21 Washington Ave
Holtsville, NY 11742
— ba 3,062 sqft Built 1955 Lot 37,462 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 | $3,850 | $300 | $4,150 | $15,824 |
| 2024 | $3,850 | $300 | $4,150 | $15,105 |
| 2023 | $3,850 | $300 | $4,150 | $14,815 |
| 2022 | $3,850 | $300 | $4,150 | $24,972 |
| 2021 | $3,850 | $300 | $4,150 | $5,629 |
| 2020 | $3,850 | $300 | $4,150 | $5,630 |
| 2018 | $3,850 | $300 | $4,150 | $5,401 |
| 2017 | $3,850 | $300 | $4,150 | $5,209 |
| 2016 | $3,850 | $300 | $4,150 | $11,165 |
| 2015 | $3,850 | $300 | $4,150 | $11,722 |
| 2014 | $3,850 | $300 | $4,150 | $11,559 |
| 2013 | $3,850 | $300 | $4,150 | $9,216 |
| 2012 | $3,850 | $300 | $4,150 | $10,298 |
| 2011 | $3,850 | $300 | $4,150 | $4,567 |
| 2010 | $3,150 | $300 | $3,450 | $3,488 |
| 2008 | $3,150 | $300 | $3,450 | $7,514 |
| 2007 | $3,150 | $300 | $3,450 | $8,180 |
| 2006 | $3,150 | $300 | $3,450 | $7,118 |
Property facts
Year built
1955
Property type
single_family
Stories
—
Beds
—
Baths
—
Living area
3,062 sqft
Lot size
37,462 sqft
ZIP code
11742
City
Holtsville
Street
Washington Ave
Coordinates
40.83360, -73.05293
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21 Washington Ave last sell?
No public-record sale is on file for 21 Washington Ave.
What is the current tax assessment for 21 Washington Ave?
The most recent total assessment for 21 Washington Ave (year 2025) is $4,150 with $15,824 in property tax.
When was 21 Washington Ave built?
21 Washington Ave was built in 1955.
How does 21 Washington Ave compare to others on Washington Ave?
We track 8 other properties on Washington Ave. Browse the list under "Other properties on Washington Ave" to compare beds, baths, and sale history.
What are the property facts for 21 Washington Ave?
21 Washington Ave is a — bath, 3,062 sqft, 37,462 sqft lot single_family.
Is 21 Washington Ave a flip candidate?
No — 21 Washington Ave does not appear in our flips dataset.
Is 21 Washington Ave a tax-appeal candidate?
No — 21 Washington Ave 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
+1.5%
2026 Q2
$540.9K
2026 Q3
$542.9K
ZIP 11742 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Washington Ave