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4102 100th Avenue Se, Mercer Island, WA 98040

Mercer Island
Local realty services provided by:CENTURY 21 Tri-Cities
Listed by: joan c. bayley, tere foster
Office: windermere real estate/east
MLS#:2543693
Source:NWMLS
4102 100th Avenue Se,Mercer Island, WA 98040
$8,495,000
  • 5 Beds
  • 5 Baths
  • 5,535 sq. ft.
  • Single family
  • Active

Price summary

  • Price:$8,495,000
  • Price per sq. ft.:$1,534.78

About this home

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....

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Home facts

  • Year built:2010
  • Subdivision & Development:North End
  • Listing ID #:2543693
  • Updated:August 21, 2026 at 11:39 AM

Rooms and interior

  • Bedrooms:5
  • Total bathrooms:5
  • Full bathrooms:3
  • Half bathrooms:1
  • Flooring:Carpet, Ceramic Tile Floor, Hardwood, Slate Floor
  • Kitchen Description:Dishwasher, Disposal, Double Oven, Microwave, Refrigerator
  • Bedroom Description:Lower Level Bedrooms : 3, Main Level Bedrooms : 1, Upper Level Bedrooms : 1
  • Basement:Yes
  • Basement Description:Daylight, Finished
  • Living area:5,535 sq. ft.

Heating and cooling

  • Heating:90%+ High Efficiency
  • Central air:Yes

Structure and exterior

  • Roof:Composition
  • Year built:2010
  • Building area:5,535 sq. ft.
  • Lot area:0.51 Acres
  • Lot Features:Dead-end Street, Paved
  • Architectural Style:Craftsman
  • Construction Materials:Stone Exterior Finish, Wood Exterior Finish
  • Exterior Features:Deck, Dock, Fenced-Partially, Patio, Sprinkler System
  • Foundation Description:Daylight, Finished
  • Levels:2 Story

Schools

  • High school:Mercer Isl High
  • Middle school:Islander Mid
  • Elementary school:Buyer To Verify

Utilities

  • Water:Public
  • Sewer:Sewer Connected

Finances and disclosures

  • Price:$8,495,000
  • Price per sq. ft.:$1,534.78
  • Tax amount:$41,749 (2025)

Features and amenities

  • Appliances:Dishwasher, Refrigerator, Washer
  • Laundry features:Dryer, Washer
  • Amenities:Built-In Vacuum, Cable TV, Dock, French Doors, Gas Available, Irrigation, Moorage, Pantry, SMART Wired, Security System, Skylight(s), Sprinkler System, Vaulted Ceiling(s), Walk-In Closet(s), Water Heater, Wine Cellar
  • Smart home:Yes

Parking

  • Total parking spaces:3
  • Parking description:Attached Garage, RV Parking
  • Garage:Yes
MLS LogoListings courtesy of Northwest MLS as distributed by MLS GRID. Based on information submitted to the MLS GRID as of August 21, 2026. 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 is provided for consumers' personal, non-commercial use, solely to identify prospective properties for potential purchase; all other use is strictly prohibited and may violate relevant federal and state law. Information deemed reliable but not guaranteed. Copyright © 2026 MLS GRID. All Rights Reserved. NWMLS Member Broker: Vicki Monteagudo

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