$8,850,000
Listed at $9,995,0004 bd•4 ba•5,040 sq ft
3639 W Mercer Way, Mercer Island, WA 98040
• Listed Oct 6, 2025
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Listing Broker: Coldwell Banker Bain; Terry Allen; 425-454-0470
Buyer Broker: COMPASS
About this home
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.
Listed by Terry Allen • Coldwell Banker Bain
Listing updated: May 23, 2026 at 04:02am
RexMont checked: moments ago
Source: NWMLS as Distributed by MLS Grid #2442125
Around this home
Property details
Interior features
- 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
- 2 fireplaces (gas)
Kitchen
- Dishwasher
- Disposal
- Double Oven
- Dryer
- Microwave
- Refrigerator
- See Remarks
- Stove(s)/Range(s)
- Washer
Bedrooms
- 4 bedrooms total
- 1 on the main level
- 3 upstairs
Bathrooms
- 2 full bathrooms
- 2 three-quarter bathrooms (shower, no tub)
- 1 half bathroom
- 4 bathrooms total (NWMLS count)
- 2 on the main level
Layout
- 2 Story
- 5,040 sq ft finished
Flooring
- Ceramic Tile
- Hardwood
- Marble
- See Remarks
- Stone
- Carpet
Heating & cooling
- 90%+ High Efficiency heating
- Ductless heating
- Forced Air heating
- Heat Pump heating
- High Efficiency (Unspecified) heating
- Central Air cooling
- Ductless cooling
- Forced Air cooling
- Heat Pump cooling
- HEPA Air Filtration cooling
- High Efficiency (Unspecified) cooling
Schools
Ratings via SchoolDiggerMercer Island School District
- Buyer To VerifyPublic · Grades Elementary—
- Islander Middle SchoolPublic · Grades 6-8 · State rank 9 of 51410/10
- Mercer Island High SchoolPublic · Grades 9-12 · State rank 2 of 39610/10
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.
Single-family home facts
As entered by the listing broker on Northwest MLS
Lot & site
- Topography
- Level,Partial Slope
- Vegetation
- Garden Space
- Lot number
- A
- Zoning code
- R15
- Zoning jurisdiction
- City
- Faces
- West
Systems
- Energy source
- Electric,Natural Gas
- Power production
- Electric, Natural Gas
- Power company
- PSE
- Water company
- City of MI
- Sewer company
- City of MI
- Irrigation water rights
- No
Rooms & extras
- Spa
- Yes
- Bathtubs
- 2
- Showers
- 2
- Fireplaces on main
- 2
- Excluded items
- No
New construction
- Construction methods
- Standard Frame
- Square footage source
- KCAR
- Lot size source
- KCAR
Manufactured home
- Land lease
- No
Neighborhood mobility
Doorstep, Pedal & Station Scores
Three RexMont scores for this exact address: what is on foot, what is by bike, and what rides past the door.
Ground Truth™
The ground, the slope, the flood zone and the noise at this address
Read from public hazard, flood, terrain and noise maps for this exact home.
Address Insider™
The members' report
Commute, transit, zoning and ADU potential, internet providers and the lifestyle around the home: the nearest grocery, coffee, park, services and transit stop. One free registration opens every home on rexmont.com.
Opens with the report above.
Sales & Tax Records for 3639 W Mercer Way
NWMLS via MLS Grid · King County AssessorEvery listing, pending, price change and closing filed on this home with the NWMLS, the county’s recorded sales, and its assessed values by tax year.
- Apr 22, 2026SoldNWMLS via MLS Grid · #2442125$8,850,000$1,756/sq ft
- Feb 14, 2026PendingNWMLS via MLS Grid · #2442125$9,995,000$1,983/sq ft
- Oct 6, 2025ListedNWMLS via MLS Grid · #2442125$9,995,000$1,983/sq ft
- May 1, 1992Recorded saleKing County recorder · Warranty deed$1,000,000$198/sq ft
Market pulse
Mercer Island is a balanced market.
Supply and demand are roughly in balance. Neither side has a clear edge.
Offer insight: Homes typically sell with one offer near asking price.
List to sale price: The average home sells for about 2% below list price.
Time on market: The average home goes pending in around 61 days.
Recent sales nearby
Within 1 mile · last 6 months$1,585,000 Sold
4 days ago
4 bd•3 ba•~2,220 sq ft•Single Family
4215 Island Crest Way, Mercer Island, WA 98040
6%
Under list
65
Days on market
0.9 mi
Distance
$3,425,000 Sold
4 days ago
7 bd•3.25 ba•~4,640 sq ft•Single Family
8105 SE 44th Street, Mercer Island, WA 98040
2%
Under list
24
Days on market
1.0 mi
Distance
$2,300,000 Sold
2 weeks ago
3 bd•1.75 ba•~1,900 sq ft•Single Family
7529 SE 40th Street, Mercer Island, WA 98040
21%
Over list
15
Days on market
0.4 mi
Distance
$1,852,500 Sold
2 weeks ago
4 bd•3 ba•~3,490 sq ft•Single Family
6605 SE 24th Street, Mercer Island, WA 98040
7%
Under list
12
Days on market
0.8 mi
Distance
$3,420,000 Sold
5 weeks ago
5 bd•4.5 ba•~3,930 sq ft•Single Family
3237 74th Avenue SE, Mercer Island, WA 98040
0%
Over list
—
Days on market
0.3 mi
Distance
Closed sales from MLS GRID / NWMLS within the past 6 months, matched on property type and within 1 mile. Comps approximate.
Want a deeper read on this market?
Ask a RexMont agentMarket data from MLS GRID / NWMLS · Updated Oct 2026
MLS GRID Disclaimer
Based on information submitted to the MLS GRID as of May 23, 2026 at 04:02am (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.
HO
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