| High Sierra Electric | Edward Herbert Jr Shepherd | — | (530) 477 0862 | Electricians | Cedar Ridge · Nevada County | — | — |
| High Sierra Home Defense | High Sierra Home Defense | anapbm@gmail.com | (530) 606 0153 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| High Sierra Painting | High Sierra Painting | — | (530) 308 6649 | Windows, patio, painters | Truckee · Nevada County | — | — |
| Highmark Construction | Zachary Gunter Bierwolf | info@highmark.co.ke | (831) 601 9047 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Hilltop Granite | Hilltop Granite | info@hilltopgranite.com | (530) 575 0231 | Other | Penn Valley · Nevada County | — | — |
| Hobbs Construction | Arley Dale Hobbs | — | (530) 613 1005 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Hoffman Engineering & Construction | Robert Craig Hoffman | — | (209) 588 6051 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Holloway Tile | Holloway Tile | — | (916) 768 4648 | Other | Grass Valley · Nevada County | — | — |
| Home Hardening Solutions INC | Conor Stark Farrell | homehardeningsolutions@gmail.com | (530) 648 7058 | Other roofers | Grass Valley · Nevada County | — | — |
| Home Paint Restoration | Home Paint Restoration | — | (530) 386 1459 | Windows, patio, painters | Truckee · Nevada County | — | — |
| Home Sweet Home Remodeling | Home Sweet Home Remodeling | — | (530) 913 7975 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Homecraft Building & Design INC | Brian Alan Foster | — | (530) 432 4663 | GC, remodel, ADU | Penn Valley · Nevada County | — | — |
| Homecraft Cabinet Company | Brian Alan Foster | — | (530) 432 4663 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Homestead Construction Services | Christopher Tilden Johnson | — | (925) 577 2715 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Hometime Windows & Doors | Hometime Windows & Doors | — | (909) 351-5354 | Windows, patio, painters | Redlands · Nevada County | — | — |
| Horizon Construction | Mark Collin Davis | — | (530) 277 6472 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Hostetter Construction | Raymond Wayne Hostetter | — | (504) 570 0775 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Houser General Contractor | Houser General Contractor | — | (530) 575 8880 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Howell Construction | Russell Dean Howell | howellconstr@yahoo.com | (916) 778 7091 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Hs Electric INC | John Robert Hoekman | — | (530) 414 6853 | Electricians | Truckee · Nevada County | — | — |
| Hss Builders | Ronald Lee Hunt | — | (530) 640 2507 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Huck Construction | Gary Jonathan Huck | info@huckconstruction.co.uk | (530) 414 4195 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Ian Robert Nansen General Contractor | Ian Robert Nansen General Contractor | — | (530) 575 9768 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Ian Wolfe | Ian Wolfe | — | (530) 913 2016 | Windows, patio, painters | Nevada City · Nevada County | — | — |
| Icor INC | Toor Arman | — | (530) 557 4002 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| In House Builders LLC | Jude Thomas Gavigan | — | (530) 567 5150 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Independence Drywall & Taping | Independence Drywall & Taping | — | (775) 843 3700 | Other | Truckee · Nevada County | — | — |
| Ingenuity Construction | Derrick Shawn Gillespie | — | (530) 575 2550 | GC, remodel, ADU | Penn Valley · Nevada County | — | — |
| Inmotion Mechanical INC | Chad James Bogan | — | (530) 210 2275 | HVAC | Truckee · Nevada County | — | — |
| Inner Works | Inner Works | inner_works@outlook.com | (530) 906 6009 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Innovation Builders | Innovation Builders | — | (530) 477 6819 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Integrity Gate Co | Michael Steven Bennett | — | (530) 460 8673 | Other | Grass Valley · Nevada County | — | — |
| Inverted Electric | James Calvin Bond | projects@invertedelectric.com | (530) 804-5441 | Electricians | Penn Valley · Nevada County | — | — |
| Ironman Metalworks | Ironman Metalworks | — | (530) 559 4200 | Other | Grass Valley · Nevada County | — | — |
| Island Moon Construction INC | Gary Keith Mc Daniels | — | (916) 612 8943 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Ivan's Plumbing & Drain | Ivan's Plumbing & Drain | — | (530) 575 1500 | Other | Grass Valley · Nevada County | — | — |
| Ivanhoe Excavating | Ivanhoe Excavating | — | (530) 412 0017 | Other | Truckee · Nevada County | — | — |
| Ivy Plumbing | Ivy Plumbing | — | (530) 575 2857 | Other | Cedar Ridge · Nevada County | — | — |
| J 530 Concrete | Cruz Jesus Sosa | — | (530) 263 1232 | Other | Grass Valley · Nevada County | — | — |
| J A C Window Covering Installation | Justin Allen Constable | — | (530) 446 1451 | Other | Penn Valley · Nevada County | — | — |