| Hrc Construction | Greg Scott Hufnagel | — | (530) 953 8444 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Hudson Mechanical INC | Josh Ryan Hudson | — | (530) 365 9400 | HVAC | Anderson · Shasta County | — | — |
| Hue & Cry INC | Katherine Louise Culmer | — | (800) 762 3196 | Electricians | Anderson · Shasta County | — | — |
| Hue & Cry INC | William Carlton Jr Culmer | — | (530) 365 0071 | Other | Anderson · Shasta County | — | — |
| Hughes Construction | Donald Alan Hughes | — | (530) 945 3882 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Hunter Construction | Terry Jack Hunter | — | (530) 524 5629 | GC, remodel, ADU | Shasta Lake · Shasta County | — | — |
| Hunter Painting | Hunter Painting | — | (530) 275 1314 | Windows, patio, painters | Shasta Lake · Shasta County | — | — |
| Hunter Roofing | Daniel Paul Hunter | jobs@hunterroofing.net | (530) 206 0698 | Other roofers | Redding · Shasta County | — | — |
| Husa & Sons INC | Michael James Husa | — | (530) 524 8493 | GC, remodel, ADU | Anderson · Shasta County | — | — |
| Husky Pro Painting INC | Estrada Cristobal Cruz | info@huskypropainting.com | (530) 777-6573 | Windows, patio, painters | Redding · Shasta County | — | — |
| Hutchens Construction INC | Bowdie James Hutchens | — | (530) 524 5198 | GC, remodel, ADU | Cottonwood · Shasta County | — | — |
| Hutchins INC | Robert Michael Macdonald | — | (530) 246 4272 | GC, remodel, ADU | Redding · Shasta County | — | — |
| I B E Builders | I B E Builders | — | (415) 726 0502 | GC, remodel, ADU | Castella · Shasta County | — | — |
| I Dig It Construction | Thomas William Tinker | — | (513) 383-9148 | GC, remodel, ADU | Anderson · Shasta County | — | — |
| I E T S | I E T S | — | (530) 945 3633 | Electricians | Burney · Shasta County | — | — |
| Ian Smart Construction | Ian James Smart | — | (530) 356 1848 | GC, remodel, ADU | Shasta Lake · Shasta County | — | — |
| Imperial Development | Joshua Matthew Janeway | — | (530) 945 2960 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Independent Concrete | Independent Concrete | interested@domainmarket.com | (925) 705 3614 | Other | Redding · Shasta County | — | — |
| Independent Structures INC | Julie Lynn Langum | — | (530) 223 5238 | Other | Redding · Shasta County | — | — |
| Infinite Air Heating And Cooling | Infinite Air Heating And Cooling | — | (858) 945 5254 | HVAC | Anderson · Shasta County | — | — |
| Infinity Abatement Services | Joseph Craig Nixt | — | (530) 605 8850 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Infinity Construction | Damen Paul Hawkins | info@infinityconstruction.com | (530) 355 4258 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Infinity Heating And Air | Infinity Heating And Air | — | (530) 205 3818 | HVAC | Cottonwood · Shasta County | — | — |
| Insignia Builders INC | Wallace Jaxon Baker | — | (530) 241 2112 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Inspire Painting INC | Eric James Ortlieb | — | (530) 355 2395 | Windows, patio, painters | Redding · Shasta County | — | — |
| Insulation Ninjas LLC | Max Eugene Morgan | info@indiantypefoundry.com | (530) 782 3421 | Other | Redding · Shasta County | — | — |
| Integrity Heating Air & Solar | Darrin Michael Fellows | — | (530) 365 9100 | HVAC | Anderson · Shasta County | — | — |
| Intermountain Construction | Robert Joseph Drewsen | — | (530) 722 8124 | GC, remodel, ADU | Millville · Shasta County | — | — |
| Iron Horse Construction | Vicki Lynn Harmon | — | (530) 941 2726 | Other | Palo Cedro · Shasta County | — | — |
| Iron Horse Heating & Air INC | Gavin William Lowe | — | (530) 255 6792 | HVAC | Redding · Shasta County | — | — |
| Iron Mountain General Engineering INC | Harold Joseph Westler | — | (530) 246 3993 | Other | Redding · Shasta County | — | — |
| Iron Shield Fire Systems | Iron Shield Fire Systems | — | (530) 276 3372 | Other | Bella Vista · Shasta County | — | — |
| Ironbark Construction | Kurt Joseph Mooney | — | (530) 768 4484 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Isringhausen Paving And Grading | Lane Derick Isringhausen | — | (530) 356 7173 | Other | Anderson · Shasta County | — | — |
| Iznuthin Fabrication And Consulting | Iznuthin Fabrication And Consulting | — | (925) 550 8951 | GC, remodel, ADU | Mc Arthur · Shasta County | — | — |
| J & J Pumps INC | Dolly Bell Hale | — | (530) 222 3393 | Other | Anderson · Shasta County | — | — |
| J & L Williams Painting | Larry Wayne Williams | — | (530) 526 4217 | Windows, patio, painters | Cottonwood · Shasta County | — | — |
| J & T Williams Construction | Timothy Charles Williams | — | (530) 941 5023 | GC, remodel, ADU | Redding · Shasta County | — | — |
| J A R Ventures INC DBA Sign-a-rama | Ashly Lyn Robbins | — | (530) 224 9656 | Other | Redding · Shasta County | — | — |
| J A Sandefur Construction | Cory James Sandefur | — | (805) 746 3346 | GC, remodel, ADU | Palo Cedro · Shasta County | — | — |