21 Knolls Dr
Stony Brook, NY 11790
— ba Lot 1,307 sqft condo
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 | $918 | $200 | $1,118 | $5,273 |
| 2024 | $918 | $200 | $1,118 | $4,923 |
| 2023 | $918 | $200 | $1,118 | $4,873 |
| 2022 | $918 | $200 | $1,118 | $4,757 |
| 2021 | $918 | $200 | $1,118 | $4,712 |
| 2020 | $918 | $200 | $1,118 | $4,592 |
| 2018 | $918 | $200 | $1,118 | $4,468 |
| 2017 | $918 | $200 | $1,118 | $1,958 |
| 2016 | $918 | $200 | $1,118 | $1,930 |
| 2015 | $918 | $200 | $1,118 | $1,874 |
| 2014 | $918 | $200 | $1,118 | $1,806 |
| 2013 | $918 | $200 | $1,118 | $1,735 |
| 2012 | $918 | $200 | $1,118 | $1,661 |
| 2011 | $1,103 | $200 | $1,303 | $2,228 |
| 2010 | $1,103 | $200 | $1,303 | $2,084 |
| 2008 | $1,103 | $200 | $1,303 | $1,971 |
| 2007 | $1,103 | $200 | $1,303 | $2,673 |
| 2006 | $1,103 | $200 | $1,303 | $2,475 |
Property facts
Year built
—
Property type
condo
Stories
—
Beds
—
Baths
—
Living area
—
Lot size
1,307 sqft
ZIP code
11790
City
Stony Brook
Street
Knolls Dr
Coordinates
40.89151, -73.11771
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21 Knolls Dr last sell?
No public-record sale is on file for 21 Knolls Dr.
What is the current tax assessment for 21 Knolls Dr?
The most recent total assessment for 21 Knolls Dr (year 2025) is $1,118 with $5,273 in property tax.
When was 21 Knolls Dr built?
The year built for 21 Knolls Dr is not in our records.
How does 21 Knolls Dr compare to others on Knolls Dr?
We track 8 other properties on Knolls Dr. Browse the list under "Other properties on Knolls Dr" to compare beds, baths, and sale history.
What are the property facts for 21 Knolls Dr?
21 Knolls Dr is a — bath, 1,307 sqft lot condo.
Is 21 Knolls Dr a flip candidate?
No — 21 Knolls Dr does not appear in our flips dataset.
Is 21 Knolls Dr a tax-appeal candidate?
No — 21 Knolls Dr is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+11.7%
Implied 1-yr
+46.8%
2026 Q2
$2.7M
2026 Q3
$2.7M
ZIP 11790 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Knolls Dr