21 1st St
Syosset, NY 11791
2 ba 1,256 sqft Built 1951 Lot 5,250 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 |
|---|---|---|---|---|
| 2024 | $272 | $301 | $573 | $17,795 |
| 2022 | $272 | $301 | $573 | $17,743 |
| 2021 | $272 | $301 | $573 | $18,283 |
| 2020 | $267 | $296 | $563 | $18,872 |
| 2019 | $131 | $906 | $1,037 | $19,379 |
| 2018 | $131 | $906 | $1,037 | $16,638 |
| 2016 | $131 | $906 | $1,037 | $14,967 |
| 2015 | $131 | $906 | $1,037 | $13,513 |
| 2014 | $131 | $906 | $1,037 | $12,496 |
| 2013 | $229 | $906 | $1,135 | $11,502 |
| 2011 | $216 | $853 | $1,069 | $11,705 |
| 2010 | $337 | $906 | $1,243 | $11,598 |
| 2009 | $505 | $906 | $1,411 | $10,965 |
| 2007 | $426 | $906 | $1,332 | $10,967 |
Property facts
Year built
1951
Property type
single_family
Stories
1
Beds
—
Baths
2
Living area
1,256 sqft
Lot size
5,250 sqft
ZIP code
11791
City
Syosset
Street
1st St
Coordinates
40.82708, -73.50641
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21 1st St last sell?
No public-record sale is on file for 21 1st St.
What is the current tax assessment for 21 1st St?
The most recent total assessment for 21 1st St (year 2024) is $573 with $17,795 in property tax.
When was 21 1st St built?
21 1st St was built in 1951.
How does 21 1st St compare to others on 1st St?
We track 5 other properties on 1st St. Browse the list under "Other properties on 1st St" to compare beds, baths, and sale history.
What are the property facts for 21 1st St?
21 1st St is a 2 bath, 1,256 sqft, 5,250 sqft lot single_family.
Is 21 1st St a flip candidate?
No — 21 1st St does not appear in our flips dataset.
Is 21 1st St a tax-appeal candidate?
No — 21 1st 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
+2.9%
Implied 1-yr
+11.6%
2026 Q3
$1.84M
2026 Q4
$1.88M