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Open house Sun, Aug 23

$6,880,000

4102 100th Avenue

Mercer Island, WA 98040

Active
High BankLow BankLake viewMountains view

Beds

5

Baths

5

Sq Ft

5,535

Lot

0.51 ac

Year built

2002

Type

Residential

Days listed

MLS #

2572498

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 (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!

Interior features

Second KitchenSecond Primary BedroomBath Off PrimaryDbl Pane/Storm WindowFireplacePantrySecurity SystemVaulted Ceiling(s)Walk-In Closet(s)Wine Cellar

Exterior features

StoneWood

Appliances

DishwasherDisposalDouble OvenDryerMicrowaveRefrigeratorStove(s)/Range(s)Washer

Schools

Elementary

Northwood Elem

Middle

Islander Mid

High

Mercer Isl High

Property details

Heating
Forced Air
Cooling
Central Air
Flooring
Ceramic Tile, Hardwood, Stone, Carpet
Parking
Attached Garage, RV Parking
View
Lake, Mountains
Water source
Public
Sewer
Sewer Connected
Style
Craftsman
Fireplaces
2

Costs

Price / sq ft
$1,243
Annual taxes
$41,749 (2025)

Estimate your monthly payment

$38,268/mo

Principal & interest
$34,789
Property taxes
$3,479
Loan amount $5,504,000

Estimate only — excludes homeowner's insurance and PMI. Rates shown are not a quote. Talk to us to connect with a lender.

Location

Mercer Island, WA 98040

Approximate location. Contact us to confirm the exact address.

Listing courtesy of Windermere Real Estate/East— Joan C. Bayley.Listing data courtesy of the Northwest Multiple Listing Service (NWMLS). Information deemed reliable but not guaranteed and should be independently verified. All properties are subject to prior sale, change, or withdrawal.

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