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7909 78th Avenue SE

Mercer Island, WA 98040
  • $7,800,000
  • STATUS: Active
  • MLS #: 2420036
Price Reduced
UPDATED: 53 min ago
$7,800,000
  • 7
    BEDS
  • 0.54
    ACRES
  • 8
    BATHS
  • 3
    1/2 BATHS
  • 9,340
    SQFT
  • $835
    $/SQFT
Neighborhood:
Type:
Single-Family Home
Built:
1996
County:

School Information

Elementary School:
Middle School:
High School:
School District:
Northwest MLS logo Listing information ©2025 Northwest MLS. Listing courtesy of eXp Realty.
Mortgage Calculator is provided by BoomTown.

Description

Perched above Lake Washington with expansive views, this custom estate showcases exquisite cherry millwork throughout. The main-level primary suite opens to a private patio, and upstairs, an additional primary suite with its own terrace complements two more ensuites. Entertain effortlessly in the gourmet kitchen with high-end appliances and butler's pantry. The lower level transforms into a resort-style retreat with indoor pool, spa, sauna, gym, theater, billiards room, and wine cellar. Outside, expansive decks, a sport court, putting green, and professionally landscaped grounds frame the serene lake backdrop. Experience refined waterfront living in a singular setting.

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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.The listing data relating to real estate for sale on this web site comes in part from the Northwest Multiple Listing Service. Real estate listings held by brokerage firms other than Reuben Bray Homes | Realty One Group Prestige are marked by the "three tree" symbol; detailed information about such listings includes the names of the listing brokers. The three tree icon refers to an NWMLS listing. Data last updated 2025-12-06T00:15:05.283. The "Days on Site" data field is calculated by BoomTown and is the number of days since the listing was originally received in our system. It is not the equivalent of "Days on Market".
Based on information submitted to the MLS GRID as of 2025-12-06T00:15:05.283. 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.
www.reubenbrayhomes.com/homes/167026499
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7909 78th Avenue SE Mercer Island, WA 98040

  • Price: $7,800,000
  • Status: Active
  • On Site: Days
  • Updated: 53 min ago
  • MLS #: 2420036
7
Beds
8
Baths
3
½ Baths
0.54
Acres
9,340
SQFT
$835
$/SQFT
1996
Built
Neighborhood:
Mercer Island
County:
King
Area:
Mercer Island
Elementary School:
Lakeridge Elem
Middle School:
Islander Mid
High School:
Mercer Isl High
School District:
Mercer Island
Property Description
Perched above Lake Washington with expansive views, this custom estate showcases exquisite cherry millwork throughout. The main-level primary suite opens to a private patio, and upstairs, an additional primary suite with its own terrace complements two more ensuites. Entertain effortlessly in the gourmet kitchen with high-end appliances and butler's pantry. The lower level transforms into a resort-style retreat with indoor pool, spa, sauna, gym, theater, billiards room, and wine cellar. Outside, expansive decks, a sport court, putting green, and professionally landscaped grounds frame the serene lake backdrop. Experience refined waterfront living in a singular setting.
Exterior Features

Attached Garage YN Yes Carport YN No Covered Spaces 4 Entry Location Main Exterior Features StoneStucco Garage YN Yes Levels Two Lot Features Dead End StreetPaved Open Parking YN No Parking Features Attached Garage Parking Total 4 Roof Tile Structure Type House Style Code 18 - 2 Stories w/Bsmnt Topography Partial SlopeTerraces Vegetation Fruit TreesGarden Space View LakeMountain(s)Territorial View YN Yes Waterfront YN No

Interior Features

Appliances Dishwasher(s)DisposalDryer(s)Microwave(s)Refrigerator(s)Stove(s)/Range(s)Washer(s) Appliances Included Dishwasher(s)Dryer(s)Garbage DisposalMicrowave(s)Refrigerator(s)Stove(s)/Range(s)Washer(s) Basement DaylightFinished Baths Full Garage 0 Baths Full Lower 1 Baths Full Main 1 Baths Full Upper 2 Baths Half Garage 0 Baths Half Lower 1 Baths Half Main 2 Baths Half Upper 0 Baths Three Quarter Garage 0 Baths Three Quarter Lower 1 Baths Three Quarter Main 0 Baths Three Quarter Upper 3 Bedrooms Lower 1 Bedrooms Upper 5 Building Area Total 9340 Cooling 90%+ High EfficiencyCentral A/C Cooling YN Yes Fireplace YN Yes Fireplaces Main 1 Fireplaces Total 2 Fireplaces Upper 1 Flooring Ceramic TileHardwoodCarpet Heating 90%+ High EfficiencyForced AirHeat Pump Heating YN Yes Interior Features Second KitchenBath Off PrimaryBuilt-In VacuumDouble Pane/Storm WindowDining RoomFireplaceFireplace (Primary Bedroom)French DoorsHigh Tech CablingHot Tub/SpaIndoor PoolJetted TubSaunaSecurity SystemSprinkler SystemVaulted Ceiling(s)Walk-In Closet(s)Walk-In PantryWater HeaterWet BarWine Cellar Living Area 9340 Main Level Bedrooms 1 Rooms Bonus Room (Lower Level) Den/Office (Main Level) Dining Room (Main Level) Entry Hall (Main Level) Extra Fin Room (Lower Level) Family Room (Main Level) Kitchen With Eating Space (Main Level) Kitchen Without Eating Space Living Room (Main Level) Primary Bedroom Rec Room (Lower Level) Utility Room (Main Level) Bathroom Full Bathroom Full Bathroom Full (Lower Level) Bathroom Full (Main Level) Bathroom Half (Lower Level) Bathroom Half (Main Level) Bathroom Half (Main Level) Bathro Square Footage Finished 9340 Square Footage Unfinished 0

Property Features

Association Fee 0 Association YN No Building Information Built On Lot Down Payment Resource YN No Energy Source ElectricNatural Gas FIRPTAYN No Foundation Details Poured Concrete Inclusions Dishwasher(s)Dryer(s)Garbage DisposalMicrowave(s)Refrigerator(s)Stove(s)/Range(s)Washer(s) Irrigation Water Rights YN No Land Lease YN No Listing Terms Cash OutConventional New Construction YN No Pool Features Indoor Pool Type Indoor Possession Closing Power Company Puget Sound Energy Power Production Type ElectricNatural Gas Property Sub Type Single Family Residence Security Features Security System Senior Community YN No Senior Exemption No Sewer Sewer Connected Sewer Company City of Mercer Island Site Features Athletic CourtCable TVDeckGas AvailableHot Tub/Spa Spa YN Yes Special Listing Conditions None Tax Annual Amount 32247.72 Tax Year 2025 Water Company City of Mercer Island Water Heater Location Basement Water Heater Type Gas Water Source Public Year Built Effective 1996 Zoning Jurisdiction City



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.The listing data relating to real estate for sale on this web site comes in part from the Northwest Multiple Listing Service. Real estate listings held by brokerage firms other than Reuben Bray Homes | Realty One Group Prestige are marked by the "three tree" symbol; detailed information about such listings includes the names of the listing brokers. The three tree icon refers to an NWMLS listing. Data last updated 2025-12-06T00:15:05.283. The "Days on Site" data field is calculated by BoomTown and is the number of days since the listing was originally received in our system. It is not the equivalent of "Days on Market".
Based on information submitted to the MLS GRID as of 2025-12-06T00:15:05.283. 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.
 
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Vancouver WA, 98684
Northwest MLS logo Listing information ©2025 Northwest MLS. Listing courtesy of eXp Realty.
Mortgage Calculator is provided by BoomTown.