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7909 78th Avenue Se, 
Mercer Island, WA 98040

$6,800,000


6

Beds


11

Baths


9,340

Sq Ft


Single Family

Active

Listed by

Tere Foster

Robert Pong

Compass

Realogics Sotheby'S Int'L Rlty

Last updated:

September 14, 2026, 11:14 AM

MLS#

2580194

Source:

NWMLS

About This Home

7909 78th Avenue Se

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.

Home Facts

Single Family

11 Baths

6 Bedrooms

Built in 1996

Subdivision & Development:

Mercer Island

Price Summary

6,800,000

$728 per Sq. Ft.

MLS #:

2580194

Last Updated:

September 14, 2026, 11:14 AM


Rooms & Interior

Bedrooms

Total Bedrooms:

6

Bathrooms

Total Bathrooms:

11

Full Bathrooms:

4

Interior

Living Area:

9,340 Sq. Ft.


Structure

Structure

Building Area:

9,340 Sq. Ft.

Year Built:

1996


Lot

Lot Size (Sq. Ft):

23,571


Finances & Disclosures

Finances

Price:

$6,800,000

Price per Sq. Ft:

$728 per Sq. Ft.

MLS Logo
Listings courtesy of Northwest MLS as distributed by MLS GRID. Based on information submitted to the MLS GRID as of September 15, 2026. 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. Listing information is provided for consumers' personal, non-commercial use, solely to identify prospective properties for potential purchase; all other use is strictly prohibited and may violate relevant federal and state law. Information deemed reliable but not guaranteed. Copyright © 2026 MLS GRID. All Rights Reserved.

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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.