| Joe Lewis Premier Home Services | Joseph Michael Lewis | — | (530) 417 8095 | HVAC | Shingle Springs · El Dorado County | — | — |
| Joe Silva And Son's Plumbing | Joseph Frank Jr Silva | — | (530) 488 0926 | Other | Cool · El Dorado County | — | — |
| Joe Vicini INC | Renee Maxine Vicini | — | (530) 622 1963 | Other | Placerville · El Dorado County | — | — |
| John Beebe | John Beebe | — | (530) 409 4260 | Other | Diamond Springs · El Dorado County | — | — |
| John C Pine Iii | John C Pine Iii | — | (530) 919 3465 | Other | Lotus · El Dorado County | — | — |
| John C Pine Jr | John C Pine Jr | — | (530) 622 1306 | Other | Shingle Springs · El Dorado County | — | — |
| John D Beatty Jr | John D Beatty Jr | — | (925) 303 2027 | GC, remodel, ADU | Cameron Park · El Dorado County | — | — |
| John D Sterling | John D Sterling | — | (916) 804 9457 | GC, remodel, ADU | El Dorado Hills · El Dorado County | — | — |
| John Edward La Porta | John Edward La Porta | — | (916) 599 0188 | GC, remodel, ADU | Shingle Springs · El Dorado County | — | — |
| John F Kent | John F Kent | — | (831) 588 2661 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| John Grey Construction | John David Grey | — | (916) 870 6735 | GC, remodel, ADU | Cool · El Dorado County | — | — |
| John Holland Murals | John Holland Murals | — | (619) 200 5942 | Windows, patio, painters | South Lake Tahoe · El Dorado County | — | — |
| John Hudson Construction | John Richard Jr Hudson | — | (916) 337 1689 | GC, remodel, ADU | Greenwood · El Dorado County | — | — |
| John Joseph Navickas | John Joseph Navickas | — | (916) 337 9064 | GC, remodel, ADU | El Dorado Hills · El Dorado County | — | — |
| John Lowe Construction Company | John David Lowe | — | (530) 542 0673 | GC, remodel, ADU | South Lake Tahoe · El Dorado County | — | — |
| John Muir Glass Service | John Steven Muir | — | (916) 628 4119 | Windows, patio, painters | Cameron Park · El Dorado County | — | — |
| John O'rourke | John O'rourke | — | (415) 374 6369 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| John Panos | John Panos | — | (530) 863 9635 | Electricians | Placerville · El Dorado County | — | — |
| John Priest Construction | Joshua Loren Priest | — | (530) 306 8058 | GC, remodel, ADU | Pollock Pines · El Dorado County | — | — |
| John Suttey's Hammer | John Suttey's Hammer | — | (530) 417 2082 | GC, remodel, ADU | Pollock Pines · El Dorado County | — | — |
| John Taylor Painting | John Taylor Painting | — | (530) 318 0342 | Windows, patio, painters | South Lake Tahoe · El Dorado County | — | — |
| John's Plumbing | John's Plumbing | — | (916) 956 6460 | Other | Garden Valley · El Dorado County | — | — |
| Johnson & Johnson Pool & Spa Service & Repair | Gerald Michael Johnson | — | (530) 647 0846 | Pool | Pollock Pines · El Dorado County | — | — |
| Johnston Painting | Johnston Painting | — | (530) 344 6439 | Windows, patio, painters | Placerville · El Dorado County | — | — |
| Jon Vander Putten Construction | Jonathan Jeffrey Vander Putten | — | (530) 919 9021 | GC, remodel, ADU | Camino · El Dorado County | — | — |
| Jon Wright Construction | Jon Kevin Wright | — | (530) 417 0661 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| Jonas Clark Construction | Jonas Daniel Clark | — | (916) 943 5877 | Other | Placerville · El Dorado County | — | — |
| Jones Electric INC | Matthew Paul Jones | — | (530) 304 0558 | Electricians | Pollock Pines · El Dorado County | — | — |
| Jong Yi Construction Company | Jong Yol Yi | — | (916) 747 1409 | GC, remodel, ADU | Cameron Park · El Dorado County | — | — |
| Jordan Joel Heichman | Jordan Joel Heichman | — | (530) 621 4052 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| Jorgensen Construction Company | Arne Bruce Jorgensen | — | (530) 391 5539 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| Jose's California Tile | Jose's California Tile | — | (530) 363 6274 | Other | Diamond Springs · El Dorado County | — | — |
| Jose's Tree Service INC | J Santos Reyes | — | (530) 957 4826 | Tree | Placerville · El Dorado County | — | — |
| Joseph Karl Loesche | Joseph Karl Loesche | — | (925) 963 3954 | GC, remodel, ADU | Shingle Springs · El Dorado County | — | — |
| Joseph's Hammer LLC | Peter Joseph Navarini | — | (916) 318 9631 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| Josh Gove Landscape | Josh Gove Landscape | — | (916) 628 4700 | Windows, patio, painters | El Dorado Hills · El Dorado County | — | — |
| Joshua Feis Construction | Joshua Ryan Feis | — | (530) 228 4257 | GC, remodel, ADU | Camino · El Dorado County | — | — |
| Joshua Morgan Construction | Joshua Robert Morgan | — | (530) 417 3414 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| Journeyman Builders | Journeyman Builders | — | (530) 903 9619 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| Journeymen Builders | Journeymen Builders | — | (530) 409 7747 | GC, remodel, ADU | Placerville · El Dorado County | — | — |