Nassau County and Oyster Bay Town property records for 19 addresses on Winthrop Ave, Syosset, NY · Last verified October 2026
| Properties | 19 |
|---|---|
| Median Sale Price | $652,000 |
| Deeds and Mortgages on File | 12 |
| Median Price per Sqft | $410 |
| Owner Occupied | 95% |
| Median Annual Tax Bill | $17,894 |
| Median Year Built | 1952 |
| Median Ownership Tenure | 14 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1 Winthrop Ave |
2 ba · 1,159 sqft built 1950 · 0.179 acres | $200,000 Aug 1998 | $14,283 2025 | Assessor Updated Jun 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
2 Winthrop Ave |
4 bd · 3 ba · 1,655 sqft built 1950 · 0.284 acres | $440,000 Jan 2016 | $19,562 2025 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
3 Winthrop Ave |
3 ba · 1,990 sqft built 1950 · 0.241 acres | $652,000 Oct 2018 | $20,629 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
5 Winthrop Ave |
1.5 ba · 1,224 sqft built 1950 · 0.303 acres | $520,000 Feb 2023 | $13,313 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
6 Winthrop Ave |
2 ba · 1,337 sqft built 1950 · 0.242 acres | $548,888 Oct 2016 | $17,112 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
7 Winthrop Ave |
2 ba · 1,159 sqft built 1950 · 0.27 acres | $12,932 2025 | Assessor + 1 Document Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
8 Winthrop Ave |
2 ba · 1,224 sqft built 1950 · 0.176 acres | $12,596 2025 | Assessor Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9 Winthrop Ave |
1 ba · 1,142 sqft built 1950 · 0.227 acres | $10,346 2025 | Assessor Updated Jun 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
10 Winthrop Ave |
2 ba · 1,556 sqft built 1952 · 0.163 acres | $19,813 2025 | Assessor Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
11 Winthrop Ave |
3 ba · 2,284 sqft built 1952 · 0.214 acres | $760,000 Feb 2024 | $18,902 2025 | Assessor + 1 Document Updated Jun 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
14 Winthrop Ave |
2 ba · 1,654 sqft built 1952 · 0.157 acres | $780,000 Jun 2021 | $18,538 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
15 Winthrop Ave |
4 bd · 2 ba · 1,902 sqft built 1952 · 0.213 acres | $405,000 Oct 2011 | $17,423 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
16 Winthrop Ave |
2 ba · 1,533 sqft built 1952 · 0.158 acres | $675,000 May 2018 | $17,929 2025 | Assessor + 3 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
17 Winthrop Ave |
1 ba · 1,226 sqft built 1952 · 0.213 acres | $220,000 Sep 1996 | $16,888 2025 | Assessor Updated Jun 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
18 Winthrop Ave |
3 ba · 2,248 sqft built 1952 · 0.168 acres | $545,000 Jan 2010 | $19,719 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
19 Winthrop Ave |
1 ba · 1,563 sqft built 1952 · 0.206 acres | $175,000 Jan 1997 | $17,866 2025 | Assessor Updated Jun 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
20 Winthrop Ave |
2 ba · 2,536 sqft built 1952 · 0.223 acres | $405,000 Jun 2001 | $22,635 2025 | Assessor Updated Jun 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
21 Winthrop Ave |
2 ba · 2,165 sqft built 1952 · 0.229 acres | $527,000 Apr 2007 | $19,715 2025 | Assessor Updated Jun 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
22 Winthrop Ave |
2 ba · 2,049 sqft built 1952 · 0.213 acres | $430,000 Dec 2012 | $17,894 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |