20506 Old Mill Road SW Vashon, WA $ 917,000
20506 Old Mill Road SW
$ 917,000
Recently Listed
Open House 10/3 12pm - 2pm
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20506 Old Mill Road SW

Vashon, WA, 98070
$ 917,000
Bedrooms3 Baths3.0 Sq 2,143

Monthly Estimate*

$ 5,790

Listed by Windermere Vashon
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Single Family Home for sale in Vashon, WA

for $917,000 with 3 bedrooms and 3 full baths. This 2,143 square foot home was built in 1983 on a lot size of 4.72.

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!

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Open House

10/3/2026 12:00 PM - 2:00 PM
20506 Old Mill Road SW Vashon, WA
* Some states or local ordinances may prohibit Open Houses at this time, please confirm with your Weichert agent or local rep to confirm

Single Family Active

Price

$ 917,000

Bedrooms

3

Full Bath

3

Property Type

Single Family

Taxes

$ 6,394

Style

Contemporary

Lot Size

4.72

Year Built

1983

Town/City

Vashon

County/Region

King

MLS | Web ID

2587996

Features
General
Living Area 2143
Sewer Septic Tank
Heating Stove/Free Standing Wall Furnace
Cooling Wall Unit(s)
Possession Closing
Roof Composition
Appliances Dishwasher Dryer Refrigerator Stove(s)/Range(s) Washer
HOA Fee 0
Architectural Style Contemporary
Security Features Fully Fenced Security Gate
Year Built 1983
View Territorial
Topography Level
Levels One and One Half
Property Subtype Single Family Residence
Tax Year 2026
County King
New Construction N
Property Type Residential
HOA N
Attached Garage Y
Subdivision Name Westside
Facing Direction West
Garage Y/N Y
Full Baths 2
Special Listing Conditions None
Status Active
Directions From Vashon Hwy west on 204th continuing straight beyond the Jesus Barn Farm. Follow 204th until it veers left continuing on to Old Mill Rd.
High School Vashon Isl High
City Vashon
Entry Location Main
Senior Community Y/N N
High School District Vashon Island
MLS Area 800 - Vashon Island
Lot Size Units Square Feet
Lot Size Square Feet 205603
Carport Y/N Y
Listing Terms Cash Conventional FHA VA Loan
Elementary School Chautauqua Elem
Land Lease Y/N N
Tax Annual Amount 6394
Middle/Junior High School Mcmurray Mid
Property Condition Good
Public Remarks Experience a forest sanctuary on Vashon Islands 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
Structure Type House
Building Area Units Square Feet
Standard Status Active
Water Company Cline Water System - 2 Party Well
Property Style 11 - 1 1/2 Story
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Interior
Interior Amenities Ceiling Fan(s) Dbl Pane/Storm Window Dining Room Fireplace French Doors Loft Pantry Skylight(s) Vaulted Ceiling(s) Water Heater
Basement None
Flooring Ceramic Tile Hardwood Vinyl Carpet
Total Fireplaces 1
Fireplace Features Gas
Air Conditioning Y/N Y
Heating Y/N Y
Fireplace Y/N Y
Half Baths 0
3/4 Baths 1
Total Bedrooms 3
Main Level Bedrooms 1
Total Baths 3
Bedrooms Possible 3
Water Heater Type Electric
Water Heater Location Crawl Space
Fireplaces Main 1
Power Production Type Electric Propane
Baths Three Quarter Garage 1
Baths Three Quarter Lower 0
Baths Three Quarter Main 0
Baths Three Quarter Upper 0
Bedrooms Lower 0
Bedrooms Upper 2
Baths Half Upper 0
Baths Half Main 0
Baths Half Lower 0
Baths Half Garage 0
Baths Full Upper 1
Baths Full Main 1
Baths Full Lower 0
Baths Full Garage 0
Bathrooms 2.75
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Exterior
Exterior Amenities Wood
Vegetation Fruit Trees Garden Space Wooded
Parking Features Attached Carport Attached Garage Detached Garage
Lot Features Open Space Secluded
Water Source Shared Well
Total Parking 4
Inclusions Dishwasher(s) Dryer(s) Refrigerator(s) Stove(s)/Range(s) Washer(s)
Foundation Details Poured Concrete
Building Area Total 2143
Lot Size Acres 4.72
Waterfront Y/N N
Covered Spaces 4
Irrigation Water Rights Y/N N
Site Features Deck Dog Run Fenced-Fully Gated Entry Propane Shop
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Internal Only
OriginalMLSID NWM2587996
Street Number 1 20506
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* Excluded Features
List By
Mary Margaret Briggs

Listing Agent

Windermere Vashon

Broker

MMBriggs@windermere.com

Email

Affordability Calculator

$6,323
Per Month
92%
8%
0%
Monthly Principal & Interest
$5,790
Monthly Property Taxes
$533
Monthly Home Insurance
--
Default based on a 30-year fixed rate of 6.49% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
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Nearby
257926 Elementary School
257558 Middle School
Vashon Isl High High School
Pricing History
DatePricePrice ChangeDescription
9/28/2026$917,000 Listed Price

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20506 Old Mill Road SW, Vashon, WA, 98070 is a Single Family Home for sale at $917,000 with 2,143 sqft and a lot size of 4.72. 20506 Old Mill Road SW has 3 bedrooms, 3.0 baths, and was built in 1983. The property's zip code is 98070 which is in Vashon, WA