Experience the ultimate Mercer Island waterfront. A bespoke home on 100' of unparalleled west facing Lake WA frontage is built at the water’s edge. Designed for indoor/outdoor living and entertaining; the one-of-a-kind terrace perched over the water could not be built today. French doors and folding windows link al fresco energy to the warmth inside. Studs up remodel in 2016 spared no expense and added a separate carriage house. Notable details include limestone and sandstone imported from a quarry in France, floors reclaimed from a 16th century Italian monastery, specimen gardens, and a dock w/covered slip. Elan Smart Home System lets you manage your home from your phone. A generator runs the entire home if needed. Front row for Seafair.
Sold
Listed by: Coldwell Banker Bain • Terry Allen
Bought with: COMPASS
$8,850,000
3639 W Mercer Way, Mercer Island, WA 98040
4beds
5,040sqft
Single Family Residence
Built in 1993
0.39 Acres Lot
$8,710,300 Zestimate®
$1,756/sqft
$8,394 Estimated rent
Home value
$8,710,300
Estimated sales range
Not available
$8,394/mo
Zestimate® history
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List your homeWhat's special
Specimen gardensMercer island waterfrontElan smart home system
Zillow last checked:
Listing updated:
Listed by:
Terry Allen,
Coldwell Banker Bain,
Patricia Wallace,
Coldwell Banker Bain
Bought with:
Greg Rosenwald, 79606
COMPASS
Source: NWMLS as distributed by MLS GRID,MLS#: 2442125
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 5
- Full bathrooms: 2
- 3/4 bathrooms: 2
- 1/2 bathrooms: 1
- Main level bathrooms: 2
- Main level bedrooms: 1
Bathroom three quarter
- Level: Second
Bonus room
- Level: Second
Heating
- Fireplace, 90%+ High Efficiency, Ductless, Forced Air, Heat Pump, High Efficiency (Unspecified), Electric, Natural Gas
Cooling
- Ductless, Forced Air, Heat Pump, HEPA Air Filtration, High Efficiency (Unspecified)
Appliances
- Included: Dishwasher, Disposal, Double Oven, Dryer, Microwave, Refrigerator, See Remarks, Stove(s)/Range(s), Washer, Dishwasher(s), Dryer(s), Garbage Disposal, Microwave(s), Refrigerator(s), Washer(s)
Features
- Bath Off Primary, Dining Room, High Tech Cabling, Pantry
- Flooring: Ceramic Tile, Hardwood, Marble, See Remarks, Stone, Carpet
- Doors: French Doors
- Windows: Dbl Pane/Storm Window, Skylight(s)
- Basement: None
- Number of fireplaces: 2
- Fireplace features: Gas, Main Level: 2, Fireplace
Interior area
- Total structure area: 5,040
- Total interior livable area: 5,040 sqft
Property
Parking
- Total spaces: 3
- Parking features: Detached Garage
- Has garage: Yes
- Covered spaces: 3
Features
- Levels: Two
- Stories: 2
- Entry location: Main
- Patio & porch: Second Primary Bedroom, Bath Off Primary, Dbl Pane/Storm Window, Dining Room, Fireplace, French Doors, High Tech Cabling, Hot Tub/Spa, Jetted Tub, Pantry, Security System, Skylight(s), SMART Wired, Sprinkler System, Vaulted Ceiling(s), Walk-In Closet(s), Wired for Generator
- Has spa: Yes
- Spa features: Indoor, Bath
- Has view: Yes
- View description: City, Lake, Mountain(s), See Remarks
- Has water view: Yes
- Water view: Lake
- Waterfront features: Low Bank, Bulkhead, Lake
- Frontage length: Waterfront Ft: 100
Lot
- Size: 0.39 Acres
- Features: Dead End Street, Paved, Cable TV, Deck, Dock, Fenced-Fully, Gas Available, High Speed Internet, Hot Tub/Spa, Irrigation, Moorage, Outbuildings, Patio, Propane, Sprinkler System
- Topography: Level,Partial Slope
- Residential vegetation: Garden Space
Details
- Parcel number: 3623500255
- Zoning: R15
- Zoning description: Jurisdiction: City
- Special conditions: Standard
- Other equipment: Wired for Generator
Construction
Type & style
- Home type: SingleFamily
- Architectural style: See Remarks,2 Story
- Property subtype: Single Family Residence
Materials
- Stucco
- Foundation: Poured Concrete
- Roof: Flat
Condition
- Year built: 1993
Utilities & green energy
- Electric: Company: PSE
- Sewer: Sewer Connected, Company: City of MI
- Water: Public, Company: City of MI
Community & HOA
Community
- Security: Security System
- Subdivision: Westside
Location
- Region: Mercer Island
Financial & listing details
- Price per square foot: $1,756/sqft
- Tax assessed value: $10,219,000
- Annual tax amount: $60,176
- Date on market: 9/16/2024
- Cumulative days on market: 674 days
- Listing terms: Conventional
- Inclusions: Dishwasher(s), Double Oven, Dryer(s), Garbage Disposal, Microwave(s), Refrigerator(s), See Remarks, Stove(s)/Range(s), Washer(s)
Price history
| Date | Event | Price |
|---|---|---|
| 4/22/2026 | Sold | $8,850,000-11.5%$1,756/sqft |
Source:  NWMLS as distributed by MLS GRID #2442125 Report a problem | ||
| 2/14/2026 | Pending sale | $9,995,000$1,983/sqft |
Source: NWMLS as distributed by MLS GRID #2442125 Report a problem | ||
| 10/7/2025 | Listed for sale | $9,995,000$1,983/sqft |
Source: NWMLS as distributed by MLS GRID #2442125 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $66,556 +10% | $10,219,000 +10.6% |
| 2024 | $60,497 +1.3% | $9,242,000 +6.5% |
| 2023 | $59,729 +0.4% | $8,679,000 -10.6% |
| 2022 | $59,507 +14.3% | $9,706,000 +37.3% |
| 2021 | $52,043 +4.2% | $7,070,000 +13.3% |
| 2020 | $49,945 +5.6% | $6,242,000 +4.2% |
| 2019 | $47,283 +7.4% | $5,988,000 +2.2% |
| 2018 | $44,028 -10.3% | $5,861,000 +3.6% |
| 2017 | $49,064 +54% | $5,657,000 +11.1% |
| 2016 | $31,865 | $5,092,000 +28.7% |
| 2015 | $31,865 | $3,958,000 +8.6% |
| 2014 | $31,865 | $3,644,000 +9% |
| 2013 | $31,865 | $3,344,000 -2.5% |
| 2012 | -- | $3,429,000 -4.8% |
| 2011 | -- | $3,601,000 -7.3% |
| 2010 | -- | $3,883,000 |
| 2009 | -- | $3,883,000 +23.5% |
| 2007 | -- | $3,145,000 +10.2% |
| 2006 | -- | $2,855,000 +9.8% |
| 2005 | -- | $2,600,000 +1.8% |
| 2001 | $24,404 +26.7% | $2,554,000 +39.9% |
| 2000 | $19,253 | $1,825,000 |
Find assessor info on the county website
Neighborhood: 98040
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Nearby schools
GreatSchools rating
- 9/10West Mercer Elementary SchoolGrades: K-5Distance: 0.8 mi
- 9/10Islander Middle SchoolGrades: 6-8Distance: 2.9 mi
- 10/10Mercer Island High SchoolGrades: 9-12Distance: 1.2 mi
Schools provided by the listing agent
- Middle: Islander Mid
- High: Mercer Isl High
Source: NWMLS as distributed by MLS GRID. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
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Estimated market value
$8,710,300
Get a cash offer in 3 minutes
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Estimated market value
$8,710,300
- Washington
- King County
- Mercer Island
- 98040
- 3639 W Mercer Way
