Nassau County and Oyster Bay Town property records for 7 addresses on 20th Ave, Sea Cliff, NY · Last verified October 2026
| Properties | 7 |
|---|---|
| Median Sale Price | $650,000 |
| Deeds and Mortgages on File | 8 |
| Median Price per Sqft | $493 |
| Owner Occupied | 100% |
| Median Annual Tax Bill | $11,156 |
| Median Year Built | 1898 |
| Median Ownership Tenure | 6 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4 20th Ave |
1 ba · 1,150 sqft built 1893 · 0.055 acres | $402,500 Oct 2004 | $8,154 2025 | Assessor Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
12 20th Ave |
2 ba · 1,260 sqft built 1926 · 0.11 acres | $888,000 Jul 2026 | $9,960 2026 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
18 20th Ave |
3.5 ba · 2,022 sqft built 1898 · 0.11 acres | $998,000 May 2019 | $12,398 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
31 20th Ave |
1 ba · 1,404 sqft built 1958 · 0.183 acres | $10,155 2025 | Assessor Updated Jun 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
35 20th Ave |
2 ba · 1,822 sqft built 1957 · 0.198 acres | $500,000 May 2021 | $12,522 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
46 20th Ave |
1 ba · 1,086 sqft built 1883 · 0.11 acres | $650,000 Jul 2020 | $11,156 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
65 20th Ave |
1.5 ba · 1,750 sqft built 1863 · 0.15 acres | $13,714 2025 | Assessor Updated Jun 2026 | Owner on File Owner Occupied |