Nassau County, NY Real Estate & Property Data
Last Updated: September 20, 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 $850,000. Nassau County real estate data shows that there have been a total of 10,294 residential properties sold over the past 12 months. ATTOM’s Nassau County real estate data indicates that the county has 161 properties in foreclosure and 4 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)
5,388
% 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)
1,100
Nassau County, NY Real Estate Overview
There were 10,294 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
$850,000
(Jul 2025)
+6.2%
year-over-year
y-o-y
- July '25 Jul '25 $850,000
- 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
Median Down Payment
i
$213,500
(Jul 2025)
+6.8%
year-over-year
y-o-y
- July '25 Jul '25 $213,500
- June '25 Jun '25 $220,000
- May '25 May '25 $191,700
- April '25 Apr '25 $206,102
- March '25 Mar '25 $186,000
- 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
Number of Homes Sold
i
1,030
(Jul 2025)
+16.9%
year-over-year
y-o-y
- July '25 Jul '25 1,030
- June '25 Jun '25 782
- May '25 May '25 703
- April '25 Apr '25 641
- March '25 Mar '25 703
- 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
Number of Purchase Loans
i
889
(Jul 2025)
+4.7%
year-over-year
y-o-y
- July '25 Jul '25 889
- June '25 Jun '25 730
- May '25 May '25 614
- April '25 Apr '25 563
- March '25 Mar '25 688
- February '25 Feb '25 613
- 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
Number of REFI Loans
i
483
(Jul 2025)
+17.5%
year-over-year
y-o-y
- July '25 Jul '25 483
- June '25 Jun '25 532
- May '25 May '25 433
- April '25 Apr '25 494
- March '25 Mar '25 505
- 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
Number of HELOC Loans
i
568
(Jul 2025)
+17.4%
year-over-year
y-o-y
- July '25 Jul '25 568
- June '25 Jun '25 580
- May '25 May '25 494
- April '25 Apr '25 478
- March '25 Mar '25 534
- 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
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
-
$855,237 $527.47/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
-
$854,621 $451.32/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 161 Nassau County, NY properties with a foreclosure filing in July 2025. Lenders started the foreclosure process on 102 Nassau County, NY properties and repossessed 4 Nassau County, NY properties through completed foreclosures (REOs) in July 2025.
Total Foreclosure Filings
i
161
(Jul 2025)
year-over-year
y-o-y
- July '25 Jul '25 161
- 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
Foreclosure Starts
i
102
(Jul 2025)
+4.1%
year-over-year
y-o-y
- July '25 Jul '25 102
- 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
Completed Foreclosures (REOs)
i
4
(Jul 2025)
+33.3%
year-over-year
y-o-y
Interested in growing your business with Nassau County, NY property data?
Contact Us Now!
Call (800) 692-2596 — or fill out this form and we’ll be in touch shortly.