Leave a Message

Thank you for your message. We will be in touch with you shortly.

7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
7909 78th Avenue SE
VIEW PHOTOS
$8,488,000

7909 78th Avenue SE

7 Beds 10 Baths 9,340 Sq.Ft.

Open House

8/23/2025 2:30PM - 4:30PM PDT
8/24/2025 12:00PM - 2:00PM PDT

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.

Share Property

Location

7909 78th Avenue SE, Mercer Island, WA 98040

Status

For Sale
Helena Chen

Helena Chen

TITLE

Premier Real Estate Broker

Property Amenities

Interior
Fireplace Gas
Appliances Dishwasher(s), Disposal, Dryer(s), Microwave(s), Refrigerator(s), Stove(s)/Range(s), Washer(s)
Flooring Ceramic Tile, Hardwood, Carpet
Total Bedrooms: 7
Half Bathrooms: 3
Three-Quarter Bathrooms: 3
Full Bathrooms: 4
Other Interior Features Second Kitchen, Bath Off Primary, Built-In Vacuum, Double Pane/Storm Window, Dining Room, Fireplace, Fireplace (Primary Bedroom), French Doors, High Tech Cabling, Hot Tub/Spa, Indoor Pool, Jetted Tub, Sauna, Security System, Sprinkler System, Vaulted Ceiling(s), Walk-In Closet(s), Walk-In Pantry, Water Heater, Wet Bar, Wine Cellar
Area & Lot
Open house

8/23/2025 2:30PM - 4:30PM PDT

8/24/2025 12:00PM - 2:00PM PDT

Lot Area 0.54 Acres
Living area 9,340 Sq.Ft.
MLS® ID 2420036
Year Built 1996
School District Mercer Island
High School Mercer Isl High
Middle School Islander Mid
Elementary School Lakeridge Elem
View Description Lake,Mountain(s),Territorial
Type Residential
Status For Sale
Exterior
Stories 2
Pool Indoor
Air conditioning 90 High Efficiency, Central A/C
Heat type 90 High Efficiency, Forced Air, Heat Pump
Water Source Public
Garage Space 4.0
Security Features Security System
Sewer Sewer Connected
Other Exterior Features Stone, Stucco
Parking Attached Garage
Lot Features Dead End Street, Paved
Roof Tile
Finance
Sales Price $8,488,000
Real Estate Tax $32,248 yearly

360 Virtual Tour

Take a tour of this property
image

Schedule a Showing

We would love to show you our beautiful property. Please select your preferred date and time below. An agent will be in touch shortly to confirm your appointment.

Schedule a Showing

We would love to show you our beautiful property. Please select your preferred date and time below. An agent will be in touch shortly to confirm your appointment.

Thank you for your interest in 7909 78th Avenue SE, Mercer Island, WA 98040. We are reviewing your request and will be in touch shortly!

Mortgage Calculator

Estimate your monthly mortgage payment, including the principal and interest, property taxes, and HOA. Adjust the values to generate a more accurate rate.

All estimates are provided for informational purposes only. Actual amounts may vary.
$0,000 Your Payment 20 15 65
$0,000 Your Payment

Work With Helena

Ready to make your real estate dreams come true? Contact Helena Chen today for an extraordinary experience. Whether buying or selling, Helena Chen is committed to delivering exceptional results. Don't lose your way to success in the Eastside and Seattle real estate markets. Click to start!