| Hydro Fire Protection INC | Ray Sack Mccaw | interested@domainmarket.com | (530) 307 8726 | Other | South Lake Tahoe · El Dorado County | — | — |
| Hydro Pure Pool & Spa Service | Shawn Michael Panico | — | (916) 201 6245 | Pool | Rescue · El Dorado County | — | — |
| I C M Mechanical INC | Dwayne Lamont Mercer | — | (530) 676 5567 | HVAC | Shingle Springs · El Dorado County | — | — |
| Ian O'brien-regan Construction | Ian Joseph O'brien-regan | — | (530) 545 0633 | GC, remodel, ADU | South Lake Tahoe · El Dorado County | — | — |
| Icon Tile | Icon Tile | — | (530) 613 2104 | Other | Cameron Park · El Dorado County | — | — |
| Ideal Electric | Ideal Electric | — | (833) 861-1622 | Electricians | San Marcos · El Dorado County | — | — |
| Imagine Property Management Services | Imagine Property Management Services | — | (916) 580-3833 | Property managers | El Dorado Hills · El Dorado County | — | — |
| Imboden's Electric | Jeffery Wayne Imboden | — | (530) 957 3322 | Electricians | Rescue · El Dorado County | — | — |
| Imperial Construction | Stephen Nicolas Lubich | — | (408) 242 6371 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| In Depth Pool Service LLC | Phillip John George Lauterbach | — | (916) 833 3710 | Pool | El Dorado Hills · El Dorado County | — | — |
| Independent Tile & Stone | Independent Tile & Stone | — | (530) 545 2027 | Other | South Lake Tahoe · El Dorado County | — | — |
| Indian Creek Construction | Perry Edward Keys | — | (916) 719 0255 | GC, remodel, ADU | Pilot Hill · El Dorado County | — | — |
| Infinity Construction | Infinity Construction | — | (951) 678-7620 | GC, remodel, ADU | Temecula · El Dorado County | — | — |
| Innerstate Electric | Darrell Lynn Harlan | — | (916) 804 9587 | Electricians | Placerville · El Dorado County | — | — |
| Innovative Electric | Robert Jon Wirth | — | (530) 600 4244 | Electricians | South Lake Tahoe · El Dorado County | — | — |
| Innovative Improvement Construction | Craig Stephen Munier | — | (530) 647 0708 | GC, remodel, ADU | Pollock Pines · El Dorado County | — | — |
| Installations | Mark Alan Sallee | — | (916) 218 2464 | Other | Placerville · El Dorado County | — | — |
| Insulation Specialist | Insulation Specialist | — | (530) 401 3779 | Other | Kelsey · El Dorado County | — | — |
| Integrated Builders Group INC | Patrick John Sende | — | (916) 933 8401 | GC, remodel, ADU | El Dorado Hills · El Dorado County | — | — |
| Integrated Metal Framing And Drywall INC | Michael Lee Hill | — | (530) 677 2921 | Other | Shingle Springs · El Dorado County | — | — |
| Integrity Locksmith & Safe INC | Dustin Glenn Wiemeyer | — | (530) 544 2363 | Other | South Lake Tahoe · El Dorado County | — | — |
| Integrity Tile And Stone | Integrity Tile And Stone | — | (530) 409 3332 | Other | Cameron Park · El Dorado County | — | — |
| Intelligent Building Maintenance Construction | Chris Alan Grismer | — | (916) 847 1460 | GC, remodel, ADU | El Dorado Hills · El Dorado County | — | — |
| International Endeavors LLC | Vasily Petrovich Kurilyak | interested@domainmarket.com | (417) 861 0886 | GC, remodel, ADU | Cameron Park · El Dorado County | — | — |
| Iron Mountain Construction & Electrical INC | Jeramy Wayne Henrich | — | (408) 667 2678 | Electricians | Pollock Pines · El Dorado County | — | — |
| Iron Mountain Fire Protection INC | Galen Franklin Hobart | — | (916) 661 6700 | Other | Shingle Springs · El Dorado County | — | — |
| Irrigation Unlimited | Irrigation Unlimited | — | (916) 769 3177 | Windows, patio, painters | Diamond Springs · El Dorado County | — | — |
| Island Excavation INC | Jesse Kaimiainakam Kaimikaua | — | (530) 416 0656 | Other | South Lake Tahoe · El Dorado County | — | — |
| Ison Tile Company | Stephen Lynn Ison | — | (916) 801 8560 | Other | El Dorado Hills · El Dorado County | — | — |
| Ivazes Construction | Andy Jr Ivazes | — | (650) 787 6717 | GC, remodel, ADU | El Dorado Hills · El Dorado County | — | — |
| J & A Pino Construction | Pino Jason | — | (916) 770 0107 | GC, remodel, ADU | Shingle Springs · El Dorado County | — | — |
| J & J Painting Services | James Walter Holum | — | (916) 521 4640 | Windows, patio, painters | Somerset · El Dorado County | — | — |
| J A G Builders INC | Jayson Joel Grodzienski | — | (818) 321 1220 | GC, remodel, ADU | South Lake Tahoe · El Dorado County | — | — |
| J A Snyder Pacific West INC | Jeffery Alan Snyder | — | (530) 642 4285 | Windows, patio, painters | Coloma · El Dorado County | — | — |
| J And D Maintenance INC DBA Progressive Landscapes Maintenance | Donald Lee Jr Devorss | — | (916) 532 9274 | Windows, patio, painters | El Dorado Hills · El Dorado County | — | — |
| J B T Homes | James Bernard Timms | — | (916) 792 5530 | GC, remodel, ADU | El Dorado Hills · El Dorado County | — | — |
| J B Teie INC DBA South Fork Construction | Jeff Alton Teie | — | (530) 306 9732 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| J C Construction & Engineering INC | Joshua Allen Whitlock | — | (530) 308 8677 | Other | Shingle Springs · El Dorado County | — | — |
| J D Electric | D'amato Jesse | — | (916) 370 4280 | Electricians | Shingle Springs · El Dorado County | — | — |
| J D M Annual Fire & Safety | Ravi Nandan Sanwal | — | (916) 933 8828 | Other | El Dorado Hills · El Dorado County | — | — |