4102 100th Avenue SE · Mercer Island, WA 98040
Source: NWMLS · Windermere Real Estate/East · Joan C. Bayley #NWM2572498
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!
Location
Basics
- Property type
- Single Family Residence
- Style
- Craftsman
- Condition
- Very Good
- Year built
- 2002 (renovated 2010)
- Lot size
- 22,000 sq ft (0.51 acres)
- County
- King
- MLS #
- NWM2572498
Interior
- Heating
- Forced Air
- Cooling
- Central Air
- Flooring
- Ceramic Tile, Hardwood, Stone, Carpet
- Appliances
- Dishwasher, Disposal, Double Oven, Dryer, Microwave, Refrigerator, Stove(s)/Range(s), Washer
- Fireplace
- 2 · Gas
- Interior features
- Second Kitchen, Second Primary Bedroom, Bath Off Primary, Dbl Pane/Storm Window, Fireplace, Pantry, Security System, Vaulted Ceiling(s), Walk-In Closet(s), Wine Cellar
- Entry level
- Main
Exterior & lot
- Exterior features
- Stone, Wood
- Roof
- Flat
- Foundation
- Poured Concrete
- Topography
- Level,Partial Slope
- View
- Lake, Mountains
- Waterfront
- Yes
Parking
- Parking spaces
- 3
- Garage
- Yes (attached)
- Covered spaces
- 3
- Parking features
- Attached Garage, RV Parking
Utilities
- Water
- Public
- Sewer
- Sewer Connected
- Power
- Natural Gas
Community & fees
- Subdivision
- North End
- Property tax
- $41,749 (2025)
Transaction
- Listed on
- Aug 21, 2026
- Days on market
- 157
- Price per sq ft
- $1,243
- Listing terms
- Cash, Conventional
- Possession
- Negotiable
More homes nearby
Sale history
Earlier listings of this home on the MLS.
- 2012-07-02
- Sold$4,199,000
Schools
School district: Mercer Island
- Elementary
- Northwood Elem
- Middle
- Islander Mid
- High
- Mercer Island High SchoolSchoolDigger 5 stars · Top 1% in WA
Listing provided courtesy of: Windermere Real Estate/East
Listing agent: Joan C. Bayley.
Based on information submitted to the MLS GRID as of —. 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. IDX information provided exclusively for consumers' personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed.
Data last updated 2026-09-12.