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Islip, NY Real Estate & Property Data

Islip Real Estate Market Trends

Last Updated: October 04, 2025

Accurate and comprehensive real estate data is critical for insight into Islip, NY 11751. ATTOM’s Islip real estate data is updated daily, and current market trends show that in Islip, NY a total of 259 residential properties have sold over the past year. With a median home price of $750,000 in Islip and a total of 1 foreclosures. Get detailed property data for Islip, NY instantly. ATTOM is your one-stop-shop for the Islip property reports and real estate data you need in Islip, NY.

Islip Real Estate Market Trends

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Total Residential Properties 4,085

Total Commercial Properties 222

Avg. Home Age (Single Family Home) N/A

Avg. Square Feet (Single Family Home) N/A

Total 2025 Residential Sales (year-to-date) 142

% of Homes Seriously Underwater (Q4 2025) 0.5%

Total 2024 Residential Sales 205

% of Equity Rich Homes (Q4 2025) 48.75%

Effective 2024 Property Tax N/A

Total Foreclosure Filings (year-to-date) 12

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Islip, NY 11751 Real Estate Overview

There were 259 residential properties sold in the past year in Islip, NY 11751. The median home value in Islip, NY 11751 is $679,399. There are a total of 4,085 residential properties in the 11751.

Median Sales Price i

$750,000

(Jul 2025)

+29.3%

year-over-year

y-o-y

July '25 Jul '25 $750,000
June '25 Jun '25 $571,500
May '25 May '25 $652,220
April '25 Apr '25 $670,000
March '25 Mar '25 $650,000
February '25 Feb '25 $662,500
January '25 Jan '25 $620,000
December '24 Dec '24 $572,250
November '24 Nov '24 $607,500
October '24 Oct '24 $650,000
September '24 Sep '24 $625,500
August '24 Aug '24 $575,000

Median Down Payment i

$72,000

(Jul 2025)

+64.6%

year-over-year

y-o-y

July '25 Jul '25 $72,000
June '25 Jun '25 $75,100
May '25 May '25 $141,000
April '25 Apr '25 $82,225
March '25 Mar '25 $87,500
February '25 Feb '25 $32,758
January '25 Jan '25 $132,500
December '24 Dec '24 $86,000
November '24 Nov '24 $92,000
October '24 Oct '24 $129,000
September '24 Sep '24 $120,000
August '24 Aug '24 $52,000

Number of Homes Sold i

30

(Jul 2025)

+42.9%

year-over-year

y-o-y

July '25 Jul '25 30
June '25 Jun '25 23
May '25 May '25 17
April '25 Apr '25 14
March '25 Mar '25 15
February '25 Feb '25 17
January '25 Jan '25 26
December '24 Dec '24 15
November '24 Nov '24 22
October '24 Oct '24 22
September '24 Sep '24 20
August '24 Aug '24 17

Number of Purchase Loans i

7

(Jul 2025)

-22.2%

year-over-year

y-o-y

July '25 Jul '25 7
June '25 Jun '25 5
May '25 May '25 6
April '25 Apr '25 5
March '25 Mar '25 6
February '25 Feb '25 4
January '25 Jan '25 12
December '24 Dec '24 7
November '24 Nov '24 7
October '24 Oct '24 7
September '24 Sep '24 13
August '24 Aug '24 13

Number of REFI Loans i

20

(Jul 2025)

+66.7%

year-over-year

y-o-y

July '25 Jul '25 20
June '25 Jun '25 11
May '25 May '25 18
April '25 Apr '25 6
March '25 Mar '25 10
February '25 Feb '25 10
January '25 Jan '25 11
December '24 Dec '24 9
November '24 Nov '24 10
October '24 Oct '24 14
September '24 Sep '24 14
August '24 Aug '24 9

Number of HELOC Loans i

July '25 Jul '25 N/A
June '25 Jun '25 N/A
May '25 May '25 N/A
April '25 Apr '25 N/A
March '25 Mar '25 4
February '25 Feb '25 2
January '25 Jan '25 6
December '24 Dec '24 2
November '24 Nov '24 3
October '24 Oct '24 4
September '24 Sep '24 2
August '24 Aug '24 3

Islip, NY 11751 Real Estate Market Overview

Last 30 days

Street
Street
Street

1
2
3

Islip, NY 11751 Foreclosure Activity

There were a total of 1 Islip, NY 11751 properties with a foreclosure filing in July 2025.

Total Foreclosure Filings i

1

(Jul 2025)

year-over-year

y-o-y

July '25 Jul '25 1
June '25 Jun '25 3
May '25 May '25 1
April '25 Apr '25 3
March '25 Mar '25 1
February '25 Feb '25 2
January '25 Jan '25 1
December '24 Dec '24 N/A
November '24 Nov '24 2
October '24 Oct '24 N/A
September '24 Sep '24 3
August '24 Aug '24 3

Foreclosure Starts i

1

(Jul 2025)

year-over-year

y-o-y

July '25 Jul '25 1
June '25 Jun '25 3
May '25 May '25 1
April '25 Apr '25 2
March '25 Mar '25 1
February '25 Feb '25 2
January '25 Jan '25 1
December '24 Dec '24 N/A
November '24 Nov '24 2
October '24 Oct '24 N/A
September '24 Sep '24 1
August '24 Aug '24 3

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