517 Walnut St
Mamaroneck, NY 10543
5 bd 4 ba 2,128 sqft Built 1949 Lot 6,232 sqft multi_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 | $827,900 | $369,300 | $1,197,200 | $27,778 |
| 2024 | $770,900 | $369,300 | $1,140,200 | $26,619 |
| 2023 | $692,400 | $351,700 | $1,044,100 | $19,794 |
| 2022 | $403,800 | $351,700 | $755,500 | $15,383 |
| 2021 | $339,300 | $351,700 | $691,000 | $17,674 |
| 2020 | $335,800 | $282,400 | $618,200 | $13,591 |
| 2018 | $328,100 | $277,600 | $605,700 | $12,141 |
| 2017 | $325,500 | $275,300 | $600,800 | $9,907 |
| 2016 | $362,000 | $257,300 | $619,300 | $13,728 |
| 2015 | $263,500 | $222,900 | $486,400 | $10,849 |
| 2014 | $263,500 | $215,500 | $479,000 | $15,272 |
| 2013 | $267,000 | $215,500 | $482,500 | $165,109 |
| 2012 | $347,200 | $215,500 | $562,700 | $18,819 |
| 2011 | $392,600 | $186,400 | $579,000 | $2,520 |
| 2008 | $454,300 | $218,900 | $673,200 | $10,395 |
| 2007 | $449,600 | $218,900 | $668,500 | $7,582 |
Property facts
Year built
1949
Property type
multi_family
Stories
—
Beds
5
Baths
4
Living area
2,128 sqft
Lot size
6,232 sqft
ZIP code
10543
City
Mamaroneck
Street
Walnut St
Coordinates
40.95350, -73.72987
Comparable properties nearby
Frequently asked questions
When did 517 Walnut St last sell?
No public-record sale is on file for 517 Walnut St.
What is the current tax assessment for 517 Walnut St?
The most recent total assessment for 517 Walnut St (year 2025) is $1,197,200 with $27,778 in property tax.
When was 517 Walnut St built?
517 Walnut St was built in 1949.
How does 517 Walnut St compare to others on Walnut St?
We track 1 other property on Walnut St. Browse the list under "Other properties on Walnut St" to compare beds, baths, and sale history.
What are the property facts for 517 Walnut St?
517 Walnut St is a 5 bed, 4 bath, 2,128 sqft, 6,232 sqft lot multi_family.
Is 517 Walnut St a flip candidate?
No — 517 Walnut St does not appear in our flips dataset.
Is 517 Walnut St a tax-appeal candidate?
No — 517 Walnut 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
-6.8%
Implied 1-yr
-27.2%
2026 Q3
$693.8K
2026 Q4
$693.8K
ZIP 10543 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Walnut St