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Key Biscayne, FL Real Estate & Property Data

Key Biscayne Real Estate Market Trends

Last Updated: September 13, 2025

To gain insights into Key Biscayne, FL 33149, FL’s real estate market, it is crucial to have accurate and comprehensive real estate data. ATTOM updates Key Biscayne real estate data on a daily basis, providing you with the most current information. As per the latest market trends, 321 residential properties have been sold in Key Biscayne, FL over the past year, with a median home price of $4,750,000. Additionally, 36.1% of homes in Key Biscayne are equity rich, while 0.29% of homes are seriously underwater. To obtain detailed information on properties in Key Biscayne, Florida, you can rely on ATTOM, your go-to source for Key Biscayne property reports and real estate data.

Key Biscayne Real Estate Market Trends

Get property data for any address in Key Biscayne, FL or the country:

Total Residential Properties 7,045

Total Commercial Properties 156

Avg. Home Age (Single Family Home) 45 Years

Avg. Square Feet (Single Family Home) 3,234

Total 2025 Residential Sales (year-to-date) 146

% of Homes Seriously Underwater (Q3 2025) 0.29%

Total 2024 Residential Sales 304

% of Equity Rich Homes (Q3 2025) 36.1%

Effective 2024 Property Tax 0.98%

Total Foreclosure Filings (year-to-date) 9

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Key Biscayne, FL 33149 Real Estate Overview

There were 321 residential properties sold in the past year in Key Biscayne, FL 33149. The median home value in Key Biscayne, FL 33149 is $1,408,388. There are a total of 7,045 residential properties in the 33149.

Median Sales Price i

$4,750,000

(Jun 2025)

+23.4%

year-over-year

y-o-y

June '25 Jun '25 $4,750,000
May '25 May '25 N/A
April '25 Apr '25 $3,310,000
March '25 Mar '25 $4,000,000
February '25 Feb '25 N/A
January '25 Jan '25 $2,982,800
December '24 Dec '24 $4,350,000
November '24 Nov '24 $4,700,000
October '24 Oct '24 $2,875,000
September '24 Sep '24 $3,643,500
August '24 Aug '24 N/A
July '24 Jul '24 $3,100,000

Median Down Payment i

$1,187,500

(Jun 2025)

-13.3%

year-over-year

y-o-y

June '25 Jun '25 $1,187,500
May '25 May '25 $5,080,000
April '25 Apr '25 $662,000
March '25 Mar '25 $1,000,000
February '25 Feb '25 $4,000,000
January '25 Jan '25 $950,000
December '24 Dec '24 $1,740,000
November '24 Nov '24 $1,250,000
October '24 Oct '24 $1,550,000
September '24 Sep '24 $1,275,225
August '24 Aug '24 N/A
July '24 Jul '24 $2,620,000

Number of Homes Sold i

31

(Jun 2025)

+24%

year-over-year

y-o-y

June '25 Jun '25 31
May '25 May '25 20
April '25 Apr '25 30
March '25 Mar '25 23
February '25 Feb '25 14
January '25 Jan '25 28
December '24 Dec '24 23
November '24 Nov '24 26
October '24 Oct '24 20
September '24 Sep '24 17
August '24 Aug '24 29
July '24 Jul '24 35

Number of Purchase Loans i

10

(Jun 2025)

-23.1%

year-over-year

y-o-y

June '25 Jun '25 10
May '25 May '25 7
April '25 Apr '25 9
March '25 Mar '25 7
February '25 Feb '25 4
January '25 Jan '25 11
December '24 Dec '24 8
November '24 Nov '24 9
October '24 Oct '24 10
September '24 Sep '24 4
August '24 Aug '24 11
July '24 Jul '24 12

Number of REFI Loans i

6

(Jun 2025)

+200%

year-over-year

y-o-y

June '25 Jun '25 6
May '25 May '25 7
April '25 Apr '25 5
March '25 Mar '25 2
February '25 Feb '25 4
January '25 Jan '25 2
December '24 Dec '24 4
November '24 Nov '24 6
October '24 Oct '24 6
September '24 Sep '24 4
August '24 Aug '24 6
July '24 Jul '24 2

Number of HELOC Loans i

3

(Jun 2025)

year-over-year

y-o-y

June '25 Jun '25 3
May '25 May '25 1
April '25 Apr '25 4
March '25 Mar '25 4
February '25 Feb '25 2
January '25 Jan '25 4
December '24 Dec '24 N/A
November '24 Nov '24 4
October '24 Oct '24 1
September '24 Sep '24 2
August '24 Aug '24 10
July '24 Jul '24 1

Key Biscayne, FL 33149 Real Estate Market Overview

Last 30 days

Street
Street
Street

1
2

Key Biscayne, FL 33149 Foreclosure Activity

Total Foreclosure Filings i

June '25 Jun '25 N/A
May '25 May '25 2
April '25 Apr '25 2
March '25 Mar '25 2
February '25 Feb '25 1
January '25 Jan '25 2
December '24 Dec '24 2
November '24 Nov '24 2
October '24 Oct '24 1
September '24 Sep '24 N/A
August '24 Aug '24 4
July '24 Jul '24 3

Foreclosure Starts i

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

Completed Foreclosures (REOs) i

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

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