Nassau County and Oyster Bay Town property records for 4 addresses on William St, Massapequa, NY · Last verified October 2026
| Properties | 4 |
|---|---|
| Latest Sale | $862,500 (Feb 2018) |
| Deeds and Mortgages on File | 7 |
| Average Living Area | 1,249 sq ft |
| Owner Occupied | 100% |
| Median Annual Tax Bill | $12,809 |
| Median Year Built | 1953 |
| Average Ownership Tenure | 12 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
3.5 ba · 1,534 sqft · built 1926 · 0.137 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $350,000Feb 2011 | $12,8092025 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2026 |
1 ba · 1,110 sqft · built 1953 · 0.153 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $8,7182025 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Jun 2026 |
2 ba · 1,517 sqft · built 1953 · 0.153 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $550,000Jul 2026 | $26,5642026 | Owner on Record Owner Occupied | AssessorUpdated Oct 2026 |
3 ba · 838 sqft · built 1883 · 1.25 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $862,500Feb 2018 | $18,1402023 | —Jan 2000 | Owner on Record Owner Occupied | Assessor + 4 DocumentsUpdated Jul 2023 |