8240 31st St
Mercer Island, WA 98040
4 bd 5 ba 4,140 sqft Built 2018 Lot 11,455 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 | $2,393,000 | $1,425,000 | $3,818,000 | $25,840 |
| 2024 | $2,630,000 | $1,316,000 | $3,946,000 | $25,515 |
| 2023 | $2,747,000 | $1,398,000 | $4,145,000 | $25,423 |
| 2022 | $1,947,000 | $1,151,000 | $3,098,000 | $22,814 |
| 2021 | $1,639,000 | $1,097,000 | $2,736,000 | $21,901 |
| 2020 | $1,849,000 | $884,000 | $2,733,000 | $21,589 |
| 2019 | $1,808,000 | $867,000 | $2,675,000 | $20,100 |
| 2018 | — | $784,000 | $784,000 | $6,808 |
Property facts
Year built
2018
Property type
single_family
Stories
2
Beds
4
Baths
5
Living area
4,140 sqft
Lot size
11,455 sqft
ZIP code
98040
City
Mercer Island
Street
31st St
Coordinates
47.58262, -122.22874
Comparable properties nearby
Frequently asked questions
When did 8240 31st St last sell?
No public-record sale is on file for 8240 31st St.
What is the current tax assessment for 8240 31st St?
The most recent total assessment for 8240 31st St (year 2025) is $3,818,000 with $25,840 in property tax.
When was 8240 31st St built?
8240 31st St was built in 2018.
How does 8240 31st St compare to others on 31st St?
We track 2 other properties on 31st St. Browse the list under "Other properties on 31st St" to compare beds, baths, and sale history.
What are the property facts for 8240 31st St?
8240 31st St is a 4 bed, 5 bath, 4,140 sqft, 11,455 sqft lot single_family.
Is 8240 31st St a flip candidate?
No — 8240 31st St does not appear in our flips dataset.
Is 8240 31st St a tax-appeal candidate?
No — 8240 31st St 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 31st St