| Jsg Painting And Decorations INC | Jose Samuel Guerra Lopez | — | (831) 247 8785 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| Juan's Gardening | Juan's Gardening | — | (831) 707 5897 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Judson Muse | Judson Muse | — | (831) 515 7316 | Electricians | Santa Cruz · Santa Cruz County | — | — |
| Juenemann Painting INC | David Collins Juenemann | — | (831) 345 7252 | Windows, patio, painters | Capitola · Santa Cruz County | — | — |
| Justin Taylor Electric | Justin Lee Taylor | — | (831) 750 0924 | Electricians | Watsonville · Santa Cruz County | — | — |
| Jw Construction Services LLC | Marin Amar Brandt | — | (831) 566 3800 | GC, remodel, ADU | Soquel · Santa Cruz County | — | — |
| K & D Landscaping INC | Kendel William White | — | (831) 728 4018 | Windows, patio, painters | Freedom · Santa Cruz County | — | — |
| K Cook Masonry | K Cook Masonry | — | (831) 688 6622 | Other | Aptos · Santa Cruz County | — | — |
| K D W Construction | Kimo David White | — | (831) 295 2967 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| K G Construction | Kevin Patrick Gallagher | kyle@kgconstruction.com | (831) 334 9995 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| K L Construction | Kevin Perry Little | — | (831) 331 6152 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| K L S Electric | Michael Patrick Stillian | — | (408) 318 3265 | Electricians | Scotts Valley · Santa Cruz County | — | — |
| K P Construction | Ken John Pollastrini | — | (831) 345 7915 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| K T Mechanical INC | Kyle Albert Triacca | anapbm@gmail.com | (831) 475 8209 | HVAC | Santa Cruz · Santa Cruz County | — | — |
| K X Phariss | K X Phariss | — | (831) 236 2061 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| K2 Refrigeration LLC | Eugene Brasil Moules | — | (831) 566 1761 | HVAC | Watsonville · Santa Cruz County | — | — |
| K4 Enterprises INC | Patrick Joseph Kiely | — | (831) 818 3268 | Other | Aptos · Santa Cruz County | — | — |
| Kai Hoornbeck | Kai Hoornbeck | — | (831) 239 9905 | Electricians | Santa Cruz · Santa Cruz County | — | — |
| Kania Construction | Kyle Richard Kania | — | (831) 252 6719 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Karl Daniel Jacobson | Karl Daniel Jacobson | — | (831) 334 9870 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Karl Isacson | Karl Isacson | — | (408) 568 8905 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Kase Pacific Construction | Michael Robert Mollman | — | (831) 359 0243 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Kaspian Holdings Corporation DBA Precision Quality Builders | Matthew Roger Everson | — | (650) 969 7700 | GC, remodel, ADU | Capitola · Santa Cruz County | — | — |
| Katinc | John Jackson | — | (831) 588 7989 | Other | Felton · Santa Cruz County | — | — |
| Kc Builders Group INC | Jaime Valentine Loera | — | (831) 226 4099 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Kdh | Kevin David Heldt | — | (831) 320 4566 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Keith Pankow | Keith Pankow | — | (650) 451 2024 | Other | Scotts Valley · Santa Cruz County | — | — |
| Kel Kit Construction | George William Iii Tetrault | — | (831) 588 6292 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Kelly Kimes Const | Kelly Kimes Const | — | (831) 662 8607 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Ken Cross Construction | Kenneth William Iv Cross | — | (831) 419 6669 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Ken's Cabinets | Kenneth Edward Neill | — | (831) 438 3498 | Other | Scotts Valley · Santa Cruz County | — | — |
| Ken's Plumbing & Drains | Ken's Plumbing & Drains | — | (831) 295 0747 | Other | Aptos · Santa Cruz County | — | — |
| Kendall Electric | Josh Jamison Kendall | — | (831) 566 1701 | Electricians | Watsonville · Santa Cruz County | — | — |
| Kenlundpainting INC | Kenneth Wayne Skoglund | — | (831) 325 9559 | Windows, patio, painters | Soquel · Santa Cruz County | — | — |
| Kennedy Electric | Neil Thomas Kennedy | — | (831) 246 1931 | Electricians | Aptos · Santa Cruz County | — | — |
| Kennedy Roofing INC | Samuel Edward Kennedy | hello@kennedyroofing.com | (831) 728 4900 | Other roofers | Watsonville · Santa Cruz County | — | — |
| Kenneth Chrisman Construction | Kenneth Robert Chrisman | — | (831) 238 2783 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Kenny Rogers Plumbing INC | Kenneth Lee Rogers | — | (408) 592 5854 | Other | Boulder Creek · Santa Cruz County | — | — |
| Kensit Contracting & Plumbing | Timothy William Kensit | — | (650) 400 5219 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Kerkes Electric & Construction | Matthew Thomas Kerkes | — | (831) 421 2273 | Electricians | Santa Cruz · Santa Cruz County | — | — |