| Kmk Construction And Design INC | Kozak Konstantin | — | (916) 303 6120 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Knight's Glass | Knight's Glass | — | (916) 600 5338 | Windows, patio, painters | Lincoln · Placer County | — | — |
| Knotts Construction | David B Knotts | — | (916) 508 8443 | GC, remodel, ADU | Rocklin · Placer County | — | — |
| Knottydog Woodshop LLC | Oscar David Loza | knottydogwoodshop@gmail.com | (805) 895 3668 | Other | Roseville · Placer County | — | — |
| Kodiak Roofing & Waterproofing LLC | Dwayne Richard Nash | — | (916) 253 1900 | Other roofers | Roseville · Placer County | — | — |
| Kodiak Roofing And Waterproofing LLC | Dwayne Richard Nash | — | (916) 253 1900 | Other roofers | Roseville · Placer County | — | — |
| Kodiak Union Roofing Services LLC | David Alan Pope | — | (916) 253 1900 | Other roofers | Roseville · Placer County | — | — |
| Kohler Pools | Kohler Pools | — | (916) 872 7835 | Pool | Roseville · Placer County | — | — |
| Konrad Heating & Air | Konrad Heating & Air | — | (530) 888 1907 | HVAC | Auburn · Placer County | — | — |
| Korish Electric INC | Vyacheslav Lapatskiy | slava.l@korishelectric.com | (916) 716 5772 | Electricians | Roseville · Placer County | — | — |
| Kova Industries INC | Aleksander Yuryevich Kovalev | — | (814) 240 8297 | Other | Lincoln · Placer County | — | — |
| Kranick Electric INC | Daniel Charles Kranick | — | (916) 587 1461 | Electricians | Auburn · Placer County | — | — |
| Kranzler Construction | John Paul Kranzler | — | (530) 217 9288 | GC, remodel, ADU | Foresthill · Placer County | — | — |
| Krueger Carpet | Krueger Carpet | — | (731) 676 7428 | Other | Colfax · Placer County | — | — |
| Ktm Construction LLC | Matthew David Freeman | — | (916) 275 6917 | GC, remodel, ADU | Lincoln · Placer County | — | — |
| Ktn Roofing LLC | Fernando Enrique Banuelos | fernando@ktnroofing.com | (916) 581-1295 | Other roofers | Newcastle · Placer County | — | — |
| Kula Floors INC | Igor Yuryevich Kulaksyz | — | (916) 255 7835 | Other | Roseville · Placer County | — | — |
| Kulber Builders INC | Siarhei Tsetsereuleu | — | (916) 291 2711 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Kurt Fitzhugh Construction | Kurtis Wayne Fitzhugh | — | (530) 320 8441 | GC, remodel, ADU | Meadow Vista · Placer County | — | — |
| Kurt Voigt | Kurt Voigt | — | (916) 295 8423 | Windows, patio, painters | Lincoln · Placer County | — | — |
| Kw Masonry | Kw Masonry | — | (916) 505 3063 | Other | Newcastle · Placer County | — | — |
| Kyle Schmitz Construction | Kyle Robert Schmitz | — | (916) 628 1692 | GC, remodel, ADU | Loomis · Placer County | — | — |
| Kyler Konstruction | Kyler Konstruction | — | (916) 402 1979 | GC, remodel, ADU | Foresthill · Placer County | — | — |
| Kyles Portable Welding | Kyles Portable Welding | — | (916) 956 9353 | Other | Newcastle · Placer County | — | — |
| L & H Airco | Eric Duane Crise | — | (559) 253-9660 | HVAC | Rocklin · Placer County | — | — |
| L & L Concrete Construction Co | David Alan Libby | — | (530) 550 0189 | Other | Tahoe City · Placer County | — | — |
| L A Jessup Construction | Lawrence Angelo Jessup | — | (650) 465 3008 | GC, remodel, ADU | Rocklin · Placer County | — | — |
| L B C Lincoln Bachman Construction | Lincoln Robert Bachman | — | (916) 616 5463 | GC, remodel, ADU | Roseville · Placer County | — | — |
| L C I Construction | Irigaray Christopher | — | (530) 613 5657 | GC, remodel, ADU | Penryn · Placer County | — | — |
| L D Construction | Josue Gustavo Argueta Ramos | info@ldconstruction.com | (530) 368 3162 | GC, remodel, ADU | Auburn · Placer County | — | — |
| L H R Const | James Delane Letcher | — | (916) 825 5619 | GC, remodel, ADU | Auburn · Placer County | — | — |
| L M I Construction | Louis Michel Jr Irigaray | — | (530) 613 5657 | GC, remodel, ADU | Penryn · Placer County | — | — |
| L P Construction & Facilities Services | Lonnie Dean Powders | — | (916) 254 7248 | GC, remodel, ADU | Roseville · Placer County | — | — |
| L R Landscaping & Pavers | L R Landscaping & Pavers | — | (916) 502 6037 | Windows, patio, painters | Auburn · Placer County | — | — |
| L V H Construction | Lawrence Wayne Van Hook | — | (530) 386 4544 | GC, remodel, ADU | Kings Beach · Placer County | — | — |
| L&s Construction Services INC | Jon David Miranda | — | (916) 253 9280 | GC, remodel, ADU | Rocklin · Placer County | — | — |
| L&s Framing INC | Timothy James La Voie | impallari@gmail.com | (916) 408 3600 | GC, remodel, ADU | Rocklin · Placer County | — | — |
| L1r DBA Level 1 Roofing | Jason Aaron Burgess | — | (916) 258 7393 | Other roofers | Loomis · Placer County | — | — |
| Labrie Electric | Willie Joseph Jr Labrie | — | (530) 308 1945 | Electricians | Auburn · Placer County | — | — |
| Lacroix Davis LLC | James Raymond La Croix | — | (916) 984 1090 | GC, remodel, ADU | Granite Bay · Placer County | — | — |