7909 78th Avenue SE, Mercer Island, WA 98040 (MLS # 2580194)
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Listing provided courtesy of Northwest MLS; COMPASS
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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.
| LAST UPDATED | 9/11/2026 | TRACT | Mercer Island |
|---|---|---|---|
| YEAR BUILT | 1996 | COMMUNITY | Mercer Island |
| COUNTY | King | STATUS | Active |
| PROPERTY TYPE(S) | Single Family |
| Elementary School | Lakeridge Elem |
|---|---|
| Jr. High School | Islander Mid |
| High School | Mercer Isl High |
| ADDITIONAL DETAILS | |
| AIR | Central Air |
|---|---|
| AIR CONDITIONING | Yes |
| APPLIANCES | Dishwasher, Disposal, Dryer, Gas Water Heater, Microwave, Refrigerator, Washer, Water Heater |
| AREA | 510 - Mercer Island |
| BASEMENT | Daylight, Finished, Yes |
| CONSTRUCTION | Stone, Stucco |
| EXTERIOR | Garden |
| FIREPLACE | Yes |
| GARAGE | Attached Garage, Yes |
| HEAT | Electric, Forced Air, Heat Pump, Natural Gas |
| INTERIOR | 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, Second Kitchen, Security System, Sprinkler System, Vaulted Ceiling(s), Walk-In Closet(s), Water Heater, Wet Bar, Wine Cellar, Wine/Beverage Refrigerator, Wired for Generator |
| LOT | 0.5411 acre(s) |
| LOT DESCRIPTION | Dead End Street, Paved |
| MLS STATUS | Active |
| PARKING | Attached |
| POOL | Yes |
| POOL DESCRIPTION | Indoor |
| STORIES | 2 |
| STYLE | 18 - 2 Stories w/Bsmnt |
| SUBDIVISION | Mercer Island |
| TAXES | 37420.23 |
| UTILITIES | Cable Available, Sewer Connected |
| VIEW | Yes |
| VIEW DESCRIPTION | Lake, Mountain(s), Territorial |
| WATER | Public |
TOTAL MONTHLY PAYMENT
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Properties with the 
icon are courtesy of Northwest MLS.
Listings courtesy of Northwest MLS as distributed by MLS GRID. Based on information submitted to the MLS GRID as of 9/11/26 8:41 PM PDT. All data is obtained from various sources and may not have been verified by broker or MLS GRID. IDX information is provided exclusively for consumers’ personal noncommercial use, that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. 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.
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