| B & W Bobcat Services | Brian Eugene Young | — | (530) 227 3924 | Other | Hayfork · Trinity County | — | — |
| Bigfoot Hauling & Demolition | Bigfoot Hauling & Demolition | — | (530) 739 3454 | Other | Douglas City · Trinity County | — | — |
| C & Z Timber Company INC | Zachary James Peltier | — | (707) 498 3906 | Other | Big Bar · Trinity County | — | — |
| Craig Hair Construction | Craig John Jr Hair | — | (570) 227 5449 | Other | Hayfork · Trinity County | — | — |
| Cross Country INC | Christopher Thomas Cross | — | (530) 623 6450 | Other | Douglas City · Trinity County | — | — |
| E B Huff Excavating LLC | Ossie Joseph Iii Balbini | — | (530) 227 1154 | Other | Hayfork · Trinity County | — | — |
| Eagle Rock Incorporated | Sherrie Lea Zappola | — | (530) 623 4444 | Other | Weaverville · Trinity County | — | — |
| Ebm Engineering Construction INC | Erik Brandon Mendes | — | (707) 845 5288 | Other | Mad River · Trinity County | — | — |
| J Elliot Company | Joseph Michael Elliott | — | (209) 256 5353 | Other | Weaverville · Trinity County | — | — |
| Jw Parks Company | Johnathon Willard Parks | — | (530) 515 0140 | Other | Weaverville · Trinity County | — | — |
| Ken Herrett Excavating | Ken Herrett Excavating | — | (530) 623 7199 | Other | Weaverville · Trinity County | — | — |
| Kiser Construction | Kyle Eric Kiser | — | (707) 834 3780 | Other | Mad River · Trinity County | — | — |
| Kurt Lingemann Well Drilling | Kurt Lingemann Well Drilling | — | (530) 623 9355 | Other | Junction City · Trinity County | — | — |
| Mcclurg Flooring LLC | Ryan Huntington Mcclurg | — | (707) 498 3701 | Other | Salyer · Trinity County | — | — |
| Miller Excavation | Miller Excavation | — | (530) 623 6515 | Other | Weaverville · Trinity County | — | — |
| Morning Wood Tree Service LLC | Bradley Richard Berglund | — | (530) 739 2079 | Other | Trinity Center · Trinity County | — | — |
| Neff Plumbing LLC | Justin Thomas Neff | — | (530) 209 5693 | Other | Weaverville · Trinity County | — | — |
| Pacific Dream Woodworking | Pacific Dream Woodworking | — | (530) 803 9663 | Other | Trinity Center · Trinity County | — | — |
| Ritchie Construction | Darrell Toy Ritchie | — | (530) 778 3888 | Other | Lewiston · Trinity County | — | — |
| Shane Brookins Earthmoving | Shane Brookins Earthmoving | — | (530) 515 4308 | Other | Lewiston · Trinity County | — | — |
| Skyline General Engineering | Ossie Joseph Iii Balbini | — | (707) 502 6682 | Other | Hayfork · Trinity County | — | — |
| Storckman Plumbing INC | Robert William Storckman | — | (530) 623 4400 | Other | Weaverville · Trinity County | — | — |
| Trinity Artisan Steel | Kenneth Edward Godfrey | holly@trinityartisansteel.com | (530) 739 9399 | Other | Douglas City · Trinity County | — | — |
| Trinity Plumbing Company | Connor Eugene Roberson | interested@domainmarket.com | (530) 739 8369 | Other | Weaverville · Trinity County | — | — |
| Trinity Pump & Supply | Trinity Pump & Supply | — | (530) 739 3216 | Other | Douglas City · Trinity County | — | — |
| Trinity Woodworks | Trinity Woodworks | — | (530) 778 3292 | Other | Lewiston · Trinity County | — | — |
| Velocity Communications INC | Travis Gordon Finch | interested@domainmarket.com | (530) 623 3550 | Other | Weaverville · Trinity County | — | — |
| Wes Christensen Drywall Repair | Wes Christensen Drywall Repair | — | (530) 778 3522 | Other | Lewiston · Trinity County | — | — |
| Yurok Tribe Construction Corporation | Steven Joseph Reinoehl | — | (707) 572 5251 | Other | Weaverville · Trinity County | — | — |