Rockhood
$6,800,000List price
6 bed · 9.5 bath · 9,340 sq ft
Active

7909 78th Avenue SE · Mercer Island, WA 98040

Source: NWMLS · COMPASS · Tere Foster #NWM2580194

About this home

Exceptional South Mercer Island living with Lake Washington and Mount Rainier views. Set on an expansive 23,000+ square foot lot, this impressive 9,340-square-foot residence offers remarkable scale, privacy and resort-style amenities designed for both everyday living and unforgettable entertaining. Generous gathering spaces flow throughout the home, while walls of windows capture beautiful views. Enjoy year-round recreation with an indoor swimming pool and private sport court—creating your own retreat without leaving home. Multiple indoor and outdoor entertaining areas provide space to host on any scale, from relaxed gatherings to special celebrations. A separate guest apartment above the garage offers exceptional flexibility for guests, au pair, home office or additional living space. Ideally located on the south end of Mercer Island with convenient access to shopping, dining, parks and highly regarded Mercer Island schools. A rare combination of views, space, recreation and convenience in one extraordinary island property.

Location

Basics

Property type
Single Family Residence
Style
2 Stories w/Bsmnt
Stories
2 stories
Year built
1996
Lot size
23,571 sq ft (0.54 acres)
County
King
MLS #
NWM2580194

Interior

Heating
90%+ High Efficiency, Forced Air, Heat Pump
Cooling
90%+ High Efficiency, Central Air
Flooring
Ceramic Tile, Hardwood, Travertine, Carpet
Appliances
Dishwasher, Disposal, Dryer, Microwave, Refrigerator, Stove(s)/Range(s), Washer
Fireplace
2 · Gas
Interior features
Second Kitchen, Bath Off Primary, Built-In Vacuum, Dbl Pane/Storm Window, Fireplace, Fireplace (Primary Bedroom), High Tech Cabling, Hot Tub/Spa, Indoor Pool, Jetted Tub, Pantry, Sauna, Security System, Sprinkler System, Vaulted Ceiling(s), Walk-In Closet(s), Water Heater, Wet Bar, Wine Cellar, Wine/Beverage Refrigerator, Wired for Generator
Entry level
Main

Exterior & lot

Exterior features
Stone, Stucco
Roof
Tile
Foundation
Poured Concrete
Lot features
Dead End Street, Paved
Topography
Partial Slope,Terraces
View
Lake, Mountains, Territorial
Waterfront
No
Pool
Indoor

Parking

Parking spaces
4
Garage
Yes (attached)
Covered spaces
4
Parking features
Attached Garage

Utilities

Water
Public
Sewer
Sewer Connected
Power
Electric, Natural Gas

Community & fees

Subdivision
Mercer Island
Property tax
$37,420 (2026)

Transaction

Listed on
Sep 11, 2026
Days on market
8
Price per sq ft
$728
Listing terms
Cash, Conventional
Possession
Closing, Negotiable

More homes nearby

Sale history

Earlier listings of this home on the MLS.

2011-08-25
Sold$2,330,000

Schools

School district: Mercer Island

Elementary
Lakeridge Elem
Middle
Islander Mid
High
Mercer Island High School
SchoolDigger 5 stars · Top 1% in WA

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Listing provided courtesy of: COMPASS

Listing agent: Tere Foster.

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 2026-09-18.