31 William St
Copiague, NY 11726
1 ba 1,344 sqft Built 1950 Lot 9,490 sqft single_family
Most recent sale
$500,000
Jan 4, 2023
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Apr 11, 2024 | Price changed | $549,999 | OneKeyMLS |
| Mar 29, 2024 | Price changed | $564,000 | OneKeyMLS |
| Feb 20, 2024 | Listed | $599,000 | OneKeyMLS |
| Jan 4, 2023 | Sold | $500,000 | Public Record |
| Jun 27, 2022 | Sold | $500,000 | OneKeyMLS |
| Feb 17, 2022 | Sold | $340,000 | Public Record |
| Nov 24, 1999 | Sold | $146,000 | Public Record |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $2,100 | $330 | $2,430 | $9,399 |
| 2024 | $2,100 | $330 | $2,430 | $8,777 |
| 2023 | $2,100 | $330 | $2,430 | $8,372 |
| 2022 | $2,100 | $330 | $2,430 | $7,352 |
| 2021 | $2,100 | $330 | $2,430 | $7,100 |
| 2020 | $2,100 | $330 | $2,430 | $6,888 |
| 2018 | $2,100 | $330 | $2,430 | $6,724 |
| 2017 | $2,100 | $330 | $2,430 | $6,426 |
| 2016 | $2,100 | $330 | $2,430 | $6,385 |
| 2015 | $2,100 | $330 | $2,430 | $6,450 |
| 2014 | $2,100 | $330 | $2,430 | $6,304 |
| 2013 | $2,100 | $330 | $2,430 | $6,305 |
| 2012 | $2,100 | $330 | $2,430 | $5,990 |
| 2011 | $2,100 | $330 | $2,430 | $5,838 |
| 2010 | $2,100 | $330 | $2,430 | $5,696 |
| 2008 | $2,100 | $330 | $2,430 | $5,479 |
| 2007 | $2,100 | $330 | $2,430 | $5,224 |
| 2006 | $2,100 | $330 | $2,430 | $5,027 |
Property facts
Year built
1950
Property type
single_family
Stories
—
Beds
—
Baths
1
Living area
1,344 sqft
Lot size
9,490 sqft
ZIP code
11726
City
Copiague
Street
William St
Coordinates
40.67167, -73.39790
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 31 William St last sell?
31 William St most recently sold on Jan 4, 2023 for $500,000.
What is the current tax assessment for 31 William St?
The most recent total assessment for 31 William St (year 2025) is $2,430 with $9,399 in property tax.
How does 31 William St's assessment compare to its last sale price?
The current assessment is 99.5% below the last sale price of $500,000.
When was 31 William St built?
31 William St was built in 1950.
How does 31 William St compare to others on William St?
We track 8 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 31 William St?
31 William St is a 1 bath, 1,344 sqft, 9,490 sqft lot single_family.
Is 31 William St a flip candidate?
Yes — 31 William St appears in our flips dataset, indicating it sold twice within a short window with a notable price change.
Is 31 William St a tax-appeal candidate?
No — 31 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
+4.7%
Implied 1-yr
+18.9%
2026 Q3
$756.7K
2026 Q4
$784.1K
ZIP 11726 — Median Price History + Forecast
Explore nearby
Geography
Other properties on William St