6421 77th Ave
Mercer Island, WA 98040
4 bd 4 ba 4,520 sqft Built 1948 Lot 28,200 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 | $1,903,000 | $6,601,000 | $8,504,000 | $50,347 |
| 2024 | $1,690,000 | $6,001,000 | $7,691,000 | $49,711 |
| 2023 | $1,708,000 | $6,370,000 | $8,078,000 | $49,529 |
| 2022 | $641,000 | $5,243,000 | $5,884,000 | $43,316 |
| 2021 | $201,000 | $4,994,000 | $5,195,000 | $41,570 |
| 2020 | $267,000 | $4,757,000 | $5,024,000 | $39,673 |
| 2019 | $254,000 | $4,664,000 | $4,918,000 | $36,946 |
| 2018 | $262,000 | $4,485,000 | $4,747,000 | $41,173 |
| 2017 | $173,000 | $4,100,000 | $4,273,000 | $34,767 |
| 2016 | $159,000 | $3,711,000 | $3,870,000 | $32,338 |
| 2015 | $133,000 | $3,430,000 | $3,563,000 | $31,157 |
| 2014 | $96,000 | $3,306,000 | $3,402,000 | $31,074 |
| 2013 | $114,000 | $3,374,000 | $3,488,000 | $32,938 |
| 2012 | $119,000 | $3,716,000 | $3,835,000 | $33,213 |
| 2011 | $122,000 | $3,825,000 | $3,947,000 | $32,889 |
| 2009 | $141,000 | $4,357,000 | $4,498,000 | $30,986 |
| 2007 | $846,000 | $4,132,000 | $4,978,000 | $32,129 |
Property facts
Year built
1948
Property type
single_family
Stories
1
Beds
4
Baths
4
Living area
4,520 sqft
Lot size
28,200 sqft
ZIP code
98040
City
Mercer Island
Street
77th Ave
Coordinates
47.54520, -122.23639
Comparable properties nearby
Frequently asked questions
When did 6421 77th Ave last sell?
No public-record sale is on file for 6421 77th Ave.
What is the current tax assessment for 6421 77th Ave?
The most recent total assessment for 6421 77th Ave (year 2025) is $8,504,000 with $50,347 in property tax.
When was 6421 77th Ave built?
6421 77th Ave was built in 1948.
How does 6421 77th Ave compare to others on 77th Ave?
We track 7 other properties on 77th Ave. Browse the list under "Other properties on 77th Ave" to compare beds, baths, and sale history.
What are the property facts for 6421 77th Ave?
6421 77th Ave is a 4 bed, 4 bath, 4,520 sqft, 28,200 sqft lot single_family.
Is 6421 77th Ave a flip candidate?
No — 6421 77th Ave does not appear in our flips dataset.
Is 6421 77th Ave a tax-appeal candidate?
No — 6421 77th 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 77th Ave