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$8,495,000
14 Days On Site

4102 100th Avenue SE
Mercer Island, WA98040

For Sale|Single Family Residence|Active
5
Beds
5
Total Baths
3
Full Baths
2
Partial Baths
5,535
SqFt
$1,535
/SqFt
2010
Built
Cumulative Days On Market:
91
Subdivision:
North End
County:
King
Courtesy of NWMLS
Listing courtesy of Joan C. Bayley of Windermere Real Estate/East

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253-268-1714
4102 100th Avenue SE4102 100th Avenue SE4102 100th Avenue SE4102 100th Avenue SE
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Get on the lake this summer and jump into one of the best waterfront investment opportunities on Lake Washington. This Northend Retreat showcases 90 ft of shoreline, a pancake flat lawn, a newer dock, and a guest house at the water’s edge. Inside, craftsmanship reigns w/triple crown molding + rich millwork & board & batten details. An epic Great Room awaits, flowing effortlessly through a fully opening retractable window wall & triple sets of French doors to multiple deck spaces & a covered outdoor living area w/ TV, frplc and built in BBQ. At its heart sits an Epicurean kitchen—a true command center for serious cooking & unforgettable gatherings. Private upper wing hosts an apartment suite w/ kitchenette ideal for work or multigenerational living. Retreat to the main flr primary, a sanctuary in itself, w/ soaring ceilings, stunning views, his/hers closets & its own laundry. The lower level unfolds into a wonderland of space w/ 3 bdrms (1 an ensuite), exercise + big bonus/billiard rm. At the shoreline, discover a charming beach house w/ upper view loft that could be the perfect art studio or massive storage space for all of the outdoor toys. Control 4 smart home. 3 laundry rms. 5 bdrm/4.5 bth, 5,535 sf main house, 1 bdrm/1bth, 950 sf casita. With a 3-car garage, generous auto court & newer boat ready dock, you'll never want to leave. Welcome home to the ultimate in wtrfrnt living!

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Listing Snapshot
Price 
$8,495,000
Days On Site 
14 Days
Bedrooms 
5
Inside Area (SqFt) 
5,535 sqft
Total Baths 
5
Full Baths 
3
Partial Baths 
2
Lot Size 
0.505 Acres
Year Built 
2010
MLS® Number 
2543693
Status 
Active
Property Tax 
$41,749
HOA/Condo/Coop Fees 
N/A
Sq Ft Source 
N/A
Friends & Family
Recent Activity
2 weeks agoListing updated with changes from the MLS®
2 weeks agoListing first seen on site
General Features
Acres 
0.505
Attached Garage 
Yes
Direction Faces 
East
Garage 
Yes
Land Lease 
No
Levels 
Two
Parking 
AttachedRV Access/Parking
Parking Spaces 
3
Property Sub Type 
Single Family Residence
Security 
Security System
SqFt Total 
5535
Style 
Craftsman
Utilities 
Cable AvailableSewer Connected
Water Source 
Public
Interior Features
Appliances 
DishwasherDouble OvenDryerMicrowaveRefrigeratorDisposalGas Water HeaterWasherWater Heater
Basement 
DaylightFinished
Cooling 
Central AirHeat Pump
Fireplace 
Yes
Fireplace Features 
GasWood Burning
Fireplaces 
4
Flooring 
Ceramic TileHardwoodSlateCarpet
Heating 
Natural Gas
Interior 
Central VacuumWalk-In Closet(s)PantryVaulted Ceiling(s)
Main Level Bedrooms 
1
Window Features 
Skylight(s)
Bathroom Full 
Level - Lower
Bathroom Half 
Level - Main
Bathroom Three Quarter 
Level - Second
Bedroom 
Level - Lower
Den 
Level - Main
Extra Fin Room 
Level - Lower
Family Room 
Level - Main
Great Room 
Level - Main
Master Bedroom 
Level - Main
Rec Room 
Level - Lower
Utility Room 
Level - Lower
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Exterior Features
Construction Details 
StoneWood Siding
Exterior 
Garden
Fencing 
Partial
Lot Features 
LevelPavedWaterfront
Patio And Porch 
DeckPatio
Roof 
Composition
View 
LakeMountain(s)
Waterfront 
Yes
Waterfront Features 
Waterfront
Waterview 
LakeMountain(s)
Windows/Doors 
Skylight(s)
Community Features
Financing Terms Available 
CashConventional
MLS Area 
510 - Mercer Island
School District 
Mercer Island
Schools
School District
Mercer Island
Elementary School
Buyer To Verify
Middle School
Islander Mid
High School
Mercer Isl High
Courtesy of NWMLS
Listing courtesy of Joan C. Bayley of Windermere Real Estate/East



Listing information is provided by Participants of the Northwest MLS. IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed. Copyright 2026, Northwest MLS.
All data is obtained from various sources and may not have been verified by the 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.
Last checked: 2026-07-06 06:30 PM PDT

Neighborhood & Commute
Source: Walkscore
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