| Walter Thomas & Associates | Thomas Walter | — | (831) 818 2668 | Other | Hollister · San Benito County | — | — |
| Waste Resource Recovery INC | Robert James Ii Rodriguez | — | (831) 902 5159 | Other | Hollister · San Benito County | — | — |
| West Coast Builders INC | Victor Manuel Frausto Segoviano | — | (831) 537 4212 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| West Valley Security INC | Jason Lee Lucas | — | (408) 590 3341 | Alarm and generators | Hollister · San Benito County | — | — |
| Western Exterminator | Western Exterminator | — | (858) 465-4490 | Pest, tile roofs | San Marcos · San Benito County | — | — |
| Wildleaf Landscape Designs | Pedro Ramirez | — | (831) 207 3038 | Windows, patio, painters | Hollister · San Benito County | — | — |
| Willis Construction Company INC | Lawrence Martin Willis | marketing@willisconstruction.com | (831) 623 2900 | GC, remodel, ADU | San Juan Bautista · San Benito County | — | — |
| Woodall Construction INC | Noah Leslie Woodall | — | (831) 214 2029 | GC, remodel, ADU | San Juan Bautista · San Benito County | — | — |
| Woodcraft Hardwood Floors | Woodcraft Hardwood Floors | bruce@woodcrafthardwoodfloors.com | (408) 887 2262 | Other | Hollister · San Benito County | — | — |
| World Class Concrete | Paul John Freitas | — | (831) 801 7955 | Other | Hollister · San Benito County | — | — |
| Wright Bros Welding & Sheet Metal INC | David Russell Wright | — | (831) 637 2789 | HVAC | Hollister · San Benito County | — | — |
| Wynn Construction Services | Gordon Bert Wynn | — | (831) 801 0022 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Xtreme Tile And Stone Designs | Xtreme Tile And Stone Designs | — | (831) 212 9205 | Other | Hollister · San Benito County | — | — |