21 South St
Marlboro, NY 12542
3 bd 2 ba 1,434 sqft Built 1870 Lot 13,068 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 | $102,200 | $61,500 | $163,700 | $7,089 |
| 2024 | $102,200 | $61,500 | $163,700 | $6,983 |
| 2023 | $102,200 | $61,500 | $163,700 | $6,895 |
| 2022 | $102,200 | $61,500 | $163,700 | $7,208 |
| 2021 | $102,200 | $61,500 | $163,700 | $7,163 |
| 2020 | $102,200 | $61,500 | $163,700 | $7,481 |
| 2017 | $102,200 | $61,500 | $163,700 | $11,673 |
| 2016 | $98,800 | $61,500 | $160,300 | $11,870 |
| 2015 | $98,800 | $61,500 | $160,300 | $6,780 |
| 2014 | $98,800 | $61,500 | $160,300 | $6,900 |
| 2013 | $114,600 | $61,500 | $176,100 | $6,174 |
| 2012 | $114,600 | $61,500 | $176,100 | $5,401 |
| 2011 | $133,000 | $61,500 | $194,500 | $5,432 |
| 2010 | $147,900 | $68,000 | $215,900 | $6,171 |
| 2009 | $171,800 | $68,000 | $239,800 | $6,005 |
| 2007 | $142,600 | $46,000 | $188,600 | $4,616 |
Property facts
Year built
1870
Property type
single_family
Stories
2
Beds
3
Baths
2
Living area
1,434 sqft
Lot size
13,068 sqft
ZIP code
12542
City
Marlboro
Street
South St
Coordinates
41.59949, -73.97909
Comparable properties nearby
Frequently asked questions
When did 21 South St last sell?
No public-record sale is on file for 21 South St.
What is the current tax assessment for 21 South St?
The most recent total assessment for 21 South St (year 2025) is $163,700 with $7,089 in property tax.
When was 21 South St built?
21 South St was built in 1870.
How does 21 South St compare to others on South St?
We track 8 other properties on South St. Browse the list under "Other properties on South St" to compare beds, baths, and sale history.
What are the property facts for 21 South St?
21 South St is a 3 bed, 2 bath, 1,434 sqft, 13,068 sqft lot single_family.
Is 21 South St a flip candidate?
No — 21 South St does not appear in our flips dataset.
Is 21 South St a tax-appeal candidate?
No — 21 South 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
-0.9%
Implied 1-yr
-3.5%
2026 Q2
$492.8K
2026 Q3
$492.8K
ZIP 12542 — Median Price History + Forecast
Explore nearby
Geography
Other properties on South St