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4102 100th Avenue Se, Mercer Island, WA 98040

Mercer Island
Local realty services provided by:CENTURY 21 North Homes Realty
Listed by: joan c. bayley, tere foster
Office: windermere real estate/east
MLS#:2572498
Source:NWMLS
4102 100th Avenue Se,Mercer Island, WA 98040
$6,880,000
  • 5 Beds
  • 5 Baths
  • 5,535 sq. ft.
  • Single family
  • Active
Upcoming open houses
  • Sun, Aug 23
    01:00 pm - 03:00 pm

Price summary

  • Price:$6,880,000
  • Price per sq. ft.:$1,243

About this home

Undeniably the best waterfront value of the summer! Invest in not one home but two: a 5 bedrm main residence with an apartment/office suite plus a separate 1 bedrm guest house right at the water’s edge. This Northend Retreat showcases 90 ft of shoreline, a pancake flat lawn, a newer dock. 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...

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Home facts

  • Year built:2002
  • Subdivision & Development:North End
  • Listing ID #:2572498
  • Updated:August 23, 2026 at 11:30 AM

Rooms and interior

  • Bedrooms:5
  • Total bathrooms:5
  • Full bathrooms:3
  • Half bathrooms:1
  • Flooring:Carpet, Ceramic Tile Floor, Hardwood, Stone
  • 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:Finished
  • Living area:5,535 sq. ft.

Heating and cooling

  • Heating:Forced Air
  • Central air:Yes

Structure and exterior

  • Roof:Flat Roof
  • Year built:2002
  • Building area:5,535 sq. ft.
  • Lot area:0.51 Acres
  • Architectural Style:Craftsman
  • Construction Materials:Stone Exterior Finish, Wood Exterior Finish
  • Exterior Features:Deck, Dock, Fenced-Fully, Patio, Sprinkler System
  • Foundation Description:Finished

Schools

  • High school:Mercer Isl High
  • Middle school:Islander Mid
  • Elementary school:Northwood Elem

Utilities

  • Water:Public
  • Sewer:Sewer Connected

Finances and disclosures

  • Price:$6,880,000
  • Price per sq. ft.:$1,243
  • Tax amount:$41,749 (2025)

Features and amenities

  • Appliances:Dishwasher, Refrigerator, Washer
  • Laundry features:Dryer, Washer
  • Amenities:Cable TV, Dock, High Speed Internet, Moorage, Pantry, Security System, Vaulted Ceiling(s), Walk-In Closet(s), 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 23, 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: Michael Killmer

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