| Burelle Const | Burelle Const | — | (805) 459 4840 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Burger Christopher Construction | Christopher Michael Burger | — | (805) 709 6684 | GC, remodel, ADU | Grover Beach · San Luis Obispo County | — | — |
| Burkard's Landscape INC | Robert Hans Burkard | — | (805) 473 4663 | Windows, patio, painters | Arroyo Grande · San Luis Obispo County | — | — |
| Burke Designs | Burke Designs | — | (805) 710 3646 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Bush's Building Company | Mark James Bush | — | (805) 215 7772 | GC, remodel, ADU | Grover Beach · San Luis Obispo County | — | — |
| Busy Bear Plumbing | Sky Lee Sepulveda | contact@busybearplumbing.com | (805) 835 7460 | Other | Paso Robles · San Luis Obispo County | — | — |
| Butch Pope Engineering INC | Harry Chapin Jr Pope | — | (805) 343 6897 | Other | Nipomo · San Luis Obispo County | — | — |
| Butler Builds Construction | Trevor Jason Butler | — | (805) 329 2460 | GC, remodel, ADU | Los Osos · San Luis Obispo County | — | — |
| By Design Tile & Stone | By Design Tile & Stone | — | (805) 550 0440 | Other | Atascadero · San Luis Obispo County | — | — |
| Byrne Framing | Byrne Framing | — | (805) 904 3275 | Other | Atascadero · San Luis Obispo County | — | — |
| C & C Tree Service | Channon Deone Clagg | — | (805) 434 0914 | Tree | Paso Robles · San Luis Obispo County | — | — |
| C & S Roofing | William Joseph Summerfield | — | (805) 489 8231 | Other roofers | Arroyo Grande · San Luis Obispo County | — | — |
| C & S Shower Door INC | Kelli Janea Stein | — | (805) 473 8489 | Windows, patio, painters | Grover Beach · San Luis Obispo County | — | — |
| C 3 Construction & Development | Charles Eugene Iii Johnson | — | (805) 441 3390 | GC, remodel, ADU | Templeton · San Luis Obispo County | — | — |
| C A L Coast Construction | Caleb Andrew Lopez | — | (805) 545 9675 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| C Beecham Corporation | Craig Thomas Beecham | — | (805) 459 0646 | Other | Los Osos · San Luis Obispo County | — | — |
| C C Contracting | Cecilia Caroline Ankerstrom | — | (805) 345 0157 | GC, remodel, ADU | Nipomo · San Luis Obispo County | — | — |
| C C Incorporated DBA Caliber Flooring | Christopher Patrick Jensen | — | (805) 356 5437 | Other | Nipomo · San Luis Obispo County | — | — |
| C Chubb | C Chubb | — | (805) 466 1993 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| C Cowan Construction | Christopher Michael Cowan | — | (805) 550 2765 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| C Dunn Construction INC | Casey Owen Dunn | cdunnconstruct@gmail.com | (805) 610 0985 | Other | Templeton · San Luis Obispo County | — | — |
| C Healy Construction LLC | Chad Hoit Healy | — | (805) 712 0412 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| C Hollister General Engineering INC | Christopher Daniel Hollister | — | (805) 835 6045 | Other | Paso Robles · San Luis Obispo County | — | — |
| C I A Custom Integrated Audio Video | Joshua Paul Lindner-Jacobs | — | (805) 680 0306 | Other | Grover Beach · San Luis Obispo County | — | — |
| C J Construction | Chad J Hettler | — | (805) 478 8533 | GC, remodel, ADU | Nipomo · San Luis Obispo County | — | — |
| C L Chandless Construction | Christopher John Chandless | — | (805) 980 5531 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| C L Martin Construction | Christopher Lee Martin | — | (805) 459 0515 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| C L O Masonry | C L O Masonry | chrislogan@clomasonry.com | (805) 704 4792 | Other | Morro Bay · San Luis Obispo County | — | — |
| C L Twisselman Dirtworks | C L Twisselman Dirtworks | — | (805) 441 1223 | Other | Templeton · San Luis Obispo County | — | — |
| C M G Construction | Claude Mathias Gallagher | — | (805) 441 0713 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| C M I Construction | Charles Mitchell Inman | — | (805) 440 9338 | GC, remodel, ADU | Templeton · San Luis Obispo County | — | — |
| C M Rounds Construction INC | Christopher Michael Rounds | — | (805) 550 4445 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| C M Welding | C M Welding | — | (805) 538 3702 | Other | Templeton · San Luis Obispo County | — | — |
| C Monteiro Concrete | C Monteiro Concrete | — | (805) 712 1919 | Other | Paso Robles · San Luis Obispo County | — | — |
| C P Enterprises INC | Leslie Dean Hellewell | — | (510) 915 1871 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| C R Construction | Chad Christopher Robbins | — | (805) 868 9994 | GC, remodel, ADU | Nipomo · San Luis Obispo County | — | — |
| C R I And Associates General Contracting | Christopher Ryan Isler | — | (805) 471 5695 | GC, remodel, ADU | Los Osos · San Luis Obispo County | — | — |
| C R I Contracting | Dennis Loren Jacobson | — | (805) 709 3001 | GC, remodel, ADU | Grover Beach · San Luis Obispo County | — | — |
| C Raynaud Construction | Charles Leon Raynaud | — | (805) 798 3779 | GC, remodel, ADU | Nipomo · San Luis Obispo County | — | — |
| C S Becker Const | C S Becker Const | — | (805) 550 9397 | GC, remodel, ADU | Morro Bay · San Luis Obispo County | — | — |