Suffolk County, Brookhaven Town and Babylon Town property records for 83 addresses on Riverside Ave, Mastic Beach, NY · Last verified August 2026
| Properties | 83 |
|---|---|
| Median Sale Price | $380,000 |
| Deeds and Mortgages on File | 87 |
| Owner Occupied | 80% |
| Median Annual Tax Bill | $7,536 |
| Median Ownership Tenure | 8 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
1.1 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $7,5632024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
1.01 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $520,000May 2023 | $8,2532024 | Amount on Record Apr 2019 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.25 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,3412024 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
2.46 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $720,000Dec 2025 | $16,0152024 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.5 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $178,190Apr 2013 | $7,8692024 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.25 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $210,000Sep 2015 | $11,5142024 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.25 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $629,000Jul 2024 | $8,0422024 | Amount on Record Dec 2022 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $280,000May 2023 | $7,4862024 | Amount on Record Nov 2017 | 1 Name on Record | Assessor + 5 DocumentsUpdated Aug 2026 |
0.25 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $325,000Aug 2014 | $9,5582024 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.25 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $250,000Aug 2014 | $10,4022024 | Amount on Record Oct 1996 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.25 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $582,000Nov 2024 | $7,7672024 | 1 Name on Record | AssessorUpdated Aug 2026 |
0.5 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $210,000Sep 2017 | $13,1502024 | Amount on Record Jun 2017 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.38 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $650,000Nov 2023 | $10,9702024 | 2 Names on Record | AssessorUpdated Aug 2026 |
0.38 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $7,9452024 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.58 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $150,000Jun 2017 | $6,1432024 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.66 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $437,700Oct 2021 | $10,1712024 | 1 Name on Record | Assessor + 1 DocumentUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $525,000Jul 2025 | $9,9142024 | Amount on Record Mar 1994 | 2 Names on Record | Assessor + 1 DocumentUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $220,000Jan 2017 | $10,3632024 | Amount on Record Aug 2002 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $9,2122024 | 1 Name on Record | Assessor + 1 DocumentUpdated Aug 2026 |
0.319 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $13,000May 2015 | $6,8142024 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.66 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $185,000Nov 1999 | $8,3422024 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.38 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,9612024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $235,000Jun 2012 | $7,1912024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,3762024 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,1632024 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $529,000Jan 2026 | $9,4972024 | Amount on Record Jul 2004 | 2 Names on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,3432024 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.989 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $380,000Jan 2020 | $9,0202024 | Amount on Record Jun 2000 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.074 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $8912024 | 2 Names on Record | AssessorUpdated Aug 2026 |
0.66 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $300,000Aug 2020 | $8,0232024 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $7,0172024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $157,590Jul 2014 | $5,1192024 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $244,000Sep 2021 | $8,0342024 | Amount on Record Jul 2015 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,0772024 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.5 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $7,2332024 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.319 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,6272024 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.5 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $249,000Jun 2023 | $4,8382024 | 1 Name on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
0.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $92,000May 1997 | $8,3442024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.66 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $9,8772024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.66 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $375,000Feb 2023 | $10,2672024 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,2802024 | 2 Names on Record | AssessorUpdated Aug 2026 |
0.5 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $157,000Nov 2001 | $5,2732024 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.46 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $190,000Oct 2019 | $8,4452024 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.439 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $285,000Jul 2009 | $8,4892024 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,5022024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $285,000Jul 2005 | $5,5672024 | Amount on Record Aug 2003 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.66 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,9132024 | 2 Names on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $7,3752024 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $341,000Aug 2023 | $8,0922024 | Amount on Record Nov 2019 | 1 Name on Record | Assessor + 3 DocumentsUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $96,000Dec 1998 | $6,4502024 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.369 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $400,000Mar 2022 | $8,1002024 | Amount on Record Oct 2010 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $232,000Jul 2018 | $4,7192024 | Amount on Record Oct 2012 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.369 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $310,000Mar 2020 | $9,8672024 | Amount on Record Jun 2019 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,8822024 | 1 Name on Record | AssessorUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $330,000Jul 2023 | $6,1472024 | Amount on Record Jul 2015 | 1 Name on Record Owner Occupied | Assessor + 4 DocumentsUpdated Aug 2026 |
0.48 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —May 2011 | $7,3322024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.86 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $9,0712024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.6 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $8,2292024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.66 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $326,000Feb 2022 | $6,9102024 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $465,000May 2026 | $5,8872024 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.66 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,2772024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.55 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $9,5892024 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.83 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Sep 2011 | $9,6732024 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.83 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $435,000Jun 2022 | $8,6372024 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.46 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $350,000Aug 2006 | $7,6902024 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.5 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $160,000Apr 2017 | $5,9132024 | Amount on Record Mar 2010 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $18,500Jun 1999 | $8,0612024 | Amount on Record Feb 1999 | 1 Name on Record | AssessorUpdated Aug 2026 |
0.35 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $241,000Mar 2018 | $7,2942024 | Amount on Record Mar 2009 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $380,000Feb 2025 | $6,1432024 | 2 Names on Record | AssessorUpdated Aug 2026 |
0.5 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $135,000Sep 2000 | $7,9582024 | Amount on Record Nov 1999 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.419 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $328,000May 2022 | $8,8292024 | 1 Name on Record Owner Occupied | Assessor + 5 DocumentsUpdated Aug 2026 |
0.5 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $89,000Apr 2002 | $6,9062024 | Amount on Record Dec 2000 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.66 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $7,5362024 | 2 Names on Record | Assessor + 1 DocumentUpdated Aug 2026 |
0.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,7372024 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.21 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $375,000Aug 2022 | $6,2772024 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.28 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,2942024 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.7 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $145,000Apr 2010 | $8,9052024 | Amount on Record Mar 2010 | 1 Name on Record | AssessorUpdated Aug 2026 |
0.9 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $200,000Dec 2020 | $6,7182024 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
1 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $190,000Jul 2000 | $9,4932024 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.66 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $120,000Aug 2001 | $5,9512024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.489 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,8482024 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.26 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,8072024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.38 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $10,0692024 | 2 Names 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 3rd percentile of exposed land nationally · 4th in New York |
|---|---|
| Wildfire Likelihood | Low — less than 1 in 10,000 per year |
| Exposure | Direct 1 of 7 cells directly exposed · 7 adjoin burnable vegetation |