| K Mattingly Concrete | K Mattingly Concrete | — | (530) 561 0977 | Other | Red Bluff · Tehama County | — | — |
| K S Frank Construction | Kurt Stephen Frank | — | (530) 519 0155 | GC, remodel, ADU | Los Molinos · Tehama County | — | — |
| Kanakis Painting | Kanakis Painting | — | (530) 681 9600 | Windows, patio, painters | Corning · Tehama County | — | — |
| Keeling Construction | Michael Vernon Keeling | — | (530) 570 7981 | GC, remodel, ADU | Corning · Tehama County | — | — |
| Keeling Construction INC | Michael Vernon Keeling | — | (530) 228 8055 | GC, remodel, ADU | Corning · Tehama County | — | — |
| Keith Hiller Construction | Keith Joseph Hiller | — | (530) 209 0704 | GC, remodel, ADU | Flournoy · Tehama County | — | — |
| Kenneth R Stannard | Kenneth R Stannard | — | (530) 526 1748 | GC, remodel, ADU | Red Bluff · Tehama County | — | — |
| Kevin Ross Tile | Kevin Ross Tile | — | (530) 200 4844 | Other | Red Bluff · Tehama County | — | — |
| Kevin Shawn Warner | Kevin Shawn Warner | — | (530) 526 2530 | Electricians | Red Bluff · Tehama County | — | — |
| Kimbor Tree Service | Esperanza Solorzano Ruvalcaba | — | (530) 828 3831 | Tree | Los Molinos · Tehama County | — | — |
| Kingdom Roofing INC | Thomas Edward Garrett | — | (530) 736 2813 | Other roofers | Red Bluff · Tehama County | — | — |
| Kirkwood Backhoe Service | Douglas Robert Deleray | — | (530) 824 2253 | Other | Corning · Tehama County | — | — |
| Kupfer Concrete Construction | Michael Joseph Kupfer | — | (530) 736 8104 | Other | Red Bluff · Tehama County | — | — |
| L Edson Engineering | L Edson Engineering | — | (530) 727 7180 | Other | Vina · Tehama County | — | — |
| L G Construction | Luis Alberto Garcia | — | (530) 354 2806 | GC, remodel, ADU | Corning · Tehama County | — | — |
| L&b Metal Product Fabrication | Lester Ray Brooks | — | (530) 521 3044 | Other | Red Bluff · Tehama County | — | — |
| Lamb Unlimited General Engineering | Cody Ray Lamb | — | (530) 518 9082 | Other | Corning · Tehama County | — | — |
| Landscape/property Maintenance | Jerry Jason Gross | — | (530) 510 8073 | Windows, patio, painters | Red Bluff · Tehama County | — | — |
| Laredo Roofing | Laredo Favian | — | (530) 209 5273 | Other roofers | Corning · Tehama County | — | — |
| Larry D's Custom Floor Installations | Larry D's Custom Floor Installations | — | (530) 520 5281 | Other | Red Bluff · Tehama County | — | — |
| Lassen Pile | Donnavan Houston Kelley | — | (530) 366 1913 | Other | Proberta · Tehama County | — | — |
| Lawless Construction | Kurt Dwayne Zimmerman | — | (530) 215 9970 | GC, remodel, ADU | Manton · Tehama County | — | — |
| Legit Painting | Legit Painting | — | (530) 921 6267 | Windows, patio, painters | Red Bluff · Tehama County | — | — |
| Lentec | Leonard Lee Ii Flaiz | — | (530) 529 1878 | Other | Red Bluff · Tehama County | — | — |
| Lentec INC | Leonard Lee Ii Flaiz | — | (530) 529 1878 | GC, remodel, ADU | Red Bluff · Tehama County | — | — |
| Lepage Company INC | James Phillip Lepage | — | (530) 529 9901 | GC, remodel, ADU | Red Bluff · Tehama County | — | — |
| Leroy Johnson Concrete | Leroy Johnson Concrete | — | (530) 529 5424 | Other | Red Bluff · Tehama County | — | — |
| Live Wire Communication | Live Wire Communication | — | (510) 304 0429 | Other | Los Molinos · Tehama County | — | — |
| Long Construction | Mathew Jacob Sorenson-long | — | (530) 624 4586 | GC, remodel, ADU | Corning · Tehama County | — | — |
| Lucero Construction | Russ Johnston Lucero | hi@typemade.mx | (530) 586 0152 | GC, remodel, ADU | Corning · Tehama County | — | — |
| Luke Alexander Construction INC | Lucas Dean Alexander | — | (530) 520 5309 | GC, remodel, ADU | Corning · Tehama County | — | — |
| M C L Construction | Michael Craig Lee | — | (818) 624 5903 | GC, remodel, ADU | Corning · Tehama County | — | — |
| M D Site Grading INC | Jesse Alden Mendenhall | — | (530) 736 2064 | GC, remodel, ADU | Red Bluff · Tehama County | — | — |
| Make It Right Construction | Michael Norbert Jr Nystrom | denis@makeitrightconstruction.com | (530) 736 8156 | GC, remodel, ADU | Red Bluff · Tehama County | — | — |
| Mares Painting | Mares Painting | — | (408) 417 2507 | Windows, patio, painters | Corning · Tehama County | — | — |
| Mark Nelson Builders | Mark Nelson Builders | — | (530) 200 5581 | Electricians | Red Bluff · Tehama County | — | — |
| Mateo Meras Construction | Mateo Jr Meras | — | (414) 699 5029 | GC, remodel, ADU | Corning · Tehama County | — | — |
| Matt Jackson's Pest Control | Matt Jackson's Pest Control | — | (530) 528-0888 | Pest, tile roofs | Red Bluff · Tehama County | — | — |
| Matt Terry & Assoc | Matt Terry & Assoc | — | (530) 366 4442 | Windows, patio, painters | Tehama · Tehama County | — | — |
| Mattingly Construction | William Bradford Mattingly | bids@mattinglyconstruction.com | (530) 200 5283 | Other | Red Bluff · Tehama County | — | — |