| Justin Crockett DBA Brand Creative | Justin Crockett DBA Brand Creative | — | (805) 668 2189 | Other | Arroyo Grande · San Luis Obispo County | — | — |
| Justin Jackson Plumbing Service | Edward John Mc Call | — | (805) 503 0921 | Other | Grover Beach · San Luis Obispo County | — | — |
| Justin Wheeler Construction | Justin Arnold Wheeler | — | (805) 748 4201 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Jv Roofing INC | Jose Luis Valdovinos Figueroa | — | (805) 674 1383 | Other roofers | San Miguel · San Luis Obispo County | — | — |
| Jvf Construction | Jon Vladimir Froloff | — | (360) 490 4482 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Jwc & Welding INC | John Charles Jr Wright | — | (805) 459 7302 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| K & G Custom Construction Co | John Darrin Brooks | — | (805) 709 9153 | GC, remodel, ADU | Pismo Beach · San Luis Obispo County | — | — |
| K B M Construction | Andrew Patrick Mc Clory | — | (805) 602 2477 | GC, remodel, ADU | Cayucos · San Luis Obispo County | — | — |
| K Brush Concrete | Jennifer Carrie Brush | — | (805) 423 4033 | Other | Paso Robles · San Luis Obispo County | — | — |
| K C I Environmental INC | Curtis Lee Boutwell | — | (805) 543 3311 | Windows, patio, painters | San Luis Obispo · San Luis Obispo County | — | — |
| K D B Backhoe Service | Kenneth Earl Bridgman | — | (805) 674 2515 | Other | Creston · San Luis Obispo County | — | — |
| K D Janni Landscaping INC | Keith Douglas Janni | — | (805) 541 4944 | Windows, patio, painters | San Luis Obispo · San Luis Obispo County | — | — |
| K M L Construction | Steve Gregg Schneider | — | (805) 481 0026 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| K M S Custom Carpentry | K M S Custom Carpentry | — | (805) 481 6709 | Other | Arroyo Grande · San Luis Obispo County | — | — |
| K R Construction INC | Kevin James Robinson | — | (831) 970 2736 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| K S P Construction | Keith Scott Pilger | — | (805) 975 6011 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| K T & Son's Sealcoating | K T & Son's Sealcoating | — | (805) 712 5621 | Other | Atascadero · San Luis Obispo County | — | — |
| K W Curtis Enterprises INC DBA Whits Turn Tree Care | Whitney Nicholas Curtis | — | (805) 434 9630 | Tree | Templeton · San Luis Obispo County | — | — |
| Kacy Elisarraras Construction INC | Kacy Ray Elisarraras | — | (805) 610 5024 | GC, remodel, ADU | Templeton · San Luis Obispo County | — | — |
| Kadco Construction And Building Services | Thomas Alton Becker | — | (805) 458 0113 | Electricians | Pismo Beach · San Luis Obispo County | — | — |
| Kain Building And Design Group LLC | Sean Glen Kain | — | (805) 439 4344 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Kain Construction Company | Sean Glen Kain | — | (262) 408-2312 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Kairos Manufacturing INC | Daniel Cline Ferreira | — | (805) 544 2216 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Kaizen Construction Consultants INC | William John Faulkner | — | (310) 592 7182 | GC, remodel, ADU | Creston · San Luis Obispo County | — | — |
| Kaler Construction Refrigeration Electrical General | Harbans Singh-Kaler | — | (805) 441 6504 | HVAC | Los Osos · San Luis Obispo County | — | — |
| Kalvin J Packett | Kalvin J Packett | — | (805) 714 4672 | GC, remodel, ADU | Nipomo · San Luis Obispo County | — | — |
| Kanaloa Kreation's Landscape & Design | Kanaloa Kreation's Landscape & Design | — | (805) 354 9592 | Windows, patio, painters | Arroyo Grande · San Luis Obispo County | — | — |
| Kanga Connect | John Andrew Rees | — | (805) 500 8322 | Other | Paso Robles · San Luis Obispo County | — | — |
| Karen J Barron | Karen J Barron | — | (805) 235 7819 | Other | Arroyo Grande · San Luis Obispo County | — | — |
| Karen's Custom Painting | Karen's Custom Painting | — | (805) 712 4222 | Windows, patio, painters | Atascadero · San Luis Obispo County | — | — |
| Karl Gage | Karl Gage | — | (805) 440 6807 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Kc Gregory LLC | Kier Gregory Cotton | kcotton@kc-gregory.com | (925) 344 1591 | Electricians | Arroyo Grande · San Luis Obispo County | — | — |
| Keefe Engineering | Keefe Engineering | — | (805) 837 7877 | Other | Atascadero · San Luis Obispo County | — | — |
| Keenes Pool Maintenance Incorporated | Andrew Philip Keene | — | (661) 342 1859 | Pool | Pismo Beach · San Luis Obispo County | — | — |
| Keif Electric | Adam Wesley Keif | adam@keifelectric.com | (805) 286 0477 | Electricians | San Luis Obispo · San Luis Obispo County | — | — |
| Keith Company Contractors | Peter Donald Keith | — | (805) 459 2401 | GC, remodel, ADU | Grover Beach · San Luis Obispo County | — | — |
| Keith Gaffney Landscape INC | Keith Patrick Gaffney | — | (805) 772 0128 | Windows, patio, painters | Morro Bay · San Luis Obispo County | — | — |
| Keith Speidel | Keith Speidel | — | (805) 234 1294 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Kelleher Construction | Daniel John Kelleher | — | (805) 909 9609 | GC, remodel, ADU | Cambria · San Luis Obispo County | — | — |
| Kellie Avila Construction Services INC DBA Avila Traffic Safety | Kellie Kay Avila | — | (805) 461 1600 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |