| Kessler Tile Co | Aaron Raymond Kessler | — | (831) 566 2088 | Other | Boulder Creek · Santa Cruz County | — | — |
| Ketterman Construction | Gabriel Forrest Ketterman | — | (831) 713 8946 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Kevin Clark Construction | Kevin Frank Clark | — | (831) 540 7172 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Kevin Foster Construction | Kevin Wayne Foster | — | (831) 588 2055 | GC, remodel, ADU | Boulder Creek · Santa Cruz County | — | — |
| Kevin Hernan Construction INC | Kevin Thomas Hernan | — | (831) 588 0721 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Kevin Mc Elhinny Masonry | Kevin Mc Elhinny Masonry | — | (831) 462 2529 | Other | Soquel · Santa Cruz County | — | — |
| Kevin P Schromm | Kevin P Schromm | — | (831) 458 1897 | Other | Santa Cruz · Santa Cruz County | — | — |
| Kevin T Hernan Construction | Kevin Thomas Hernan | — | (831) 588 0721 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Keystone Masonry Heat | Keystone Masonry Heat | — | (831) 400 8579 | Other | Santa Cruz · Santa Cruz County | — | — |
| Killian Construction And Painting | Scott Andrew Killian | — | (805) 440 2013 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Kindwood Millwork | Kindwood Millwork | rob@companykind.com | (831) 246 2026 | Other | Ben Lomond · Santa Cruz County | — | — |
| Kissinger Construction INC | John Derrick Kissinger | — | (831) 402 6016 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Kitchen Tune-up Of Monterey Bay | Bruce Lawrence Murphy | — | (831) 281 3131 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Kl Building | Kl Building | — | (831) 234 6017 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Klein Gardening Service | Christopher Aaron Klein | — | (831) 234 2982 | Windows, patio, painters | Capitola · Santa Cruz County | — | — |
| Klt Enterprises LLC DBA Kathy's Lift Truck & Lighting Service | James Alexander Hutchinson | — | (831) 724 8802 | Electricians | Corralitos · Santa Cruz County | — | — |
| Km Electric | Keaton Patrick Mayer | — | (831) 295 2966 | Electricians | Scotts Valley · Santa Cruz County | — | — |
| Knight's Home Improvement | Knight's Home Improvement | — | (831) 688 5277 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Knowlton Construction LLC | Paul Avila Jr Moreno | — | (831) 722 1730 | Other roofers | Freedom · Santa Cruz County | — | — |
| Knox Roofing | Warren Henry Knox | — | (831) 461 0634 | Other roofers | Scotts Valley · Santa Cruz County | — | — |
| Knutson Woodworks | Knutson Woodworks | stunts@cruzio.com | (831) 588 2006 | Other | Watsonville · Santa Cruz County | — | — |
| Koneya Construction | Enver Antin Koneya | — | (415) 702 7314 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Konstantin Sidorov Painting | Konstantin Sidorov Painting | — | (831) 428 4921 | Windows, patio, painters | Aptos · Santa Cruz County | — | — |
| Kool Landscape | Kool Landscape | — | (831) 359 3794 | Windows, patio, painters | Soquel · Santa Cruz County | — | — |
| Kraemer Elevator Load Testing | Kraemer Elevator Load Testing | — | (831) 435 6605 | Other | Santa Cruz · Santa Cruz County | — | — |
| Kraft Plumbing LLC | Jedidiah Roy Kraft | — | (831) 278 2740 | Other | Santa Cruz · Santa Cruz County | — | — |
| Kreative Woodworx | Kreative Woodworx | vikram@kreativewoodworx.com | (831) 325 8507 | Other | Santa Cruz · Santa Cruz County | — | — |
| Kriege Construction INC | Stuart Rutherford Kriege | stuart@kriegeconstruction.com | (831) 246-1381 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Krilanovich Woodworks INC | Leigh Eric Krilanovich | impallari@gmail.com | (831) 431 6085 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Kromatic INC | Nicholas Ross Kromat | — | (650) 295 9386 | Other | Felton · Santa Cruz County | — | — |
| Krulicki Construction INC | Kyra Cecilie Odenkirchen-Krulicki | — | (831) 685 8351 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Kuck Construction INC | Shane Christopher Kuck | — | (831) 345 5362 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Kuhlman Roofing Co INC | Jesse Alfonso Sida | — | (831) 724 6293 | Other roofers | Freedom · Santa Cruz County | — | — |
| Kurt Meyer | Kurt Meyer | — | (831) 818 0316 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Kurt Mortensen Services INC | Kurtis Kramer Mortensen | — | (415) 710 3687 | Other | Boulder Creek · Santa Cruz County | — | — |
| Kurt Richard Christiansen | Kurt Richard Christiansen | — | (831) 458 2005 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| L & M Fire Protection | Scott Phillip Linden | lmfirepro@gmail.com | (831) 479 0445 | Other | Soquel · Santa Cruz County | — | — |
| L & M Residential Builders | Michael Joseph Matthes | — | (831) 334 1458 | GC, remodel, ADU | Boulder Creek · Santa Cruz County | — | — |
| L Avila Electric INC | Luis Miguel Avila | — | (831) 234 8671 | Electricians | Freedom · Santa Cruz County | — | — |
| La Espuela Construction | Hernandez Darley Reyes | — | (831) 740 2781 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |