Nassau County, NY Real Estate & Property Data
Last Updated: September 06, 2025
With up-to-date real estate data get detailed insight into Nassau County, NY sourced from the nation’s leading property data provider. The current median home price in Nassau County, NY is $825,000. Nassau County real estate data shows that there have been a total of 9,915 residential properties sold over the past 12 months. ATTOM’s Nassau County real estate data indicates that the county has 143 properties in foreclosure and 6 REOs (real estate bank owned) properties.
Total Residential Properties
378,067
Total Commercial Properties
16,794
Avg. Home Age
(Single Family Home)
73 Years
Avg. Square Feet
(Single Family Home)
1,894
Total 2025 Residential Sales
(year-to-date)
4,348
% of Homes Seriously Underwater
(Q3 2025)
0.24%
Total 2024 Residential Sales
8,969
% of Equity Rich Homes
(Q3 2025)
49.04%
Effective 2024 Property Tax
1.31%
Total Foreclosure Filings
(year-to-date)
939
Nassau County, NY Real Estate Overview
There were 9,915 residential properties sold in the past year in Nassau County, NY. The median home value in Nassau County, NY is $854,621. There are a total of 378,067 residential properties in the Nassau.
Median Sales Price
i
$825,000
(Jun 2025)
+6.6%
year-over-year
y-o-y
- June '25 Jun '25 $825,000
- May '25 May '25 $800,000
- April '25 Apr '25 $829,000
- March '25 Mar '25 $800,000
- February '25 Feb '25 $800,000
- January '25 Jan '25 $789,650
- December '24 Dec '24 $800,000
- November '24 Nov '24 $785,000
- October '24 Oct '24 $775,000
- September '24 Sep '24 $817,000
- August '24 Aug '24 $795,000
- July '24 Jul '24 $800,000
Median Down Payment
i
$220,000
(Jun 2025)
+22.2%
year-over-year
y-o-y
- June '25 Jun '25 $220,000
- May '25 May '25 $191,700
- April '25 Apr '25 $206,102
- March '25 Mar '25 $185,000
- February '25 Feb '25 $199,875
- January '25 Jan '25 $210,000
- December '24 Dec '24 $212,500
- November '24 Nov '24 $185,000
- October '24 Oct '24 $185,800
- September '24 Sep '24 $210,000
- August '24 Aug '24 $198,000
- July '24 Jul '24 $200,000
Number of Homes Sold
i
784
(Jun 2025)
+18.6%
year-over-year
y-o-y
- June '25 Jun '25 784
- May '25 May '25 703
- April '25 Apr '25 641
- March '25 Mar '25 691
- February '25 Feb '25 668
- January '25 Jan '25 861
- December '24 Dec '24 787
- November '24 Nov '24 646
- October '24 Oct '24 933
- September '24 Sep '24 819
- August '24 Aug '24 840
- July '24 Jul '24 881
Number of Purchase Loans
i
727
(Jun 2025)
+23.6%
year-over-year
y-o-y
- June '25 Jun '25 727
- May '25 May '25 614
- April '25 Apr '25 563
- March '25 Mar '25 677
- February '25 Feb '25 612
- January '25 Jan '25 813
- December '24 Dec '24 772
- November '24 Nov '24 640
- October '24 Oct '24 834
- September '24 Sep '24 702
- August '24 Aug '24 802
- July '24 Jul '24 849
Number of REFI Loans
i
532
(Jun 2025)
+73.3%
year-over-year
y-o-y
- June '25 Jun '25 532
- May '25 May '25 433
- April '25 Apr '25 494
- March '25 Mar '25 507
- February '25 Feb '25 398
- January '25 Jan '25 533
- December '24 Dec '24 445
- November '24 Nov '24 372
- October '24 Oct '24 469
- September '24 Sep '24 384
- August '24 Aug '24 325
- July '24 Jul '24 411
Number of HELOC Loans
i
580
(Jun 2025)
+39.1%
year-over-year
y-o-y
- June '25 Jun '25 580
- May '25 May '25 494
- April '25 Apr '25 478
- March '25 Mar '25 531
- February '25 Feb '25 337
- January '25 Jan '25 441
- December '24 Dec '24 347
- November '24 Nov '24 394
- October '24 Oct '24 508
- September '24 Sep '24 419
- August '24 Aug '24 343
- July '24 Jul '24 484
Nassau County, NY Real Estate Market Overview
Last 30 days-
CityMedian Est. Value
-
CityMedian Est. Value
-
CityMedian Est. Value
-
$1,094,975 $550.39/sqft
-
$1,461,871 $581.57/sqft
-
$737,438 $438.04/sqft
-
$815,830 $427.97/sqft
-
$827,695 $460.17/sqft
-
$786,072 $491.96/sqft
-
$892,634 $548.24/sqft
-
$1,304,270 $549.72/sqft
-
$836,394 $510.25/sqft
-
$926,345 $444.33/sqft
-
$750,328 $424.78/sqft
-
$744,279 $522.61/sqft
-
$854,621 $451.32/sqft
-
$813,516 $522.46/sqft
-
$685,939 $407.5/sqft
-
$1,345,036 $602.19/sqft
-
$830,084 $416.3/sqft
-
$1,512,440 $519.17/sqft
-
$899,973 $512.37/sqft
-
$1,701,065 $620.34/sqft
-
$1,193,225 $510.38/sqft
-
$682,337 $444.79/sqft
-
$1,059,443 $405.55/sqft
-
$774,397 $504.55/sqft
-
$864,348 $536.85/sqft
-
$733,310 $394.96/sqft
-
$1,293,704 $558.53/sqft
-
$2,514,420 $746.86/sqft
-
$730,726 $462.65/sqft
-
$1,210,117 $472.45/sqft
-
$896,898 $481.07/sqft
-
$801,078 $478.1/sqft
-
$826,821 $487.93/sqft
-
$2,237,581 $767.7/sqft
-
$815,351 $451.61/sqft
-
$799,225 $468.6/sqft
-
$895,201 $461.1/sqft
-
$2,199,775 $617.51/sqft
-
$839,237 $539.83/sqft
-
$979,500 $579.47/sqft
-
$806,529 $442.13/sqft
-
$1,026,726 $551.14/sqft
-
$2,957,724 $680.91/sqft
-
$1,415,246 $509/sqft
-
$961,328 $521.3/sqft
-
$1,489,658 $817.38/sqft
-
$1,345,044 $588.02/sqft
-
$1,021,693 $472.83/sqft
-
$685,052 $465.06/sqft
-
$1,695,843 $549.88/sqft
-
$1,432,258 $571.11/sqft
-
$1,138,101 $592.98/sqft
-
$805,036 $472.16/sqft
-
$1,203,902 $505.53/sqft
-
$682,326 $490.14/sqft
-
$783,426 $479.96/sqft
-
$808,425 $466.12/sqft
-
$808,992 $469.3/sqft
-
$812,182 $468.3/sqft
-
$991,815 $550.06/sqft
-
$1,534,198 $467.58/sqft
-
$1,390,104 $494.26/sqft
Nassau County, NY Foreclosure Activity
There were a total of 143 Nassau County, NY properties with a foreclosure filing in June 2025. Lenders started the foreclosure process on 82 Nassau County, NY properties and repossessed 6 Nassau County, NY properties through completed foreclosures (REOs) in June 2025.
Total Foreclosure Filings
i
143
(Jun 2025)
-23.9%
year-over-year
y-o-y
- June '25 Jun '25 143
- May '25 May '25 187
- April '25 Apr '25 167
- March '25 Mar '25 172
- February '25 Feb '25 117
- January '25 Jan '25 153
- December '24 Dec '24 122
- November '24 Nov '24 147
- October '24 Oct '24 148
- September '24 Sep '24 157
- August '24 Aug '24 187
- July '24 Jul '24 161
Foreclosure Starts
i
82
(Jun 2025)
-32.8%
year-over-year
y-o-y
- June '25 Jun '25 82
- May '25 May '25 112
- April '25 Apr '25 107
- March '25 Mar '25 111
- February '25 Feb '25 91
- January '25 Jan '25 106
- December '24 Dec '24 80
- November '24 Nov '24 115
- October '24 Oct '24 106
- September '24 Sep '24 105
- August '24 Aug '24 115
- July '24 Jul '24 98
Completed Foreclosures (REOs)
i
6
(Jun 2025)
+50%
year-over-year
y-o-y
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