21 Knoll Ln
Smithtown, NY 11787
4 bd 3 ba 2,012 sqft Built 1970 Lot 10,890 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 | $5,400 | $300 | $5,700 | $15,141 |
| 2024 | $5,400 | $300 | $5,700 | $14,764 |
| 2023 | $5,400 | $300 | $5,700 | $14,473 |
| 2022 | $5,400 | $300 | $5,700 | $14,352 |
| 2021 | $5,400 | $300 | $5,700 | $14,122 |
| 2020 | $5,400 | $300 | $5,700 | $14,072 |
| 2018 | $5,400 | $300 | $5,700 | $13,684 |
| 2017 | $5,400 | $300 | $5,700 | $12,100 |
| 2016 | $5,400 | $300 | $5,700 | $11,963 |
| 2015 | $5,400 | $300 | $5,700 | $11,835 |
| 2014 | $5,400 | $300 | $5,700 | $11,615 |
| 2013 | $5,400 | $300 | $5,700 | $11,353 |
| 2012 | $5,600 | $300 | $5,900 | $11,353 |
| 2011 | $5,600 | $300 | $5,900 | $11,132 |
| 2010 | $5,600 | $300 | $5,900 | $10,563 |
| 2008 | $6,235 | $300 | $6,535 | $11,420 |
| 2007 | $6,235 | $300 | $6,535 | $11,213 |
| 2006 | $6,235 | $300 | $6,535 | $10,643 |
Property facts
Year built
1970
Property type
single_family
Stories
—
Beds
4
Baths
3
Living area
2,012 sqft
Lot size
10,890 sqft
ZIP code
11787
City
Smithtown
Street
Knoll Ln
Coordinates
40.85854, -73.24406
Comparable properties nearby
Frequently asked questions
When did 21 Knoll Ln last sell?
No public-record sale is on file for 21 Knoll Ln.
What is the current tax assessment for 21 Knoll Ln?
The most recent total assessment for 21 Knoll Ln (year 2025) is $5,700 with $15,141 in property tax.
When was 21 Knoll Ln built?
21 Knoll Ln was built in 1970.
How does 21 Knoll Ln compare to others on Knoll Ln?
We track 1 other property on Knoll Ln. Browse the list under "Other properties on Knoll Ln" to compare beds, baths, and sale history.
What are the property facts for 21 Knoll Ln?
21 Knoll Ln is a 4 bed, 3 bath, 2,012 sqft, 10,890 sqft lot single_family.
Is 21 Knoll Ln a flip candidate?
No — 21 Knoll Ln does not appear in our flips dataset.
Is 21 Knoll Ln a tax-appeal candidate?
No — 21 Knoll 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
-0.4%
Implied 1-yr
-1.4%
2026 Q3
$777.7K
2026 Q4
$775K
ZIP 11787 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Knoll Ln