19 William St
Sag Harbor, NY 11963
2 bd 2 ba 700 sqft Built 1991 Lot 4,792 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 | $101,700 | $756,800 | $858,500 | $1,192 |
| 2024 | $101,700 | $756,800 | $858,500 | $2,384 |
| 2023 | $104,400 | $756,800 | $861,200 | $2,368 |
| 2022 | $106,900 | $756,800 | $863,700 | $6,471 |
| 2021 | $106,900 | $756,800 | $863,700 | $6,765 |
| 2020 | $106,900 | $756,800 | $863,700 | $4,390 |
| 2018 | $81,500 | $756,800 | $838,300 | $4,573 |
| 2017 | $81,500 | $635,100 | $716,600 | $3,865 |
| 2016 | $81,500 | $635,100 | $716,600 | $4,023 |
| 2015 | $81,500 | $635,100 | $716,600 | $4,115 |
| 2014 | $81,500 | $635,100 | $716,600 | $4,246 |
| 2013 | $81,500 | $635,100 | $716,600 | $4,243 |
| 2012 | $81,500 | $635,100 | $716,600 | $4,131 |
| 2011 | $81,500 | $635,100 | $716,600 | $3,969 |
| 2010 | $81,500 | $635,100 | $716,600 | $3,812 |
| 2008 | $81,500 | $635,100 | $716,600 | $3,235 |
| 2007 | $81,500 | $635,100 | $716,600 | $3,289 |
| 2006 | $81,500 | $1,058,400 | $1,139,900 | $3,289 |
Property facts
Year built
1991
Property type
single_family
Stories
1
Beds
2
Baths
2
Living area
700 sqft
Lot size
4,792 sqft
ZIP code
11963
City
Sag Harbor
Street
William St
Coordinates
40.99551, -72.29198
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 19 William St last sell?
No public-record sale is on file for 19 William St.
What is the current tax assessment for 19 William St?
The most recent total assessment for 19 William St (year 2025) is $858,500 with $1,192 in property tax.
When was 19 William St built?
19 William St was built in 1991.
How does 19 William St compare to others on William St?
We track 3 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 19 William St?
19 William St is a 2 bed, 2 bath, 700 sqft, 4,792 sqft lot single_family.
Is 19 William St a flip candidate?
No — 19 William St does not appear in our flips dataset.
Is 19 William St a tax-appeal candidate?
No — 19 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
+1.2%
Implied 1-yr
+4.9%
2026 Q2
$3.7M
2026 Q3
$3.74M
ZIP 11963 — Median Price History + Forecast
Explore nearby
Geography
Other properties on William St