| Jeremy Miller | Jeremy Miller | — | (831) 332 4612 | Electricians | Santa Cruz · Santa Cruz County | — | — |
| Jeremy Phillips Electrical | Jeremy Allen Phillips | — | (831) 419 1384 | Electricians | Scotts Valley · Santa Cruz County | — | — |
| Jerry Allison Landscaping INC | Jerry Michael Allison | — | (831) 688 6746 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| Jerry Best Painting | Jerry Best Painting | — | (831) 428 4144 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| Jesse Concrete INC | Anaya Jesus Martinez | — | (831) 239 8692 | Other | Santa Cruz · Santa Cruz County | — | — |
| Jesse Fuentes Flooring | Jesse Fuentes Flooring | — | (831) 840 5718 | Other | Watsonville · Santa Cruz County | — | — |
| Jesse M Cunha Construction | Jesse Martin Cunha | — | (831) 889 0039 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Jessi Phillips Electric | Jessi Levi Phillips | jessi.phillips@yahoo.com | (831) 246 2948 | Electricians | Ben Lomond · Santa Cruz County | — | — |
| Jet Mulch INC | Ryan Kai Gamboa | info@jetmulch.com | (866) 306 8524 | Windows, patio, painters | Capitola · Santa Cruz County | — | — |
| Jg Legacy Painting | Jg Legacy Painting | — | (831) 316 8067 | Windows, patio, painters | Scotts Valley · Santa Cruz County | — | — |
| Jgs Cabinet Installations | Barrow Brett | — | (408) 592 6353 | Other | Santa Cruz · Santa Cruz County | — | — |
| Jim Claude Kimbrel | Jim Claude Kimbrel | — | (408) 672 0125 | GC, remodel, ADU | Freedom · Santa Cruz County | — | — |
| Jim Locatelli | Jim Locatelli | — | (831) 345 0118 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Jim Michel Construction | James Tory Michel | — | (831) 334 8680 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Jim Somerville Construction | James Franklin Somerville | — | (831) 247 1652 | GC, remodel, ADU | Soquel · Santa Cruz County | — | — |
| Jimenez Roofing | Jimenez Guzman Omar | jiroof_99@yahoo.com | (831) 840 9686 | Other roofers | Watsonville · Santa Cruz County | — | — |
| Jines Underground Construction | Bradley Alan Jines | — | (831) 205 3111 | Other | Boulder Creek · Santa Cruz County | — | — |
| Jinio Hernandez | Jinio Hernandez | — | (831) 566 1220 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Jjm Painting INC | Jjm Painting INC | — | (831) 476-4211 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Jlv Electric INC | Jesse Eugene La Verne | — | (831) 247 7823 | Electricians | Ben Lomond · Santa Cruz County | — | — |
| Jm Jarquin Concrete INC | Jose Manuel Jarquin Velasco | — | (831) 254 2606 | Other | Watsonville · Santa Cruz County | — | — |
| Jmg Building Works INC | Josh Matthew Goodman | — | (831) 662 3717 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Joby Aero INC | Daniel Thomas Mckinnon | — | (831) 713 9272 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Jody The Painter | Jody The Painter | — | (831) 435 0099 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Joe Callero | Joe Callero | — | (831) 278 2772 | Other | Aptos · Santa Cruz County | — | — |
| Joe Hibberd Tile | Joe Hibberd Tile | — | (831) 334 2536 | Other | Santa Cruz · Santa Cruz County | — | — |
| Joe Silva Painting | Joe Silva Painting | — | (831) 566 3412 | Windows, patio, painters | Felton · Santa Cruz County | — | — |
| Joel Craig | Joel Craig | — | (831) 331 3989 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Joel M Boisvert Construction | Joel Martin Boisvert | — | (831) 212 9256 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Joey Dunton Construction | Christopher Joseph Ii Dunton | — | (209) 304 8230 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| John A Molina Building | John A Molina Building | — | (408) 204 6929 | GC, remodel, ADU | Ben Lomond · Santa Cruz County | — | — |
| John Ainley Construction | John Joseph Ainley | — | (831) 239 4704 | GC, remodel, ADU | Soquel · Santa Cruz County | — | — |
| John B Nilsen Construction | John Bert Nilsen | — | (650) 207 1674 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| John Biakanja Stain & Paint | John Biakanja Stain & Paint | — | (831) 247 1861 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| John Byrnes Construction | John Sheridan Byrnes | — | (831) 809 4226 | Electricians | Santa Cruz · Santa Cruz County | — | — |
| John Christopher Hanagan | John Christopher Hanagan | — | (408) 857 4832 | GC, remodel, ADU | Boulder Creek · Santa Cruz County | — | — |
| John Cook Drapery And Blind Installations | John James Cook | — | (408) 314 6166 | Other | Boulder Creek · Santa Cruz County | — | — |
| John Fuchs Construction | John Gerard Fuchs | — | (831) 688 8008 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| John G Gonzales | John G Gonzales | — | (831) 471 2721 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| John Hilberath Plumbing & Rooter INC | John Ray Jr Hilberath | — | (831) 713 9448 | Other | Santa Cruz · Santa Cruz County | — | — |