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4102 100th Avenue SEMercer Island, WA 98040

For Sale

$8,495,000

Smart Buyer Rebate $84,950

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!

Listed by Joan C. Bayley

·

Windermere Real Estate/East

Listed by Tere Foster

·

Windermere Real Estate/East

Last updated July 24, 2026

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Source: NWMLS #2543693

Listing Facts

  • TypeSingle-family
  • NeighborhoodEast Mercer
  • Bedrooms5
  • Bathrooms5
  • Days on Prevu39
  • Taxes$41,749/year
  • Size5,535 sqft
  • Price per sqft$1,535

Amenities

  • Dishwasher
  • Washer/Dryer
  • Pets Allowed
  • Air Conditioning
  • Parking

Location

Mortgage Calculator

Listing History

06/22/2026
Listed by Windermere Real Estate/East
$8,495,000

Property Details for 4102 100th Avenue SE

Exterior

Construction

  • Property Condition: Very Good
  • Roof: Composition
  • Structure Type: House
  • Year Built: 2010
  • Architectural Style: Craftsman
  • Building Name: Lakeholm Addition
  • Construction Materials: Stone, Wood
  • Exterior Features: Stone, Wood

Features

  • Direction Faces: East
  • View: Lake, Mountains
  • Waterfront Features: Medium Bank
  • Waterfront: Yes

Measurements

  • Building Area Total: 5,535
  • Building Area Units: Square Feet
  • Lot Features: Dead End Street, Paved
  • Lot Size Acres: 0.50
  • Lot Size Square Feet: 22,000
  • Lot Size Units: Square Feet

Financial

Taxes

  • Parcel Number: 4131900045
  • Tax Annual Amount: $41,749.00
  • Tax Year: 2025

Interior

Features

  • Appliances: Dishwasher, Disposal, Double Oven, Dryer, Microwave, Refrigerator, Stove(s)/Range(s), Washer
  • Fireplace Features: Gas, Wood Burning
  • Fireplace: Yes
  • Fireplaces Total: 4
  • Flooring: Ceramic Tile, Hardwood, Slate, Carpet
  • Interior Features: Second Kitchen, Bath Off Primary, Built-In Vacuum, Dbl Pane/Storm Window, Dining Room, Fireplace, French Doors, High Tech Cabling, Loft, Pantry, Security System, Skylight(s), SMART Wired, Sprinkler System, Vaulted Ceiling(s), Walk-In Closet(s), Water Heater, Wine Cellar, Wine/Beverage Refrigerator

Measurements

  • Living Area: 5,535

Rooms

  • Basement: Daylight, Finished
  • Bathrooms Full: 3
  • Bathrooms Half: 1
  • Bathrooms Three Quarter: 1
  • Bathrooms Total Integer: 5
  • Bedrooms Total: 5
  • Main Level Bathrooms: 2
  • Main Level Bedrooms: 1

Other

Location

  • Subdivision Name: North End

Parking

Parking

  • Attached Garage: Yes
  • Covered Spaces: 3
  • Garage: Yes
  • Parking Features: Attached Garage, RV Parking
  • Parking Total: 3

Schools

Elementary School

  • Elementary School: Buyer To Verify

High School

  • High School: Mercer Isl High
  • High School District: Mercer Island

Middle or Junior School

  • Middle Or Junior School: Islander Mid

Utilities

Equipment

  • Has Cooling: Yes
  • Has Heating: Yes
  • Sewer: Sewer Connected
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 5 bedrooms and 5 bathrooms in this single-family home at 4102 100th Avenue SE.

What schools are nearby to 4102 100th Avenue SE?

Nearby schools include the Buyer To Verify Elementary School, Islander Mid Middle School, and Mercer Isl High.

Does this single-family home have parking?

Yes, there are 3 parking spaces available for 4102 100th Avenue SE.

What are the annual taxes for 4102 100th Avenue SE?

Annual taxes for this single-family home are estimated at $41,749.

How does 4102 100th Avenue SE compare to other single-family homes in East Mercer?

This single-family home is listed 86% above the average price for single-family homes in East Mercer and has been on the market for 7 more days than the typical home in this area.

What building or home owners association is the single-family home part of?

This single-family home is in the Lakeholm Addition building.

What is the square footage on this single-family home?

According to the MLS, this listing is 5,535 sqft.

4102 100th Avenue SE is a 5-bedroom, 5-bath single-family home for sale in Mercer Island WA 98040. Available on Prevu for 39 days at $8,495,000. This residence features 5,535 square feet of living space, located in East Mercer. The median listing price for single-family homes in this area is $2,349,500. Nearby schools include Buyer To Verify Elementary School, Islander Mid Middle School, and Mercer Isl High. The home offers dishwasher, pets allowed, air conditioning, parking, and washer/dryer. Browse more single-family home listings in Mercer Island.

Based on information from NWMLS and/or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by Prevu or the MLS. Information is provided exclusively for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumer may be interested in purchasing.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.