21 Gainsboro Ln
Syosset, NY 11791
3 bd 1 ba 1,062 sqft Built 1953 Lot 7,100 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 | $769 | $338 | $1,107 | $15,919 |
| 2022 | $769 | $338 | $1,107 | $6,184 |
| 2021 | — | $330 | $330 | $8,172 |
| 2020 | $175 | $330 | $505 | $11,559 |
| 2019 | $1 | $564 | $565 | $8,502 |
| 2018 | $1 | $601 | $602 | $8,534 |
| 2016 | $1 | $639 | $640 | $8,721 |
| 2015 | $51 | $702 | $753 | $8,907 |
| 2014 | — | $845 | $845 | $8,731 |
| 2013 | $116 | $845 | $961 | $8,872 |
| 2011 | $116 | $845 | $961 | $9,444 |
| 2010 | $175 | $845 | $1,020 | $9,284 |
| 2009 | $415 | $714 | $1,129 | $8,587 |
| 2007 | $380 | $845 | $1,225 | $9,077 |
Property facts
Year built
1953
Property type
single_family
Stories
—
Beds
3
Baths
1
Living area
1,062 sqft
Lot size
7,100 sqft
ZIP code
11791
City
Syosset
Street
Gainsboro Ln
Coordinates
40.79671, -73.49920
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21 Gainsboro Ln last sell?
No public-record sale is on file for 21 Gainsboro Ln.
What is the current tax assessment for 21 Gainsboro Ln?
The most recent total assessment for 21 Gainsboro Ln (year 2024) is $1,107 with $15,919 in property tax.
When was 21 Gainsboro Ln built?
21 Gainsboro Ln was built in 1953.
How does 21 Gainsboro Ln compare to others on Gainsboro Ln?
We track 8 other properties on Gainsboro Ln. Browse the list under "Other properties on Gainsboro Ln" to compare beds, baths, and sale history.
What are the property facts for 21 Gainsboro Ln?
21 Gainsboro Ln is a 3 bed, 1 bath, 1,062 sqft, 7,100 sqft lot single_family.
Is 21 Gainsboro Ln a flip candidate?
No — 21 Gainsboro Ln does not appear in our flips dataset.
Is 21 Gainsboro Ln a tax-appeal candidate?
No — 21 Gainsboro Ln 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
ZIP 11791 — Median Price History + Forecast
Explore nearby
Geography
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