21 Riverside Ave
Massapequa, NY 11758
4 bd 1 ba Built 1950 Lot 6,000 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 | $252 | $188 | $440 | $11,567 |
| 2022 | $252 | $188 | $440 | $11,116 |
| 2021 | $252 | $188 | $440 | $13,225 |
| 2020 | $243 | $181 | $424 | $9,896 |
| 2019 | $132 | $714 | $846 | $10,278 |
| 2018 | $132 | $714 | $846 | $12,024 |
| 2016 | $132 | $714 | $846 | $10,526 |
| 2015 | $132 | $714 | $846 | $9,730 |
| 2014 | $132 | $714 | $846 | $7,537 |
| 2013 | $160 | $714 | $874 | $6,862 |
| 2011 | $160 | $714 | $874 | $6,199 |
| 2010 | $183 | $714 | $897 | $6,774 |
| 2009 | $394 | $714 | $1,108 | $6,668 |
| 2007 | $332 | $714 | $1,046 | $5,865 |
Property facts
Year built
1950
Property type
single_family
Stories
2
Beds
4
Baths
1
Living area
—
Lot size
6,000 sqft
ZIP code
11758
City
Massapequa
Street
Riverside Ave
Coordinates
40.66976, -73.48143
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21 Riverside Ave last sell?
No public-record sale is on file for 21 Riverside Ave.
What is the current tax assessment for 21 Riverside Ave?
The most recent total assessment for 21 Riverside Ave (year 2024) is $440 with $11,567 in property tax.
When was 21 Riverside Ave built?
21 Riverside Ave was built in 1950.
How does 21 Riverside Ave compare to others on Riverside Ave?
We track 8 other properties on Riverside Ave. Browse the list under "Other properties on Riverside Ave" to compare beds, baths, and sale history.
What are the property facts for 21 Riverside Ave?
21 Riverside Ave is a 4 bed, 1 bath, 6,000 sqft lot single_family.
Is 21 Riverside Ave a flip candidate?
No — 21 Riverside Ave does not appear in our flips dataset.
Is 21 Riverside Ave a tax-appeal candidate?
No — 21 Riverside 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
+2.5%
Implied 1-yr
+10.0%
2026 Q1
$1.14M
2026 Q2
$1.16M
ZIP 11758 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Riverside Ave