| Viking Fences | Viking Fences | — | (209) 588 3957 | Other | Jamestown · Tuolumne County | — | — |
| Vincent Stephen Pryschuk | Vincent Stephen Pryschuk | — | (209) 770 1807 | Other | Twain Harte · Tuolumne County | — | — |
| Vintage Builders Incorporated | Matthew William Clay | — | (209) 533 8416 | GC, remodel, ADU | Sonora · Tuolumne County | — | — |
| Wacker Construction INC | Dallas Dean Smith | — | (209) 324 0238 | GC, remodel, ADU | Sonora · Tuolumne County | — | — |
| Walker's Sierra Plumbing Co INC | Robert Andre Walker | — | (209) 984 4069 | Other | Jamestown · Tuolumne County | — | — |
| Walter Canto | Walter Canto | — | (209) 770 2977 | GC, remodel, ADU | Long Barn · Tuolumne County | — | — |
| Warren Roofing | Matthew Lee Warren | — | (209) 586 3855 | Other roofers | Twain Harte · Tuolumne County | — | — |
| Wayne Waters Plumbing INC | Deborah Lynn Waters | — | (209) 533 1010 | HVAC | Sonora · Tuolumne County | — | — |
| Weller Construction INC | Jeffrey James Weller | — | (209) 532 0686 | GC, remodel, ADU | Columbia · Tuolumne County | — | — |
| Weller's Welding & Fabrication INC | Robert Ogden Weller | bob@wellersweldingfabrication.com | (209) 694 6121 | GC, remodel, ADU | Soulsbyville · Tuolumne County | — | — |
| Wells Tile | Wells Tile | wells@wellstile.com | (209) 962 4369 | Other | Groveland · Tuolumne County | — | — |
| Werner's Plumbing | Werner's Plumbing | wernerphinc@aol.com | (209) 858 8063 | Other | Jamestown · Tuolumne County | — | — |
| Wes - Coast Excavation | Wes - Coast Excavation | — | (209) 743 2397 | Other | Sonora · Tuolumne County | — | — |
| Wes Kolpack Plumbing | Wes Kolpack Plumbing | — | (209) 768 6685 | Other | Sonora · Tuolumne County | — | — |
| West Masonry | West Masonry | — | (209) 559 3508 | Other | Sonora · Tuolumne County | — | — |
| Western Home Maintenance INC | Tommy Wayne Griggs | — | (209) 352 0044 | GC, remodel, ADU | Standard · Tuolumne County | — | — |
| Whitlock Construction | Kevin Brian Whitlock | — | (209) 770 2996 | GC, remodel, ADU | Soulsbyville · Tuolumne County | — | — |
| Wight Construction | Richard Gaylen Wight | — | (209) 962 5907 | GC, remodel, ADU | Big Oak Flat · Tuolumne County | — | — |
| Wilk Construction INC | Wilk Shamariah | — | (209) 743 3687 | GC, remodel, ADU | Twain Harte · Tuolumne County | — | — |
| Wilsons Backhoe | Wilsons Backhoe | — | (209) 532 6012 | Other | Sonora · Tuolumne County | — | — |
| Winters Cleaning And Stove Works INC | James Mervin Winters | — | (209) 970 0536 | Other | Sonora · Tuolumne County | — | — |
| Wire Smith Electric | Zachary Smith Hersom | — | (209) 588 6102 | Electricians | Twain Harte · Tuolumne County | — | — |
| Wivell Homes | Wivell Homes | andrew@wivellhomes.com | (209) 770 4486 | GC, remodel, ADU | Sonora · Tuolumne County | — | — |
| Wonacott Construction Services | Scott P Wonacott | — | (209) 352 5596 | GC, remodel, ADU | Sonora · Tuolumne County | — | — |
| Wunder Wood Construction INC | Jeffrey Michael Wunder | — | (209) 586 5653 | GC, remodel, ADU | Sonora · Tuolumne County | — | — |
| Yard Improvements LLC | Warren David Mainguth | — | (209) 533 8649 | Windows, patio, painters | Soulsbyville · Tuolumne County | — | — |
| Yoav Arielli INC | Guy Morris Samipur | — | (818) 430 3011 | GC, remodel, ADU | Sonora · Tuolumne County | — | — |
| Yosemite Seamless Gutters INC | Adam Dennis Mittelstadt | — | (209) 300 4711 | Other | Mi Wuk Village · Tuolumne County | — | — |
| Zach Awalt Construction INC | Zachariah Evan Awalt | — | (209) 405 0372 | GC, remodel, ADU | Sonora · Tuolumne County | — | — |
| Zach Lemas Construction | Zachary Lowell Lemas | — | (209) 743 8046 | GC, remodel, ADU | Sonora · Tuolumne County | — | — |
| Zack's Sheet Metal | Zack's Sheet Metal | — | (209) 770 0657 | Other | Sonora · Tuolumne County | — | — |
| Zak Sawyer Construction | Zachary Tom Sawyer | — | (209) 535 3938 | GC, remodel, ADU | Columbia · Tuolumne County | — | — |
| Zelinsky Enterprises LLC | Matthew Scott Zelinsky | — | (209) 694 6398 | GC, remodel, ADU | Sonora · Tuolumne County | — | — |
| Zukal Electric INC | Steven Levi Zukal | — | (209) 743 6206 | Electricians | Twain Harte · Tuolumne County | — | — |