire INC | Brock Steven Bixler | — | (805) 602 2960 | Other | Paso Robles · San Luis Obispo County | — | — |
| Bl Construction | Bradley Ryan Lord | — | (918) 834-8020 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Black Dog Construction & Installation INC | Warren Benjamin Barbao | — | (925) 321 4917 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Blackjack Power Swivels | Darren Eugene Mitchell | — | (805) 239 8686 | Other | Paso Robles · San Luis Obispo County | — | — |
| Blake's Tile | Blake's Tile | — | (408) 510 2595 | Other | Los Osos · San Luis Obispo County | — | — |
| Blanks Built | Blanks Built | — | (805) 423 6842 | GC, remodel, ADU | Templeton · San Luis Obispo County | — | — |
| Blazer Burton | Blazer Burton | — | (619) 917 7319 | Other | Morro Bay · San Luis Obispo County | — | — |
| Blitzkrieg Construction | Conar Alexander Hendry | — | (814) 712 9109 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Bloodworth Construction & Renovation INC | Charles Eugene Jr Bloodworth | — | (775) 560 4203 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Blue Diamond Landscapes INC | Edward Roman Wasniowski | — | (805) 395 1476 | Windows, patio, painters | Los Osos · San Luis Obispo County | — | — |
| Blue Skies Electric | Christopher William Majus | — | (805) 825 7512 | Electricians | Arroyo Grande · San Luis Obispo County | — | — |
| Blue Sky Billboards INC | Joy Amanda Sharp | info@lindmarkbillboards.com | (559) 832 1363 | Other | Arroyo Grande · San Luis Obispo County | — | — |
| Blueprint Energy Solutions INC | Culley Andrew Cook | — | (706) 614 8831 | Electricians | Grover Beach · San Luis Obispo County | — | — |
| Boardman Construction Management | Sarah Leanne Boardman | — | (805) 698 5538 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Bob Dillon Construction | Robert Earl Jr Dillon | — | (805) 466 9121 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Bob Fitzgerald Construction | Robert William Fitzgerald | — | (805) 226 9868 | GC, remodel, ADU | Templeton · San Luis Obispo County | — | — |
| Bob Hoover Const | Bob Hoover Const | — | (805) 748 1021 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Bob Keulen Construction | Bob Bryan Keulen | — | (805) 610 6252 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Bob Raymond's Flooring | Bob Raymond's Flooring | — | (805) 709 3551 | Other | Oceano · San Luis Obispo County | — | — |
| Bob Sprain's Draperies | Bob Sprain's Draperies | estimate@bobsprainsdraperies.com | (805) 227 4344 | Other | Paso Robles · San Luis Obispo County | — | — |
| Bobsin Construction INC | David Lloyd Bobsin | — | (805) 460 6958 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Boche Construction | Nicholas Eli Boche | — | (805) 235 7436 | GC, remodel, ADU | Creston · San Luis Obispo County | — | — |
| Bodie Howard Precision Construction | Bodie Alfred Howard | — | (805) 441 5079 | GC, remodel, ADU | Los Osos · San Luis Obispo County | — | — |
| Bogle Builders INC | Bryce Andrew Bogle | — | (805) 550 4101 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Bogle Construction INC | Scott Andrew Bogle | — | (805) 904 6126 | GC, remodel, ADU | Oceano · San Luis Obispo County | — | — |
| Bohawk Construction | Robert Augustine Botello | — | (559) 623 5124 | GC, remodel, ADU | Los Osos · San Luis Obispo County | — | — |
| Bohner Construction INC | Kevin Michael Bohner | — | (805) 550 2285 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Boller Enterprises | Kyle Ross Boller | — | (805) 801 5953 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Bolt Construction | Douglas A Bolt | — | (805) 461 1882 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Bolton Electric Co | Bolton Sherd | — | (805) 441 9900 | Electricians | Paso Robles · San Luis Obispo County | — | — |
| Bon Terra Landscapes INC | Johnny Robert Fort | info@bonterralandscapes.com | (415) 755 5624 | Windows, patio, painters | Cayucos · San Luis Obispo County | — | — |