4421 Forest Ave
Mercer Island, WA 98040
4 bd 5 ba 4,596 sqft Built 2003 Lot 16,553 sqft single_family
No recorded sales
Location
Timeline: Sale, Listing & Tax History
Recorded events
No recorded events
No sale or listing events are on file for this property.
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $3,700,000 | $4,882,000 | $8,582,000 | $53,914 |
| 2024 | $3,797,000 | $4,439,000 | $8,236,000 | $53,234 |
| 2023 | $3,938,000 | $4,712,000 | $8,650,000 | $53,034 |
| 2022 | $2,586,000 | $3,879,000 | $6,465,000 | $47,591 |
| 2021 | $2,013,000 | $3,695,000 | $5,708,000 | $45,673 |
| 2020 | $1,968,000 | $3,305,000 | $5,273,000 | $41,639 |
| 2019 | $1,920,000 | $3,241,000 | $5,161,000 | $38,771 |
| 2018 | $1,864,000 | $3,117,000 | $4,981,000 | $43,202 |
| 2017 | $1,785,000 | $2,850,000 | $4,635,000 | $37,712 |
| 2016 | $1,618,000 | $2,580,000 | $4,198,000 | $35,078 |
| 2015 | $1,480,000 | $2,385,000 | $3,865,000 | $33,797 |
| 2014 | $1,575,000 | $2,503,000 | $4,078,000 | $37,247 |
| 2013 | $1,626,000 | $2,555,000 | $4,181,000 | $39,481 |
| 2012 | $1,785,000 | $2,814,000 | $4,599,000 | $39,823 |
| 2011 | $1,837,000 | $2,897,000 | $4,734,000 | $39,439 |
| 2009 | $2,095,000 | $3,300,000 | $5,395,000 | $37,162 |
| 2007 | $1,402,000 | $1,744,000 | $3,146,000 | $22,060 |
Property facts
Year built
2003
Property type
single_family
Stories
—
Beds
4
Baths
5
Living area
4,596 sqft
Lot size
16,553 sqft
ZIP code
98040
City
Mercer Island
Street
Forest Ave
Coordinates
47.56695, -122.23284
Comparable properties nearby
Frequently asked questions
When did 4421 Forest Ave last sell?
No public-record sale is on file for 4421 Forest Ave.
What is the current tax assessment for 4421 Forest Ave?
The most recent total assessment for 4421 Forest Ave (year 2025) is $8,582,000 with $53,914 in property tax.
When was 4421 Forest Ave built?
4421 Forest Ave was built in 2003.
How does 4421 Forest Ave compare to others on Forest Ave?
We track 8 other properties on Forest Ave. Browse the list under "Other properties on Forest Ave" to compare beds, baths, and sale history.
What are the property facts for 4421 Forest Ave?
4421 Forest Ave is a 4 bed, 5 bath, 4,596 sqft, 16,553 sqft lot single_family.
Is 4421 Forest Ave a flip candidate?
No — 4421 Forest Ave does not appear in our flips dataset.
Is 4421 Forest Ave a tax-appeal candidate?
No — 4421 Forest Ave is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+3.8%
Implied 1-yr
+15.2%
2026 Q3
$3.48M
2026 Q4
$3.59M
ZIP 98040 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Forest Ave