| Jp Tree Service | Gerardo Jared Perez Sanchez | — | (909) 229-3573 | Other | Placerville · El Dorado County | — | — |
| Jr Builder | Jr Builder | — | (530) 651 4471 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| Jrp Incorporated | Jose Jesus Rosas | — | (916) 247 3847 | Windows, patio, painters | Rescue · El Dorado County | — | — |
| Js Services Landscape INC | Jared Paul Schablaske | — | (530) 919 5417 | Windows, patio, painters | Cameron Park · El Dorado County | — | — |
| Jt Custom Construction INC | Jonathan Andrew Sellers | — | (951) 816 9004 | GC, remodel, ADU | El Dorado Hills · El Dorado County | — | — |
| Jtl General Contractors INC | Eric Arthur Kirk | — | (530) 558 5934 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| Jts Property Management | Jts Property Management | info@jtspropertymanagement.com | (916) 534-7642 | Property managers | Fair Oaks · El Dorado County | — | — |
| Juan Uribe Pulido Construction | Uribe Pulido Juan | — | (530) 318 9277 | GC, remodel, ADU | South Lake Tahoe · El Dorado County | — | — |
| Justin Anderson | Justin Anderson | — | (916) 281 5497 | GC, remodel, ADU | El Dorado Hills · El Dorado County | — | — |
| Justin Mcintyre Construction | Justin Martin Mcintyre | — | (530) 318 2482 | GC, remodel, ADU | South Lake Tahoe · El Dorado County | — | — |
| K & C Waltner Construction | Kelly Allen Waltner | — | (530) 409 4129 | GC, remodel, ADU | El Dorado · El Dorado County | — | — |
| K & K Services | Kenneth James Curtzwiler | — | (530) 577 5678 | Other roofers | South Lake Tahoe · El Dorado County | — | — |
| K & L Crawford INC DBA Dick's Carpet Outlet / Carpet One | Jared Elias Sattler | — | (530) 642 4200 | Other | Diamond Springs · El Dorado County | — | — |
| K & S Builders | K & S Builders | — | (650) 255 6347 | Electricians | Shingle Springs · El Dorado County | — | — |
| K A S Engineering LLC | Kyle Matthew Skinner | — | (530) 363 5787 | Other | Camino · El Dorado County | — | — |
| K B Painting | K B Painting | — | (916) 289 0526 | Windows, patio, painters | Placerville · El Dorado County | — | — |
| K D Alliance Construction | Kenneth Frank Chapman | — | (530) 320 0704 | GC, remodel, ADU | Somerset · El Dorado County | — | — |
| K D Builders | K D Builders | — | (530) 318 1638 | GC, remodel, ADU | South Lake Tahoe · El Dorado County | — | — |
| K J C Construction | Kenneth Joseph Curran | — | (916) 247 1885 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| K L Young Construction | David Kirk Young | — | (916) 208 3621 | GC, remodel, ADU | Lotus · El Dorado County | — | — |
| K Luce Construction | Kevin Byron Luce | — | (530) 363 4224 | GC, remodel, ADU | Cameron Park · El Dorado County | — | — |
| K N C Construction | Kenneth James Young | — | (916) 397 9762 | GC, remodel, ADU | Garden Valley · El Dorado County | — | — |
| K T Chapman Construction | Kevin Thomas Chapman | — | (916) 716 1330 | GC, remodel, ADU | Somerset · El Dorado County | — | — |
| K2 Masonry INC | Michael George Kleary | — | (916) 990 8687 | Other | El Dorado Hills · El Dorado County | — | — |
| Kahm Renovations | Kahm Renovations | contact@sansoxygen.com | (650) 393 9133 | GC, remodel, ADU | Pollock Pines · El Dorado County | — | — |
| Kalifornia Fire Alarm & Signal INC | Rodney Edmond Paschke | — | (530) 681 1099 | Electricians | Shingle Springs · El Dorado County | — | — |
| Kamico Development Corporation | Kamiar Mansourian | — | (916) 780 5400 | GC, remodel, ADU | El Dorado Hills · El Dorado County | — | — |
| Kaplan Electric | David Wayne Kaplan | — | (530) 613 1620 | Electricians | Cool · El Dorado County | — | — |
| Karl's Electric | Karl William Schneider | — | (831) 531 7238 | Electricians | South Lake Tahoe · El Dorado County | — | — |
| Kary Danielson Construction | Kary Elwood Danielson | — | (530) 919 0251 | GC, remodel, ADU | Lotus · El Dorado County | — | — |
| Kavanaugh Construction | Kenneth Fredrick Kavanaugh | — | (530) 409 1859 | GC, remodel, ADU | Cameron Park · El Dorado County | — | — |
| Keck And Associates | Raymond Lee Keck | — | (916) 365 6032 | GC, remodel, ADU | Cameron Park · El Dorado County | — | — |
| Keilman Custom Construction | Jesse John Keilman | — | (530) 318 4604 | GC, remodel, ADU | South Lake Tahoe · El Dorado County | — | — |
| Keith Foux Construction | Keith Allen Foux | — | (530) 526 3866 | GC, remodel, ADU | Cool · El Dorado County | — | — |
| Keith Gershon Electrical Contracting | Keith David Gershon | — | (510) 569 0285 | Electricians | Placerville · El Dorado County | — | — |
| Keith Kaczmar Painting INC | Keith S Kaczmar | — | (530) 542 6211 | Windows, patio, painters | South Lake Tahoe · El Dorado County | — | — |
| Keith L Wills | Keith L Wills | — | (916) 826 1857 | Other | Shingle Springs · El Dorado County | — | — |
| Keller Construction | Timothy Shawn Keller | resumes@kellerconstruction.com | (530) 957 4302 | GC, remodel, ADU | Somerset · El Dorado County | — | — |
| Kelly P Mack | Kelly P Mack | — | (530) 363 5802 | HVAC | Pollock Pines · El Dorado County | — | — |
| Kelstar Construction | Kelly Brian Osterday | — | (530) 306 2050 | GC, remodel, ADU | Somerset · El Dorado County | — | — |