| Wildwood Pacific INC | Robert Carlyle Brown | — | (530) 624 5442 | GC, remodel, ADU | Granite Bay · Placer County | — | — |
| Wilkie Masonry INC | Brian Kenneth Wilkie | — | (916) 652 0118 | Other | Loomis · Placer County | — | — |
| Wilkins Construction | Jeremy Scott Wilkins | mike@wilkins-construction.com | (530) 416 1087 | GC, remodel, ADU | Tahoe City · Placer County | — | — |
| Willco Builders | Willco Builders | — | (530) 613 8218 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Willgrow Incorporated DBA Commercial Entry Service | Thomas Edward Sr Stanton | — | (530) 444 0876 | Other | Meadow Vista · Placer County | — | — |
| William Allen Godwin | William Allen Godwin | — | (530) 367 3512 | Electricians | Foresthill · Placer County | — | — |
| William Art Rienhardt | William Art Rienhardt | — | (707) 257 1569 | GC, remodel, ADU | Lincoln · Placer County | — | — |
| William Baker Construction LLC | William Patrick Baker | — | (530) 320 7291 | GC, remodel, ADU | Colfax · Placer County | — | — |
| William F Stack | William F Stack | — | (530) 401 1345 | GC, remodel, ADU | Auburn · Placer County | — | — |
| William G Tice | William G Tice | — | (916) 759 7361 | Windows, patio, painters | Granite Bay · Placer County | — | — |
| William Kahn Construction | William Lloyd Kahn | — | (408) 655 0576 | GC, remodel, ADU | Auburn · Placer County | — | — |
| William P Lundgren | William P Lundgren | — | (916) 508 8779 | Electricians | Auburn · Placer County | — | — |
| William Tatum | William Tatum | — | (530) 320 8765 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Williams Construction | John Daniel Williams | — | (916) 838 5646 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Williams Lifetime Builders | Steven Eric Williams | — | (530) 320 9007 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Williamson Boat Lift INC | James Mark Williamson | — | (530) 583 2998 | Other | Tahoe City · Placer County | — | — |
| Willis Excavating | Willis Excavating | — | (530) 305 8678 | Other | Colfax · Placer County | — | — |
| Wilson Construction Co | Denny Ray Wilson | contact@wilsonconstructionco.com | (916) 903 2612 | GC, remodel, ADU | Loomis · Placer County | — | — |
| Wilson Construction Company | Charles Delbert Jr Wilson | — | (530) 277 6644 | GC, remodel, ADU | Alta · Placer County | — | — |
| Window I D Cover | Leonid Lenny Mateush | — | (916) 519 4732 | GC, remodel, ADU | Lincoln · Placer County | — | — |
| Windows Avenue INC | Maksim Sarokin | windowsavenue@yahoo.com | (916) 949 6141 | Windows, patio, painters | Roseville · Placer County | — | — |
| Winfield - Hoffmann | Winfield - Hoffmann | — | (916) 223 5942 | GC, remodel, ADU | Newcastle · Placer County | — | — |
| Wire Pros Low Voltage Systems INC | Brian Joseph Brown | — | (530) 362 2422 | Other | Sheridan · Placer County | — | — |
| Witt Construction | Lukas Matthew Witt | — | (916) 520 3205 | GC, remodel, ADU | Rocklin · Placer County | — | — |
| Wittlinger Woodwork And Construction | Peter Price Wittlinger | — | (775) 762 4510 | GC, remodel, ADU | Tahoma · Placer County | — | — |
| Wolf Property Maintenance & Landscape INC | William Gunner Wolf | — | (530) 581 2363 | Windows, patio, painters | Olympic Valley · Placer County | — | — |
| Womack And Associates Fire Protection | Patrick James Womack | — | (562) 508 8470 | Other | Auburn · Placer County | — | — |
| Wood Revivers | Wood Revivers | — | (530) 320 3166 | GC, remodel, ADU | Colfax · Placer County | — | — |
| Woodworks Unlimited | Woodworks Unlimited | — | (530) 210 6755 | Other | Colfax · Placer County | — | — |
| Word-loch Electric | Dorothy Yvonne Yanke | — | (916) 417 0843 | Electricians | Loomis · Placer County | — | — |
| Workman Electric | Richard Lee Workman | — | (530) 392 5663 | Electricians | Auburn · Placer County | — | — |
| Worrell Construction | Paul Bennett Worrell | — | (530) 906 7267 | GC, remodel, ADU | Applegate · Placer County | — | — |
| Wray Landscape Construction | Grady James Wray | — | (916) 425 6669 | Windows, patio, painters | Lincoln · Placer County | — | — |
| Wrb Exteriors INC | Chernetskiy David | david@wrbexteriors.com | (916) 251-9080 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Wright Heating & Air Conditioning | Wright Heating & Air Conditioning | — | (530) 367 4085 | HVAC | Foresthill · Placer County | — | — |
| Wright Roofing | Jason Robert Wright | rob@wrightroofing.com | (916) 342 7971 | Other roofers | Roseville · Placer County | — | — |
| Wsp INC | David Owen Tanner | — | (916) 784 3444 | Other roofers | Granite Bay · Placer County | — | — |
| Wyatt Bowden Construction | Wyatt William Bowden | — | (916) 289 1533 | GC, remodel, ADU | Loomis · Placer County | — | — |
| Wyatt Knotts Construction INC | Wyatt Daniel Knotts | — | (916) 799 9778 | GC, remodel, ADU | Loomis · Placer County | — | — |
| Xbmax INC | Iazydzhian Khachik | — | (818) 699 7853 | GC, remodel, ADU | Roseville · Placer County | — | — |