Suffolk County and Brookhaven Town property records for 13 addresses on Old Post Rd, Mount Sinai, NY · Last verified August 2026
| Properties | 13 |
|---|---|
| Median Sale Price | $484,700 |
| Deeds and Mortgages on File | 16 |
| Median Price per Sqft | $206 |
| Owner Occupied | 69% |
| Median Annual Tax Bill | $14,974 |
| Median Year Built | 1952 |
| Median Ownership Tenure | 11 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
4 bd · 1 ba · 2,401 sqft · built 1845 · 0.25 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $642,000Jan 2025 | $8,3692024 | Amount on Record Apr 2004 | 2 Owners on Record | AssessorUpdated Aug 2026 |
4 bd · 2 ba · 3,731 sqft · built 1820 · 0.919 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $507,500Jul 2018 | $16,6302024 | Amount on Record Jan 2003 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
2 bd · 2 ba · 2,952 sqft · built 1860 · 1.13 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $135,000May 1996 | $18,5452024 | 2 Owners on Record | AssessorUpdated Aug 2026 |
1.93 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $365,000Mar 2001 | $25,7232024 | Amount on Record Oct 1996 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
3 bd · 2 ba · 2,300 sqft · built 2008 · 1 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $332,000Mar 2011 | $15,3082024 | Amount on Record Oct 2010 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
4 bd · 2 ba · 2,108 sqft · built 1972 · 1 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $630,000Oct 2020 | $14,9742024 | Amount on Record Aug 2017 | 2 Owners on Record | Assessor + 3 DocumentsUpdated Aug 2026 |
3 bd · 2 ba · 2,640 sqft · built 1976 · 0.86 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $16,5062024 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
3 bd · 1 ba · 1,640 sqft · built 1921 · 0.66 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,800,000Jan 2006 | $14,3552024 | Amount on Record Feb 2003 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
3 bd · 2 ba · 1,474 sqft · built 1952 · 0.4 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $388,000Mar 2011 | $12,0562024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
3 bd · 2 ba · 1,818 sqft · built 1920 · 0.919 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $265,000Jul 1998 | $6,6472024 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
3 bd · 2 ba · 1,694 sqft · built 1962 · 0.469 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $350,000May 2015 | $12,9982024 | Amount on Record Mar 2014 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.469 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $484,700Sep 2023 | $12,5542024 | Amount on Record Mar 2023 | Owner on Record | Assessor + 3 DocumentsUpdated Aug 2026 |
3 bd · 1 ba · 2,260 sqft · built 1973 · 1.25 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $400,000Jan 2022 | $31,1212024 | Amount on Record Aug 2019 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |