731 River St
Mamaroneck, NY 10543
4 bd 3 ba 1,885 sqft Built 1930 Lot 10,454 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 | $474,400 | $400,600 | $875,000 | $19,700 |
| 2024 | $408,000 | $400,600 | $808,600 | $19,247 |
| 2023 | $366,300 | $381,500 | $747,800 | $14,177 |
| 2022 | $304,600 | $381,500 | $686,100 | $13,970 |
| 2021 | $304,600 | $381,500 | $686,100 | $18,276 |
| 2020 | $306,800 | $310,400 | $617,200 | $15,990 |
| 2018 | $308,400 | $304,200 | $612,600 | $18,029 |
| 2017 | $306,000 | $303,400 | $609,400 | $15,711 |
| 2016 | $290,500 | $254,700 | $545,200 | $13,708 |
| 2015 | $264,500 | $252,400 | $516,900 | $13,632 |
| 2014 | $264,500 | $232,900 | $497,400 | $18,111 |
| 2013 | $260,800 | $232,900 | $493,700 | $168,942 |
| 2012 | $254,900 | $232,900 | $487,800 | $16,314 |
| 2011 | $327,700 | $232,800 | $560,500 | $2,439 |
| 2008 | $359,800 | $255,600 | $615,400 | $9,503 |
| 2007 | $342,900 | $255,600 | $598,500 | $7,265 |
Property facts
Year built
1930
Property type
single_family
Stories
2
Beds
4
Baths
3
Living area
1,885 sqft
Lot size
10,454 sqft
ZIP code
10543
City
Mamaroneck
Street
River St
Coordinates
40.96185, -73.73206
Comparable properties nearby
Frequently asked questions
When did 731 River St last sell?
No public-record sale is on file for 731 River St.
What is the current tax assessment for 731 River St?
The most recent total assessment for 731 River St (year 2025) is $875,000 with $19,700 in property tax.
When was 731 River St built?
731 River St was built in 1930.
How does 731 River St compare to others on River St?
We track 1 other property on River St. Browse the list under "Other properties on River St" to compare beds, baths, and sale history.
What are the property facts for 731 River St?
731 River St is a 4 bed, 3 bath, 1,885 sqft, 10,454 sqft lot single_family.
Is 731 River St a flip candidate?
No — 731 River St does not appear in our flips dataset.
Is 731 River St a tax-appeal candidate?
No — 731 River 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 River St