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20506 Old Mill Road SW, Vashon WA 98070
20506 Old Mill Road SW, Vashon WA 98070
Washington>King County>Vashon

20506 Old Mill Road SWVashon, WA 98070

For Sale

$917,000

Smart Buyer Rebate $9,170

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!

Listed by Mary Margaret Briggs

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Windermere Vashon

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206-276-2158

Last updated October 15, 2026

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Source: NWMLS #2587996

Listing Facts

  • TypeSingle-family
  • NeighborhoodVashon
  • Bedrooms3
  • Bathrooms3
  • Days on Prevu33
  • Taxes$6,394/year
  • Size2,143 sqft
  • Price per sqft$428

Amenities

  • Dishwasher
  • Washer/Dryer
  • Pets Allowed
  • Parking

Location

Mortgage Calculator

Listing History

09/28/2026
Listed by Windermere Vashon
$917,000
  1. 09/28/2026$917,000
    Listed by Windermere Vashon

Property Details for 20506 Old Mill Road SW

Exterior

Construction

  • Property Condition: Good
  • Roof: Composition
  • Structure Type: House
  • Year Built: 1983
  • Architectural Style: Contemporary
  • Construction Materials: Wood
  • Entry Location: Main
  • Exterior Features: Wood

Features

  • Direction Faces: West
  • View: Territorial

Measurements

  • Building Area Total: 2,143
  • Building Area Units: Square Feet
  • Lot Features: Open Space, Secluded
  • Lot Size Acres: 4.72
  • Lot Size Square Feet: 205,603
  • Lot Size Units: Square Feet

Financial

Taxes

  • Parcel Number: 0122029051
  • Tax Annual Amount: $6,394.00
  • Tax Year: 2026

Interior

Features

  • Appliances: Dishwasher, Dryer, Refrigerator, Stove(s)/Range(s), Washer
  • Fireplace Features: Gas
  • Fireplace: Yes
  • Fireplaces Total: 1
  • Flooring: Ceramic Tile, Hardwood, Vinyl, Carpet
  • Interior Features: Ceiling Fan(s), Dbl Pane/Storm Window, Dining Room, Fireplace, French Doors, Loft, Pantry, Skylight(s), Vaulted Ceiling(s), Water Heater

Measurements

  • Living Area: 2,143

Rooms

  • Bathrooms Full: 2
  • Bathrooms Three Quarter: 1
  • Bathrooms Total Integer: 3
  • Bedrooms Total: 3
  • Main Level Bathrooms: 1
  • Main Level Bedrooms: 1

Other

Location

  • Subdivision Name: Westside

Parking

Parking

  • Attached Garage: Yes
  • Carport: Yes
  • Covered Spaces: 4
  • Garage: Yes
  • Parking Features: Attached Carport, Attached Garage, Detached Garage
  • Parking Total: 4

Schools

Elementary School

  • Elementary School: Chautauqua Elem

High School

  • High School: Vashon Isl High
  • High School District: Vashon Island

Middle or Junior School

  • Middle Or Junior School: Mcmurray Mid

Utilities

Equipment

  • Has Cooling: Yes
  • Has Heating: Yes
  • Sewer: Septic Tank
  • Water Source: Shared Well

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 3 bedrooms and 3 bathrooms in this single-family home at 20506 Old Mill Road SW.

What schools are nearby to 20506 Old Mill Road SW?

Nearby schools include the Chautauqua Elem Elementary School, Mcmurray Mid Middle School, and Vashon Isl High.

Does this single-family home have parking?

Yes, there are 4 parking spaces available for 20506 Old Mill Road SW.

What are the annual taxes for 20506 Old Mill Road SW?

Annual taxes for this single-family home are estimated at $6,394.

How does 20506 Old Mill Road SW compare to other single-family homes in Vashon?

This single-family home is listed 40% below the average price for single-family homes in Vashon and has been on the market for 37 less days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 2,143 sqft.

20506 Old Mill Road SW is a 3-bedroom, 3-bath single-family home for sale in Vashon WA 98070. Available on Prevu for 33 days at $917,000. This property features 2,143 square feet of living space, located in Vashon. The median listing price for single-family homes in this area is $1,185,000. Nearby schools include Chautauqua Elem Elementary School, Mcmurray Mid Middle School, and Vashon Isl High. Additional amenities include dishwasher, pets allowed, parking, and washer/dryer. Browse more single-family home listings in King County.

Based on information from NWMLS and/or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by Prevu or the MLS. Information is provided exclusively for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumer may be interested in purchasing.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.