$6,880,000
4102 100th Avenue
Mercer Island, WA 98040
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
Exterior features
Appliances
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
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.
Interested in this home?
Request a private tour or ask a question — a local agent will respond personally.