4021 91st Ave
Mercer Island, WA 98040
5 bd 4 ba 3,680 sqft Built 2015 Lot 9,448 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 | $1,767,000 | $1,268,000 | $3,035,000 | $19,264 |
| 2024 | $1,771,000 | $1,170,000 | $2,941,000 | $19,020 |
| 2023 | $1,847,000 | $1,242,000 | $3,089,000 | $18,951 |
| 2022 | $1,286,000 | $1,023,000 | $2,309,000 | $17,008 |
| 2021 | $1,064,000 | $975,000 | $2,039,000 | $16,326 |
| 2020 | $1,441,000 | $809,000 | $2,250,000 | $17,777 |
| 2019 | $1,409,000 | $794,000 | $2,203,000 | $16,558 |
| 2018 | $1,270,000 | $718,000 | $1,988,000 | $17,250 |
| 2017 | $1,446,000 | $657,000 | $2,103,000 | $17,117 |
| 2016 | $1,310,000 | $595,000 | $1,905,000 | $15,924 |
| 2015 | $49,000 | $550,000 | $599,000 | $5,248 |
| 2014 | $39,000 | $501,000 | $540,000 | $4,938 |
| 2013 | $36,000 | $462,000 | $498,000 | $4,709 |
| 2012 | $7,000 | $509,000 | $516,000 | $4,472 |
| 2011 | $8,000 | $524,000 | $532,000 | $4,435 |
| 2009 | $10,000 | $650,000 | $660,000 | $4,556 |
| 2007 | $155,000 | $402,000 | $557,000 | $3,467 |
Property facts
Year built
2015
Property type
single_family
Stories
2
Beds
5
Baths
4
Living area
3,680 sqft
Lot size
9,448 sqft
ZIP code
98040
City
Mercer Island
Street
91st Ave
Coordinates
47.57389, -122.21791
Comparable properties nearby
Frequently asked questions
When did 4021 91st Ave last sell?
No public-record sale is on file for 4021 91st Ave.
What is the current tax assessment for 4021 91st Ave?
The most recent total assessment for 4021 91st Ave (year 2025) is $3,035,000 with $19,264 in property tax.
When was 4021 91st Ave built?
4021 91st Ave was built in 2015.
How does 4021 91st Ave compare to others on 91st Ave?
We track 8 other properties on 91st Ave. Browse the list under "Other properties on 91st Ave" to compare beds, baths, and sale history.
What are the property facts for 4021 91st Ave?
4021 91st Ave is a 5 bed, 4 bath, 3,680 sqft, 9,448 sqft lot single_family.
Is 4021 91st Ave a flip candidate?
No — 4021 91st Ave does not appear in our flips dataset.
Is 4021 91st Ave a tax-appeal candidate?
No — 4021 91st 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 91st Ave