| Jones Family Tree Service LLC | Florentina Marie Jones | — | (707) 878 7337 | Tree | Salyer · Trinity County | — | — |
| Jw Parks Company | Johnathon Willard Parks | — | (530) 515 0140 | Other | Weaverville · Trinity County | — | — |
| K.t.c. | Kim Arthur Thornbury | — | (530) 410 4388 | GC, remodel, ADU | Lewiston · Trinity County | — | — |
| Ken Herrett Excavating | Ken Herrett Excavating | — | (530) 623 7199 | Other | Weaverville · Trinity County | — | — |
| Kepharts Custom Cuts Tree Service | Isaak Michael Kephart | — | (530) 515 4036 | Tree | Hayfork · Trinity County | — | — |
| Kiser Construction | Kyle Eric Kiser | — | (707) 834 3780 | Other | Mad River · Trinity County | — | — |
| Km Concrete & Construction INC | Kevin Ronald Maelfeyt | — | (530) 739 2952 | GC, remodel, ADU | Weaverville · Trinity County | — | — |
| Kurt Lingemann Well Drilling | Kurt Lingemann Well Drilling | — | (530) 623 9355 | Other | Junction City · Trinity County | — | — |
| Lance Graham | Lance Graham | — | (530) 623 0342 | GC, remodel, ADU | Weaverville · Trinity County | — | — |
| Lane Garrett Kennard | Lane Garrett Kennard | — | (707) 672 2076 | GC, remodel, ADU | Trinity Center · Trinity County | — | — |
| Larry Pape | Larry Pape | — | (530) 623 4137 | GC, remodel, ADU | Douglas City · Trinity County | — | — |
| Lars Fredrickson Construction | Lars Eric Jr Fredrickson | — | (530) 623 5199 | GC, remodel, ADU | Douglas City · Trinity County | — | — |
| M & M Commercial & Residential | Bradley James Mc Adam | — | (650) 619 9128 | GC, remodel, ADU | Weaverville · Trinity County | — | — |
| Mark A Kneaper DBA Kneaper Electric | Mark Allen Kneaper | — | (707) 499 7389 | Electricians | Trinity Center · Trinity County | — | — |
| Mc Cullough Const | Mc Cullough Const | — | (530) 356 8380 | GC, remodel, ADU | Douglas City · Trinity County | — | — |
| Mccampbell | Bruce Leroy Mc Campbell | main@mccampbell.com | (408) 489 3528 | GC, remodel, ADU | Weaverville · Trinity County | — | — |
| Mcclurg Flooring LLC | Ryan Huntington Mcclurg | — | (707) 498 3701 | Other | Salyer · Trinity County | — | — |
| Michael Snyder | Michael Snyder | contact@michaelsnyder.com | (816) 565 1311 | Electricians | Weaverville · Trinity County | — | — |
| Miller Excavation | Miller Excavation | — | (530) 623 6515 | Other | Weaverville · Trinity County | — | — |
| Molyneux Construction | Jonathan Buckminster Molyneux | — | (530) 515 0447 | GC, remodel, ADU | Weaverville · Trinity County | — | — |
| Morning Wood Tree Service LLC | Bradley Richard Berglund | — | (530) 739 2079 | Other | Trinity Center · Trinity County | — | — |
| Morris Refrigeration | Morris Refrigeration | — | (530) 623 5130 | HVAC | Junction City · Trinity County | — | — |
| Neff Plumbing LLC | Justin Thomas Neff | — | (530) 209 5693 | Other | Weaverville · Trinity County | — | — |
| Nor-cal Custom House Painting | Nor-cal Custom House Painting | — | (530) 739 2800 | Windows, patio, painters | Weaverville · Trinity County | — | — |
| North Fork Construction | Stephen Edward Lyon | — | (530) 339 5941 | GC, remodel, ADU | Junction City · Trinity County | — | — |
| North State Painting | North State Painting | — | (530) 778 3968 | GC, remodel, ADU | Douglas City · Trinity County | — | — |
| Northern State Steel LLC | Paul Joseph Piker | info@northernstatesteel.com | (530) 623 4033 | GC, remodel, ADU | Weaverville · Trinity County | — | — |
| Pacific Dream Woodworking | Pacific Dream Woodworking | — | (530) 803 9663 | Other | Trinity Center · Trinity County | — | — |
| Paul E Scribner Construction INC | Paul Eugene Scribner | — | (530) 623 4840 | GC, remodel, ADU | Weaverville · Trinity County | — | — |
| Phillips Construction | Shea Monroe Phillips | — | (925) 584 9851 | GC, remodel, ADU | Junction City · Trinity County | — | — |
| Plumbing Plus Construction Services INC | Stuart Alexander Drake | — | (530) 623 9334 | GC, remodel, ADU | Weaverville · Trinity County | — | — |
| Professional Building Consultants | Professional Building Consultants | — | (530) 410 4821 | GC, remodel, ADU | Lewiston · Trinity County | — | — |
| R D Thompson Construction | Robert David Thompson | — | (530) 739 0439 | GC, remodel, ADU | Lewiston · Trinity County | — | — |
| Randy D Spencer | Randy D Spencer | — | (530) 266 3227 | GC, remodel, ADU | Trinity Center · Trinity County | — | — |
| Red Hill Construction | Michael Albert Mc Laughlin | — | (530) 262 3676 | GC, remodel, ADU | Junction City · Trinity County | — | — |
| Ritchie Construction | Darrell Toy Ritchie | — | (530) 778 3888 | Other | Lewiston · Trinity County | — | — |
| Rob Barcellona Construction | Robert Vincent Barcellona | — | (530) 604 7572 | GC, remodel, ADU | Douglas City · Trinity County | — | — |
| Robert C Buck DBA Kelly's Pool Service | Robert Carl Buck | — | (408) 981 2650 | Pool | Douglas City · Trinity County | — | — |
| Roger Smith Plumbing | Roger Smith Plumbing | — | (530) 623 6230 | GC, remodel, ADU | Weaverville · Trinity County | — | — |
| Ron Fisher DBA Ron Fisher Construction | Ronald Joe Fisher | — | (530) 739 3864 | GC, remodel, ADU | Weaverville · Trinity County | — | — |