| Klackle's Restoration Co | Kurt Carson Klackle | — | (530) 570 9518 | GC, remodel, ADU | Paradise · Butte County | — | — |
| Klaus Construction | Thomas Patrick Klaus | — | (707) 322 6075 | GC, remodel, ADU | Forest Ranch · Butte County | — | — |
| Knife River Construction | Marc Andrew Ingvoldsen | — | (530) 891 6555 | Other | Chico · Butte County | — | — |
| Knight Building Corporation | Timothy David Knight | — | (530) 591 9420 | GC, remodel, ADU | Chico · Butte County | — | — |
| Koehler Construction | Matthew Avory Koehler | — | (530) 588 2452 | GC, remodel, ADU | Chico · Butte County | — | — |
| Kp Builders Corp | Phillip Alan Harvey | — | (530) 513 2104 | GC, remodel, ADU | Paradise · Butte County | — | — |
| Kris Gilbert Construction | Kris Aaron Gilbert | — | (530) 566 4943 | GC, remodel, ADU | Chico · Butte County | — | — |
| Krum Construction | Scott Michael Krum | — | (530) 519 7740 | GC, remodel, ADU | Chico · Butte County | — | — |
| Kryptonite Mechanical INC DBA Kryptonite Metal Works | Anthony Scott Roach | — | (530) 961 2104 | Other | Chico · Butte County | — | — |
| Kunst Painting & Decorating | Kunst Painting & Decorating | — | (530) 570 8289 | Windows, patio, painters | Paradise · Butte County | — | — |
| Kuzmack Construction | David Alan Kuzmack | — | (530) 521 4589 | GC, remodel, ADU | Paradise · Butte County | — | — |
| Kyle Madson Grid Tech Electric | Kyle Nathan Madson | — | (530) 680 9615 | Electricians | Chico · Butte County | — | — |
| Kyle Ritchey Construction | Kyle Martin Ritchey | — | (530) 520 2374 | GC, remodel, ADU | Paradise · Butte County | — | — |
| L & C Landscape INC | Bruce Alan Burton | — | (530) 342 3082 | Windows, patio, painters | Chico · Butte County | — | — |
| L & L Construction | Louis Richard Majoulet | — | (415) 302 3894 | GC, remodel, ADU | Paradise · Butte County | — | — |
| L & R Landscape Service INC | Guadalupe Ruvalcaba | — | (530) 990 9531 | Windows, patio, painters | Palermo · Butte County | — | — |
| L G Construction | Luke Conrad Gordon | — | (530) 321 6988 | GC, remodel, ADU | Chico · Butte County | — | — |
| L Gage Chrysler Iii | L Gage Chrysler Iii | — | (530) 518 7204 | GC, remodel, ADU | Chico · Butte County | — | — |
| L&l Landscapes INC | Soria Leonel Alvarado | — | (530) 990 6043 | Windows, patio, painters | Palermo · Butte County | — | — |
| Lacombe Curb And Concrete | Lacombe Curb And Concrete | — | (530) 518 9376 | Other | Chico · Butte County | — | — |
| Lafontaine Construction | Daniel Albert Lafontaine | — | (530) 781 2023 | GC, remodel, ADU | Paradise · Butte County | — | — |
| Lakeview Mechanical Services | Dan Erich Gehrke | — | (925) 584 2981 | HVAC | Oroville · Butte County | — | — |
| Lamar Transit LLC | Russell Martin Raburn | — | (530) 342 3235 | Other | Chico · Butte County | — | — |
| Lance Jones Construction | Lance Coleman Jones | — | (530) 209 4068 | GC, remodel, ADU | Chico · Butte County | — | — |
| Lance Sharp Custom Construction | Lance Anthony Sharp | — | (530) 514 7771 | GC, remodel, ADU | Paradise · Butte County | — | — |
| Land Landscaping | Land Landscaping | — | (530) 591 4666 | Windows, patio, painters | Chico · Butte County | — | — |
| Landcrafts | James Francis Haye Driscoll | — | (530) 403 9734 | Windows, patio, painters | Chico · Butte County | — | — |
| Landcrafts | James Thomas Braten | — | (530) 894 6862 | Windows, patio, painters | Chico · Butte County | — | — |
| Landmark Construction And Development | David Wayne Schell | — | (530) 893 4335 | GC, remodel, ADU | Durham · Butte County | — | — |
| Landrum Construction | Aubrey Dwayne Landrum | — | (530) 514 3817 | GC, remodel, ADU | Chico · Butte County | — | — |
| Landscape Plus | Landscape Plus | — | (530) 321 3468 | Windows, patio, painters | Chico · Butte County | — | — |
| Landscapes By Stach | Landscapes By Stach | — | (530) 433 6231 | Windows, patio, painters | Oroville · Butte County | — | — |
| Larkin Construction | James Edward Larkin | — | (530) 321 5946 | GC, remodel, ADU | Chico · Butte County | — | — |
| Larkin Design / Build | Larkin Design / Build | — | (530) 966 8210 | GC, remodel, ADU | Chico · Butte County | — | — |
| Larry Dunks Construction | Larry Wayne Dunks | — | (530) 258 1459 | GC, remodel, ADU | Oroville · Butte County | — | — |
| Larry Ferguson's Lawn & Garden Plus | Larry Lionel Ferguson | — | (530) 415 3211 | Windows, patio, painters | Biggs · Butte County | — | — |
| Larry M Sullivan Jr | Larry M Sullivan Jr | — | (530) 864 2012 | GC, remodel, ADU | Oroville · Butte County | — | — |
| Larry Porter Construction INC | Larry Lee Jr Porter | — | (530) 521 6727 | GC, remodel, ADU | Chico · Butte County | — | — |
| Larry West Construction | Larry Donald West | — | (530) 520 5468 | GC, remodel, ADU | Oroville · Butte County | — | — |
| Larson Finish INC | David Andrew Larson | — | (530) 521 7699 | Other | Chico · Butte County | — | — |