Suffolk County and Brookhaven Town property records for 67 addresses on Alder Dr, Mastic Beach, NY · Last verified August 2026
| Properties | 67 |
|---|---|
| Median Sale Price | $325,000 |
| Deeds and Mortgages on File | 76 |
| Owner Occupied | 76% |
| Median Annual Tax Bill | $5,980 |
| Median Ownership Tenure | 10 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
0.8 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $225,000May 2021 | $8,9562024 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $144,000Aug 2016 | $5,4982024 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.139 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $59,900Feb 2001 | $2,6872024 | Amount on Record — | 1 Name on Record | Assessor + 1 DocumentUpdated Aug 2026 |
0.179 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,8072024 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.089 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $280,000Jul 2023 | $3,9252024 | Amount on Record Sep 2018 | 1 Name on Record | Assessor + 5 DocumentsUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,8472024 | 2 Names on Record | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,2702024 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.319 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $98,750Nov 2017 | $7,2272024 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.639 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $285,000Aug 2020 | $6,5982024 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.539 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $10,7232024 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.139 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,4962024 | 1 Name on Record | Assessor + 1 DocumentUpdated Aug 2026 |
0.319 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,5312024 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.139 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $45,500Jul 2011 | $6,5502024 | Amount on Record — | 1 Name on Record | AssessorUpdated Aug 2026 |
0.089 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,0752024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.239 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $9,3442024 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $135,000Sep 1993 | $6,9332024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $280,000Jul 2004 | $5,8852024 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $93,500Sep 1999 | $5,1192024 | Amount on Record Dec 1993 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.089 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $290,000Apr 2023 | $5,8912024 | Amount on Record Jul 2018 | 1 Name on Record | Assessor + 6 DocumentsUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $230,000Jul 2007 | $5,2252024 | Amount on Record Jul 2005 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.139 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,7262024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.139 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,3232024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.139 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,0202024 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $87,999Oct 2013 | $5,0202024 | Amount on Record Feb 2004 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $190,000May 2018 | $7,4632024 | Amount on Record Apr 2014 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $95,000Dec 1999 | $5,4982024 | Amount on Record Aug 1999 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.089 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $9432024 | 1 Name on Record | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $10,000Sep 2012 | $7,2662024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $159,400Dec 2016 | $5,6942024 | Amount on Record May 2016 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $120,000Dec 2012 | $5,8712024 | Amount on Record Apr 2005 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.137 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $77,500Mar 2004 | $5,9892024 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.139 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $89,000Sep 2018 | $6,6772024 | Amount on Record Oct 2017 | 1 Name on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,1372024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $305,000Oct 2019 | $8,2492024 | Amount on Record Jan 2019 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,604Apr 2014 | $7,0702024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $150,000Jan 2015 | $6,5932024 | Amount on Record Jul 2013 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $310,000Feb 2006 | $6,0232024 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $335,000Jul 2021 | $8,2492024 | Amount on Record Jan 2017 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $430,000May 2024 | $4,3182024 | Amount on Record Oct 2016 | 1 Name on Record | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $545,000Sep 2025 | $5,9802024 | 2 Names on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
0.139 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $153,700Apr 2004 | $1,8762024 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $380,000Aug 2023 | $6,5592024 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $550,000Aug 2025 | $5,6942024 | 1 Name on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $365,000Oct 2022 | $4,9082024 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,1002024 | 2 Names on Record | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $245,000Oct 2021 | $4,7902024 | Amount on Record Jul 2003 | 1 Name on Record | Assessor + 1 DocumentUpdated Aug 2026 |
0.139 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $255,000Jun 2022 | Amount on Record Nov 2002 | 2 Names on Record Owner Occupied | AssessorUpdated Jun 2023 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,9422024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $151,000Mar 2003 | $8,0522024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $142,000Mar 2020 | $6,8342024 | Amount on Record Nov 2018 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $78,000Mar 2017 | $3,9252024 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.089 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $200,000Oct 2012 | $7,6592024 | Amount on Record Nov 2009 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $246,900Sep 2004 | $7,4632024 | Amount on Record Nov 2000 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.089 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $121,000Apr 2018 | $6,7082024 | Amount on Record Dec 2017 | 1 Name on Record | Assessor + 3 DocumentsUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $119,900Jun 2002 | $5,4142024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $60,000Mar 2013 | $5,9112024 | Amount on Record Oct 2003 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.139 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,6472024 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $250,000Jun 2018 | $7,2662024 | Amount on Record Jan 2018 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.11 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,9432024 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.11 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jul 1997 | $3,8412024 | Amount on Record Mar 1996 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.319 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $219,000Oct 2006 | $4,9422024 | Amount on Record Oct 2003 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.46 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jun 1998 | $7,4632024 | 1 Name on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
0.489 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $7,7382024 | 2 Names on Record | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $369,500Jan 2022 | $6,9722024 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $325,000Mar 2022 | $7,4632024 | Amount on Record Jul 2016 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Nov 2022 | $6,9522024 | Amount on Record Aug 2018 | 2 Names on Record Owner Occupied | Assessor + 6 DocumentsUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $50,000Apr 2003 | $6,8682024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020
| Wildfire Risk | Low this street's cells rank at the 1st percentile of exposed land nationally · 1st in New York |
|---|---|
| Wildfire Likelihood | Low — less than 1 in 10,000 per year |
| Exposure | Direct 1 of 6 cells directly exposed · 4 adjoin burnable vegetation |