Mill St, Mount Sinai, NY Property Records

Suffolk County and Brookhaven Town property records for 4 addresses on Mill St, Mount Sinai, NY · Last verified August 2026

Mill St Highlights

Properties 4
Median Sale Price $501,000
Deeds and Mortgages on File 3
Median Price per Sqft $224
Owner Occupied 75%
Median Annual Tax Bill $13,158
Median Year Built 1986
Median Ownership Tenure 5 years

Properties on Mill St

Owner names and prior sale amounts shown locked below are available instantly with a free trial.

3 Mill St

3 bd · 2 ba · 1,796 sqft · built 1978 · 0.369 acres

Last Sale Tax Bill Prior Sale Owner Records
$10,5612024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

11 Mill St

3 bd · 2 ba · 1,796 sqft · built 1976 · 0.339 acres

Last Sale Tax Bill Prior Sale Owner Records
$533,000Feb 2024 $10,1992024 2 Owners on Record Assessor + 1 DocumentUpdated Aug 2026

12 Mill St

5 bd · 2 ba · 2,846 sqft · built 1986 · 0.35 acres

Last Sale Tax Bill Prior Sale Owner Records
$375,000Mar 2016 $13,1582024 Amount on Record Jul 2003 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

21 Mill St

4 bd · 2 ba · 2,232 sqft · built 1986 · 0.339 acres

Last Sale Tax Bill Prior Sale Owner Records
$501,000Jan 2021 $13,8712024 Amount on Record Aug 2016 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

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