Sold815d on marketHistoric · 92 yrs
4520 Ferncroft Road
Mercer Island, WA, 98040 • 98040 • King County
$4,150,000
$887/sqft
6Beds
7Baths
4,681Sqft
0.52 acLot
1934Built
Property DNA
Waterfront Property
Direct water access
Scenic Views
Lake · Territorial
Character Home
Built 1934 · 92 years of history
Mercer Island
98040
Outdoor Living
Hardwood · Wall to Wall Carpet · Second Kitchen · Bath Off Primary · Double Pane/Storm Window · Dining Room · French Doors · High Tech Cabling · Security System · Skylight(s) · SMART Wired · Vaulted Ceiling(s) · Walk-In Pantry · Wine Cellar · Fireplace · Water Heater
3 Fireplaces
Gas · Wood Burning · Lower Level: 1 · Main Level: 2 · Fireplace
Special Features
ADU Beds: 1 · ADU Baths: 1
4-Car Garage
Attached Carport · Driveway · Detached Garage
Market activity
Demand and pricing signals for this listing
34 views
People checking out this listing
815 days on market
Established listing
$887/sqft
Price per square foot
About this home
Single Family · Built 1934 · Historic
One of a Kind…This iconic Mercer Island estate offers breathtaking East facing Lake Washington vistas and seamlessly blends the charm from its original 1934 construction with modern amenities and exceptional custom updates. The historic main house offers a dramatic primary suite that spans the entire top floor, convenient main floor guest suite plus 2 additional bedrooms in the daylight basement. The storybook 1/2 acre+ grounds feature a tranquil creek with footbridge, generous lawn space, gardens and meandering pathways to appreciate this private setting. The detached carriage house also enjoys the same jaw dropping views and includes a full kitchen plus 3/4 bath-a perfect space for out of town guests, work from home or live-in au pair.
Estimated monthly payment
Based on current rates
$25,841/month
Principal & Interest$20,308
Property Tax$4,150
Insurance$1,383
Down payment20% ($830,000)
3%50%
Est. 6.19% rate · 30yr fixed · $3,320,000 loan
Full calculator →At a glance
Key facts and listing details
TypeSingle Family Residence
Year Built1934
HeatingFireplace, Forced Air, Heat Pump, Stove/Free Standing, Wall Unit(s), Electric, Natural Gas
Parking4 Garage spaces
Lot0.52 Acres
Property
Home typeSingle Family
Sub-typeSingle Family Residence
Year built1934
Stories2
Systems
HeatingFireplace, Forced Air, Heat Pump, Stove/Free Standing, Wall Unit(s), Electric, Natural Gas
RoofComposition
ConstructionStone, Wood Siding
Water / SewerPublic, Company: City of Mercer Island / Sewer Connected, Company: City of Mercer Island
Parking & Outdoor
ParkingAttached Carport, Driveway, Detached Garage
Garage4 spaces
BasementDaylight,Finished
Fireplaces3
Lot0.52 Acres
Location & Tax
Neighborhood98040
Annual tax$22,838
Parcel0046100504
Bathrooms & Fees
Full baths3
Features & details
13 categories of property features
Interior Features
Interior
Bath Off Primary
Dining Room
High Tech Cabling
Appliances
Double Oven
Dryer
Washer
Dishwasher
Garbage Disposal
Refrigerator
StoveRange
Water Heater: Gas
Water Heater Location: Lower Level (2)
Flooring
Hardwood
Marble
Travertine
Carpet
Heating
Fireplace
Forced Air
Heat Pump
Stove/Free Standing
Wall Unit(s)
Electric
Natural Gas
Fireplace
Gas
Wood Burning
Lower Level: 1
Main Level: 2
Fireplace
Windows
Double Pane/Storm Window
Skylight(s)
Exterior Features
Parking
Attached Carport
Driveway
Detached Garage
Construction
Stone
Wood Siding
Patio & Porch
Hardwood
Wall to Wall Carpet
Second Kitchen
Bath Off Primary
Double Pane/Storm Window
Dining Room
French Doors
High Tech Cabling
Security System
Skylight(s)
SMART Wired
Vaulted Ceiling(s)
Walk-In Pantry
Wine Cellar
Fireplace
Water Heater
Lot Features
Dead End Street
Paved
Cable TV
Deck
Fenced-Partially
Gas Available
High Speed Internet
Outbuildings
Patio
Sprinkler System
Security
Security System
Views
Lake
Territorial
Other Structures
ADU Beds: 1
ADU Baths: 1
Room details
23 rooms detailed
Master Bedroom
SecondBedroom
LowerBedroom
LowerBedroom
MainBedroom
MainBathroom Full
SecondListing insights
Market data and value estimates
StatusSold
Days on market815
Est. value$4,159,000
Est. rent$7,037/mo
Tax rate0.82%
Price/sqft$887
On marketNov 1, 2023
PostedSep 22, 2023
Last sold$4,150,000
MLS statusSold
MLS updatedJan 12, 2024
Tour days6
Views34
How are the schools in Mercer Island?
3 schools rated nearby
Location
Mercer Island, WA, 98040
Price history
7 events
DateEventPrice$/sqftSource
Jan 12, 2024Sold$4,150,000$887NWMLS as distributed by MLS GRID
Dec 3, 2023Pending Sale$4,388,000$937NWMLS as distributed by MLS GRID
Sep 22, 2023Listed For Sale$4,388,000$937NWMLS as distributed by MLS GRID
Jun 20, 2014Sold$2,027,000$433NWMLS as distributed by MLS GRID
May 24, 2014Pending Sale$2,188,000$467Coldwell Banker Bain
May 8, 2014Listed For Sale$2,188,000$467Coldwell Banker Bain
Oct 9, 2002Sold$1,065,000$228NWMLS as distributed by MLS GRID
Sold$4,150,000
Jan 12, 2024•$887/sqft•NWMLS as distributed by MLS GRID
Pending Sale$4,388,000
Dec 3, 2023•$937/sqft•NWMLS as distributed by MLS GRID
Listed For Sale$4,388,000
Sep 22, 2023•$937/sqft•NWMLS as distributed by MLS GRID
Sold$2,027,000
Jun 20, 2014•$433/sqft•NWMLS as distributed by MLS GRID
Pending Sale$2,188,000
May 24, 2014•$467/sqft•Coldwell Banker Bain
Listed For Sale$2,188,000
May 8, 2014•$467/sqft•Coldwell Banker Bain
Sold$1,065,000
Oct 9, 2002•$228/sqft•NWMLS as distributed by MLS GRID
Tax history
21 years of records
YearTax paidAssessed value
Apr 7, 2024$23,217$3,545,000
Apr 7, 2023$22,922$3,329,000
Apr 7, 2022—$3,723,000
Apr 7, 2021$19,974$2,712,000
Apr 7, 2020$19,174$2,395,000
Apr 7, 2019$18,772$2,376,000
Apr 7, 2018$17,482$2,326,000
Apr 7, 2017$18,421$2,123,000
Apr 7, 2016$14,235$1,943,000
Apr 7, 2015$14,235$1,760,000
Apr 7, 2014$14,235$1,627,000
Apr 7, 2013$14,235$1,143,000
Apr 7, 2012—$1,054,000
Apr 7, 2011—$1,041,000
Apr 7, 2010—$1,123,000
Apr 7, 2009—$1,123,000
Apr 7, 2007—$897,000
Apr 7, 2006—$832,000
Apr 7, 2005—$738,000
Apr 7, 2001$5,967$624,000
Apr 7, 2000$5,596$530,000
Nearby homes
Neighborhood details
Local context around this listing
Mercer Island, WA • King County
Nearby cities
AuburnBellevueBothellFederal WayKentKirklandRedmondRenton
Nearby zip codes
98040
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Based on information submitted to the MLS GRID as of 2026-04-07 07:28:28 PDT. 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. [Click here for more information](/mls-disclaimers/#39)
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