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Listed by Mary Margaret Briggs • Windermere Vashon.
FOR SALE

$917,000

Est. $4,895/mo

3 bd•2.75 ba•2,143 sq ft

20506 Old Mill Road Sw, Vashon, WA 98070

• Listed Sep 28, 2026•1 day active · 1 cumulative

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Listing Broker: Windermere Vashon; Mary Margaret Briggs; 206-276-2158; MMBriggs@windermere.com

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Listing Broker: Windermere Vashon; Mary Margaret Briggs; 206-276-2158; MMBriggs@windermere.com

About this home

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!

Property type
Single Family
Year built
1983
Interior
2,143 sq ft
Lot size
4.72 acres
Parking
Attached Carport, Attached Garage, Detached Garage
Price / sq ft
$428
HeatingStove/Free Standing, Wall Furnace
CoolingWall Unit(s)
Property taxes$6,394/yr (est.)
School districtVashon Island

Listed by Mary Margaret Briggs • Windermere Vashon

Listing updated: September 29, 2026 at 11:17am

RexMont checked: moments ago

Source: NWMLS as Distributed by MLS Grid #2587996

Around this home

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20506 Old Mill Road Sw, Vashon, WA 98070

List price
$917,000
Down payment
$183,400

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Source:RexMont analysis of Northwest MLS sales data for this ZIP code plus third-party market data (RentCast). The estimates are RexMont's, not Northwest MLS listing data.

Estimates only and not guaranteed. Consult a RexMont agent for accurate, personalized guidance before making an offer. RexMont OfferEdge™ · © 2026 RexMont Real Estate. Proprietary tool.

Property details

Interior features

  • Ceiling Fan(s)
  • Dbl Pane/Storm Window
  • Dining Room
  • Fireplace
  • French Doors
  • Loft
  • Pantry
  • Skylight(s)
  • Vaulted Ceiling(s)
  • Water Heater
  • Fireplace (gas)
  • None basement

Kitchen

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

Bedrooms

  • 3 bedrooms total

Bathrooms

  • 2 full bathrooms
  • 2 half bathrooms

Flooring

  • Ceramic Tile
  • Hardwood
  • Vinyl
  • Carpet

Heating & cooling

  • Stove/Free Standing heating
  • Wall Furnace heating
  • Wall Unit(s) cooling

Neighborhood mobility

Walk, bike & transit scores

Source: Walk Score®, Bike Score® and Transit Score® are provided by Walk Score (walkscore.com), a third-party service. This is not Northwest MLS listing data.

Schools

Ratings via SchoolDigger

Vashon Island School District

Assigned schools for this property per the listing's MLS data. School district boundaries change — verify the exact assigned schools with the district before purchasing.

Down payment assistance

6 programs may be available to provide you with up to $55,000 in down payment assistance, depending on your specific information.

Source: program list compiled by RexMont from ARCH (A Regional Coalition for Housing) member-jurisdiction information. This is not Northwest MLS listing data.

Mortgage payment forecast

$5,657 per month

Great rate
Principal and interest
Property taxes
HOA dues
Home insurance

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Source: RexMont estimate, not Northwest MLS listing data. Interest rates from Freddie Mac's Primary Mortgage Market Survey via FRED (Federal Reserve Bank of St. Louis). Property tax and HOA dues from the NWMLS listing where provided, otherwise estimated; insurance estimated at 0.3% of price per year.

Estimate only. Actual payment depends on credit, lender, and program. PMI not included for down payments below 20%.

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Listing Broker: Windermere Vashon; Mary Margaret Briggs; 206-276-2158; MMBriggs@windermere.com

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Market pulse

Vashon is a balanced market.

Supply and demand are roughly in balance. Neither side has a clear edge.

Buyer's marketSeller's market
  • Offer insight: Homes typically sell with one offer near asking price.

  • List to sale price: The average home sells very close to list price.

  • Time on market: The average home goes pending in around 77 days.

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Market data from MLS GRID / NWMLS · Updated Sep 2026

MLS GRID Disclaimer

Based on information submitted to the MLS GRID as of September 29, 2026 at 11:17am (date and time MLS GRID Data was obtained). All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

Listing information courtesy of Northwest Multiple Listing Service (NWMLS). The listing data relating to real estate for sale on this web site comes in part from the Northwest Multiple Listing Service. Real estate listings held by brokerage firms other than RexMont Real Estate are marked with the “Listing courtesy of NWMLS” designation. Information provided is for the consumer’s personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

© 2026 Northwest Multiple Listing Service. All rights reserved.

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