Login

7909 78th Avenue Se, Mercer Island, WA 98040

Local realty services provided by:CENTURY 21 Lund, Realtors
Listed by: helena chen
Office: exp realty
MLS#:2420036
Source:NWMLS
7909 78th Avenue Se,Mercer Island, WA 98040
$7,800,000
  • 7 Beds
  • 11 Baths
  • 9,340 sq. ft.
  • Single family
  • Active
Upcoming open houses
  • Sun, Feb 01
    12:00 pm - 02:00 pm

Price summary

  • Price:$7,800,000
  • Price per sq. ft.:$835.12

About this home

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.

Contact an agent

contact an agent

Yes, I would like more information. Please use and/or share my information with an independent agent affiliated with the CENTURY 21®  brand to contact me about my real estate needs. By clicking Send message, 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 an independent agent affiliated with the CENTURY 21®  brand 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® , Coldwell Banker® , Corcoran® , ERA® , Sotheby's International Realty® ). I acknowledge that I have read and agree to theTerms of useandPrivacy notice

Home facts

  • Year built:1996
  • Listing ID #:2420036
  • Updated:January 31, 2026 at 11:56 AM

Rooms and interior

  • Bedrooms:7
  • Total bathrooms:11
  • Full bathrooms:4
  • Half bathrooms:3
  • Living area:9,340 sq. ft.

Heating and cooling

  • Cooling:90%+ High Efficiency, Central A/C
  • Heating:90%+ High Efficiency, Forced Air, Heat Pump

Structure and exterior

  • Roof:Tile
  • Year built:1996
  • Building area:9,340 sq. ft.
  • Lot area:0.54 Acres

Schools

  • High school:Mercer Isl High
  • Middle school:Islander Mid
  • Elementary school:Lakeridge Elem

Utilities

  • Water:Public
  • Sewer:Sewer Connected

Finances and disclosures

  • Price:$7,800,000
  • Price per sq. ft.:$835.12
  • Tax amount:$32,248 (2025)
MLS LogoListings courtesy of Northwest MLS as distributed by MLS GRID. Based on information submitted to the MLS GRID as of January 31, 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.

New listings near 7909 78th Avenue Se