| 5K Builder | 5K Builder | — | (707) 327 7613 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| 707 Construction | Ozzie Blondell Bushway | — | (707) 513 5340 | GC, remodel, ADU | Willits · Mendocino County | — | — |
| 8lct Construction Co | Luong Tai Chi | — | (415) 823 8800 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| A B Construction | Bermudez Garcia Alejandro | — | (707) 813 2737 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| A K Lewis Construction Co | Aaron Lewis Katz | — | (707) 357 5674 | GC, remodel, ADU | Elk · Mendocino County | — | — |
| A N G Construction INC | Arthur Nathaniel George | — | (707) 964 1565 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| A P Guerra Construction | Adrian Perez Guerra | — | (707) 367 8214 | GC, remodel, ADU | Willits · Mendocino County | — | — |
| A R Craftworks | A R Craftworks | — | (925) 200 5068 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| A T W Construction | Andrew Tristan Wattenburger | — | (707) 972 7797 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| Aaron Construction | Aaron Keith Luedemann | interested@domainmarket.com | (707) 489 0296 | GC, remodel, ADU | Willits · Mendocino County | — | — |
| Aaron D Dixon General Contracting | Aaron Daniel Dixon | — | (707) 234 9105 | GC, remodel, ADU | Sea Ranch · Mendocino County | — | — |
| Aaron Kirby Construction | Aaron Mitchell Kirby | — | (707) 972 3679 | GC, remodel, ADU | Gualala · Mendocino County | — | — |
| Aaron Scovill | Aaron Scovill | — | (707) 357 4173 | GC, remodel, ADU | Mendocino · Mendocino County | — | — |
| Aban C Construction INC | Marco David Aban | — | (707) 272 8793 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| Aguilar Built | Aguilar Built | — | (707) 354 8242 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| Ajp Construction | Alden Justin Perry | — | (707) 272 5241 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| Al's Construction | Camacho Aldo | — | (707) 272 0885 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| Alejandro U Huerta | Alejandro U Huerta | — | (707) 357 0483 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| All Around Construction | David Allen Carroll | info@allaroundconstruction.com | (732) 280-6530 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| Allred | Timothy Charles Allred | — | (707) 485 0436 | GC, remodel, ADU | Redwood Valley · Mendocino County | — | — |
| Alvarez Construction | Alvarez Francisco | — | (707) 489 3158 | GC, remodel, ADU | Talmage · Mendocino County | — | — |
| Amaral Construction | Dustin Lee Amaral | — | (707) 972 7560 | GC, remodel, ADU | Gualala · Mendocino County | — | — |
| American Manufactured Homes Sales INC | Rodney Donald Usher | — | (707) 462 5000 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| Animal Construction INC | Prometheus Gene Glover | team@latofonts.com | (707) 354 2055 | GC, remodel, ADU | Point Arena · Mendocino County | — | — |
| Arcbishop Construction INC | Brian Michael Bishop | — | (707) 391 2731 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| Arntz And Son | James Richard Arntz | — | (707) 217 5449 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| Artcraft Construction | Walter Anthony Von Fricken | — | (415) 260 2424 | GC, remodel, ADU | Willits · Mendocino County | — | — |
| Artstruct | Yorgen Quent Kvinsland | — | (707) 937 6242 | GC, remodel, ADU | Mendocino · Mendocino County | — | — |
| Aum Construction INC | Ishvi Benzvi Aum | info@aumconstruction.com | (925) 322 3760 | GC, remodel, ADU | Mendocino · Mendocino County | — | — |
| B & B Excavation & Drilling | Beau Gregory Brown | bandbexcavate@gmail.com | (707) 485 7545 | GC, remodel, ADU | Redwood Valley · Mendocino County | — | — |
| B B & B Builders INC | Robert Nicholas Buckle | — | (415) 602 2133 | GC, remodel, ADU | Mendocino · Mendocino County | — | — |
| B I Gonzalez Construction INC | Benjamin Israel Gonzalez | — | (707) 357 2500 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| B T K Builders | B T K Builders | — | (707) 696 9637 | GC, remodel, ADU | Redwood Valley · Mendocino County | — | — |
| Baarsch Construction | Brian Richard Baarsch | — | (707) 462 7892 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| Baguley Builders | Baguley Builders | — | (707) 322 3519 | GC, remodel, ADU | Hopland · Mendocino County | — | — |
| Baughn And Cameron | Rodney Donald Usher | — | (707) 462 5000 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| Bazzani Construction Solutions Co | Scott Paul Bazzani | — | (707) 272 7346 | GC, remodel, ADU | Ukiah · Mendocino County | — | — |
| Beebe Built Construction INC | Christopher James Beebe | — | (707) 354 4805 | GC, remodel, ADU | Willits · Mendocino County | — | — |
| Big Fish Construction INC | Adrian Christopher Fisher | — | (707) 651 1253 | GC, remodel, ADU | Willits · Mendocino County | — | — |
| Black Sheep Builder | Black Sheep Builder | — | (562) 587 7255 | GC, remodel, ADU | Hopland · Mendocino County | — | — |