| Turner Excavating INC | Brian Perry Turner | — | (530) 596 3953 | Other | Lake Almanor · Lassen County | — | — |
| Urionaguena General Construction | Urionaguena Riley | — | (530) 260 2558 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Utopia Property Management | Susanville Ca | Utopia Property Management | Susanville Ca | susanville@utopiamanagement.com | (530) 812-1111 | Property managers | Susanville · Lassen County | — | — |
| Valentine Painting | Valentine Painting | — | (530) 251 3454 | Windows, patio, painters | Susanville · Lassen County | — | — |
| Van Zee Plumbing | Van Zee Plumbing | — | (530) 310 9085 | Other | Janesville · Lassen County | — | — |
| Very Little Construction | Howard Lee Little | — | (775) 391 2728 | GC, remodel, ADU | Doyle · Lassen County | — | — |
| W D Lee Construction | William David Jr Lee | — | (530) 257 7284 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| W J R Construction | William Joseph Rice | — | (530) 249 2501 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| W Z Electric | William James Zinn | — | (530) 260 0539 | Electricians | Litchfield · Lassen County | — | — |
| Walker's Heating & Air | Jeremy Wayne Walker | — | (530) 215 4532 | HVAC | Susanville · Lassen County | — | — |
| Welch Construction | Deanna Joan Welch | — | (530) 816 0976 | Other | Lake Almanor · Lassen County | — | — |
| Wild Construction | Sanchez Diaz Pedro | — | (530) 782 9155 | GC, remodel, ADU | Susanville · Lassen County | — | — |
| Wilder Cabinets | Wilder Cabinets | — | (530) 310 3325 | Other | Susanville · Lassen County | — | — |
| Williams Custom Concrete | Williams Custom Concrete | — | (530) 310 1415 | Other | Susanville · Lassen County | — | — |
| Womack Construction | Brett Lee Womack | — | (530) 596 3364 | GC, remodel, ADU | Lake Almanor · Lassen County | — | — |
| Womack Plumbing | Womack Plumbing | — | (530) 251 4849 | Other | Susanville · Lassen County | — | — |
| Working Enterprises INC | David Daniel Working | — | (530) 258 7777 | GC, remodel, ADU | Lake Almanor · Lassen County | — | — |
| Wynn Concrete | Wynn Concrete | — | (530) 999 8624 | Other | Janesville · Lassen County | — | — |
| Wynn Concrete LLC | Cody Adam Wynn | — | (530) 999 8624 | Other | Janesville · Lassen County | — | — |
| Your H20 Pro | Your H20 Pro | — | (530) 253 3601 | Other | Janesville · Lassen County | — | — |
| Zaengles Furniture And Floor Covering INC | Mark Joseph Zaengle | — | (530) 257 7788 | Other | Susanville · Lassen County | — | — |
| Zamoras Tree Service | Juan Carlos Zamora | — | (530) 257 7097 | Tree | Susanville · Lassen County | — | — |