For sale Home

Listed Sep 28, 2026

$917,000 Est. $6,065/mo

20506 Old Mill Road Southwest

  • 3

    Beds

  • 3

    Baths

  • 2,143

    Sq ft

The story

Experience a forest sanctuary on Vashon Island’s serene west side. This custom built northwest contemporary home is set on a shy five-acre parcel surrounded by a sunny meadow, lush landscaping, kitchen garden, established orchard, and groomed walking trails through the woods. The well-built home bridges indoor and outdoor spaces with soaring windows and a spacious deck. Enjoy ample living spaces and one bedroom on the main, with another two bedrooms upstairs. The property offers the ultimate maker-space, a magnificent 24’ X 36’ shop building, with attached 24’ X 24’ double-height garage – ready for an artist, wood-worker, or business-owner. The gated entry, cross-fencing, and fenced animal shelter are ready for your hobby farm or companion pets. There are a few tucked away, secret flex spaces - think offices or studio space. A portion of the property is classified as Open Space - a property tax benefit - and is served by an excellent two-party water system. Privacy, space for everyone and all their projects – your new home!

Facts & features

Home type

Home

Year built

1983

Lot size

5 acres

Price per sq ft

$428

Included features

  • Fireplace

    1 fireplace

  • Cooling

    Wall Unit(s)

  • Heating

    Stove/Free Standing, Wall Furnace

  • Appliances

    Dishwasher, Dryer, Refrigerator, Stove(s)/Range(s), Washer

  • Flooring

    Ceramic Tile, Hardwood, Vinyl, Carpet

  • Roof

    Composition

  • Lot Information

    Open Space, Secluded

  • Exterior

    Wood, Dog Run

  • Water Source

    Shared Well

  • Sewer

    Septic Tank

Mortgage calculator

Estimated monthly payment

$6,065 /mo

7% rate · 30-yr fixed · 20% down

  • Principal & interest $4,881
  • Property tax $917
  • Insurance $267

Includes principal, interest, taxes & insurance.

Your Property Journey

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Listing Broker

Windermere Vashon

Broker Name

Windermere Vashon

Agent

Mary Margaret Briggs