20 William St
Rockville Centre, NY 11570
3 bd 2 ba 1,552 sqft Built 1927 Lot 4,000 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 | $364 | $214 | $578 | $6,372 |
| 2022 | $364 | $214 | $578 | $4,630 |
| 2021 | $406 | $239 | $645 | $4,547 |
| 2020 | $399 | $235 | $634 | $3,498 |
| 2019 | $1 | $851 | $852 | $8,109 |
| 2018 | $23 | $886 | $909 | $11,992 |
| 2016 | $325 | $886 | $1,211 | $15,157 |
| 2015 | $325 | $886 | $1,211 | $13,419 |
| 2014 | $325 | $886 | $1,211 | $11,439 |
| 2013 | $325 | $886 | $1,211 | $10,387 |
| 2011 | $336 | $1,151 | $1,487 | $10,441 |
| 2010 | $328 | $1,151 | $1,479 | $10,538 |
| 2009 | $598 | $1,151 | $1,749 | $10,132 |
| 2007 | $528 | $1,151 | $1,679 | $9,524 |
Property facts
Year built
1927
Property type
single_family
Stories
—
Beds
3
Baths
2
Living area
1,552 sqft
Lot size
4,000 sqft
ZIP code
11570
City
Rockville Centre
Street
William St
Coordinates
40.66606, -73.63294
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 20 William St last sell?
No public-record sale is on file for 20 William St.
What is the current tax assessment for 20 William St?
The most recent total assessment for 20 William St (year 2024) is $578 with $6,372 in property tax.
When was 20 William St built?
20 William St was built in 1927.
How does 20 William St compare to others on William St?
We track 6 other properties on William St. Browse the list under "Other properties on William St" to compare beds, baths, and sale history.
What are the property facts for 20 William St?
20 William St is a 3 bed, 2 bath, 1,552 sqft, 4,000 sqft lot single_family.
Is 20 William St a flip candidate?
No — 20 William St does not appear in our flips dataset.
Is 20 William St a tax-appeal candidate?
No — 20 William St 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
-9.9%
2026 Q1
$631.2K
2026 Q2
$612.5K
ZIP 11570 — Median Price History + Forecast
Explore nearby
Geography
Other properties on William St