| 3 - D Construction | Kent Allen Douglas | — | (650) 464 7961 | GC, remodel, ADU | Lake Almanor · Lassen County | — | — |
| Abbott Construction | Renn Opinion Abbott | — | (530) 310 3967 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Almanors Preferred Builder | Almanors Preferred Builder | — | (530) 375 0658 | GC, remodel, ADU | Westwood · Lassen County | — | — |
| An Construction | An Construction | — | (818) 458-7671 | GC, remodel, ADU | Chatsworth · Lassen County | — | — |
| Beckman Construction | William Edward Beckman | — | (530) 260 3370 | GC, remodel, ADU | Westwood · Lassen County | — | — |
| C E Dore Construction | Christopher Emile Dore | — | (530) 258 1555 | GC, remodel, ADU | Westwood · Lassen County | — | — |
| Chris Layne Construction | Christopher Lee Layne | — | (530) 310 4009 | GC, remodel, ADU | Doyle · Lassen County | — | — |
| Clement Construction | William Karl Clement | — | (530) 375 7033 | GC, remodel, ADU | Westwood · Lassen County | — | — |
| Colbert And Son | Colbert And Son | — | (530) 253 2181 | GC, remodel, ADU | Janesville · Lassen County | — | — |
| Cornerstone Building INC | Joshua Michael Shihadeh | — | (530) 249 9094 | GC, remodel, ADU | Janesville · Lassen County | — | — |
| Crazy J's Concrete INC | Juan Jose Jimenez | crazyjsconcrete@gmail.com | (530) 257 9681 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Dalina Construction | Dalina Construction | — | (818) 266-9390 | GC, remodel, ADU | Chatsworth · Lassen County | — | — |
| Darren Kirack Construction Company | Darren Shayne Kirack | — | (530) 251 0282 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Dcb Building Structures | Dcb Building Structures | — | (530) 375 7400 | GC, remodel, ADU | Westwood · Lassen County | — | — |
| Delucchi Construction | Nicholas William Delucchi | — | (530) 816 0240 | GC, remodel, ADU | Lake Almanor · Lassen County | — | — |
| Delucchi Construction | Trevor William Delucchi | — | (530) 816 0240 | GC, remodel, ADU | Lake Almanor · Lassen County | — | — |
| Diamond Brother's Construction LLC | Tyler Steven Diamond | — | (530) 260 8834 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Durkin Home Construction | David William Durkin | — | (530) 519 2683 | GC, remodel, ADU | Lake Almanor · Lassen County | — | — |
| Dutra Construction | Robert Charles Dutra | — | (530) 310 2169 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Eagle Lake Construction | John David Le Roy | — | (530) 825 3351 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Elite Construction | Michael Andrew Shively | info@eliteconstruction.ca | (530) 251 7134 | GC, remodel, ADU | Janesville · Lassen County | — | — |
| Estabrook Construction | Luke Ronald Estabrook | — | (775) 997 9336 | GC, remodel, ADU | Standish · Lassen County | — | — |
| Estabrook Construction | Zachary William Estabrook | — | (775) 997 5928 | GC, remodel, ADU | Standish · Lassen County | — | — |
| Eugene Wilder Construction | Eugene Howard Wilder | — | (530) 260 3048 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Faytak Construction | Tyrone Edward Faytak | — | (530) 260 6507 | GC, remodel, ADU | Janesville · Lassen County | — | — |
| Frontier Builders | Jonathan Jay Nissley | — | (530) 520 6667 | GC, remodel, ADU | Janesville · Lassen County | — | — |
| Gold Run Construction | Clayton Dean Gunderson | — | (530) 310 2012 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Greg Lopez Construction INC | Lopez Gregory | greglopez2019@gmail.com | (530) 596 4111 | GC, remodel, ADU | Lake Almanor · Lassen County | — | — |
| Halverson Construction | Edward Lynn Halverson | — | (530) 310 4561 | GC, remodel, ADU | Lake Almanor · Lassen County | — | — |
| Horsley Construction Co | Daron Scott Horsley | — | (530) 310 5555 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| J & J Builders L.l.c. | Jason Allen Wattenburg | — | (530) 249 6132 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Jade Construction | Guy Lewis Shively | — | (530) 816 2596 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Jesse Rettig Construction | Jesse Frederick Rettig | — | (925) 964 3050 | GC, remodel, ADU | Westwood · Lassen County | — | — |
| Jmh Construction Services INC | John Michael Henneman | — | (530) 263 1706 | GC, remodel, ADU | Janesville · Lassen County | — | — |
| John J Valentich Construction | John James Valentich | — | (530) 310 1096 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Jon Rolland | Jon Rolland | — | (530) 252 4783 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Kellogg Construction | Timothy Robert Kellogg | info@kellogg-construction.com | (530) 253 2209 | GC, remodel, ADU | Janesville · Lassen County | — | — |
| Kenneth Johnston Construction Company | Kenneth Alexander Johnston | — | (530) 249 6070 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Kent House Construction | Kent Frank House | — | (530) 524 6695 | GC, remodel, ADU | Bieber · Lassen County | — | — |
| Krause Construction | Jeffrey Scott Krause | — | (916) 743 8078 | GC, remodel, ADU | Janesville · Lassen County | — | — |