Key Biscayne, FL housing market
The typical Key Biscayne home is worth about $1,708,000, up 6.5% in a year, 355% above the Florida typical home. Homes typically sell in 178 days, below asking.
Home values, sales, trends and how Key Biscayne compares with the towns next door — updated as new data is published.
Key Biscayne at a glance
A buyer's market
More homes are for sale than are selling — about 10 months of supply. Buyers have room to negotiate.
Typical home value, 2016–2026
Show as a table
| January | Key Biscayne | Florida |
|---|---|---|
| 2017 | $1,286,000 | $209,000 |
| 2018 | $1,225,000 | $226,000 |
| 2019 | $1,186,000 | $242,000 |
| 2020 | $1,096,000 | $253,000 |
| 2021 | $1,101,000 | $276,000 |
| 2022 | $1,385,000 | $340,000 |
| 2023 | $1,708,000 | $392,000 |
| 2024 | $1,685,000 | $402,000 |
| 2025 | $1,686,000 | $397,000 |
| 2026 | $1,633,000 | $377,000 |
| August 2026 | $1,708,000 | $376,000 |
21 new homes permitted in 2025
Builders were permitted 21 new homes in Key Biscayne in 2025, all single-family houses, worth about $27.2 million to build. That's 1.4 per 1,000 residents, slower than across Florida (8.3). Over the past 10 years, Key Biscayne has permitted 277 homes in all.
Homes vs. people, 2010–2020
Between the 2010 and 2020 censuses, Key Biscayne gained 2,465 residents while 183 new homes were permitted: about 13 new residents per new home. Population grew faster than building, so existing homes filled up: a sign of tight supply. Across Florida: 2.8 new residents per new home.
How Key Biscayne ranks on housing keeping up with growth →
Residents: U.S. Census Bureau, 2010 and 2020 censuses. New homes: permits issued 2010–2019.
Show as a table
| Year | New homes | Single-family | 2+ per building | Value |
|---|---|---|---|---|
| 2026 (Jan–Aug) | 15 | 15 | 0 | $19.3 million |
| 2025 | 21 | 21 | 0 | $27.2 million |
| 2024 | 22 | 22 | 0 | $27.9 million |
| 2023 | 18 | 18 | 0 | $25 million |
| 2022 | 28 | 28 | 0 | $28.1 million |
| 2021 | 31 | 31 | 0 | $31.2 million |
| 2020 | 30 | 30 | 0 | $30.1 million |
| 2019 | 27 | 27 | 0 | $27.2 million |
| 2018 | 26 | 26 | 0 | $26 million |
| 2017 | 27 | 27 | 0 | $27.3 million |
| 2016 | 47 | 47 | 0 | $51.1 million |
| 2015 | 48 | 48 | 0 | $52.2 million |
| 2014 | 1 | 1 | 0 | $134,000 |
| 2013 | 1 | 1 | 0 | $134,000 |
| 2012 | 1 | 1 | 0 | $134,000 |
| 2011 | 2 | 2 | 0 | $268,000 |
| 2010 | 3 | 3 | 0 | $402,000 |
| 2009 | 3 | 3 | 0 | $402,000 |
| 2008 | 7 | 7 | 0 | $937,000 |
| 2007 | 12 | 12 | 0 | $1.6 million |
| 2006 | 16 | 16 | 0 | $2.1 million |
| 2005 | 22 | 20 | 2 | $2.8 million |
| 2004 | 18 | 14 | 4 | $2.2 million |
| 2003 | 20 | 18 | 2 | $2.5 million |
| 2002 | 0 | 0 | 0 | — |
| 2001 | 0 | 0 | 0 | — |
| 2000 | 0 | 0 | 0 | — |
Key Biscayne's permit office didn't report to the Census in 2025, so the 2025 figures are Census estimates.
How Key Biscayne ranks on new homes being built →
Homes authorized by building permits, counted in the year the permit was issued. U.S. Census Bureau, Building Permits Survey, through August 2026.
9.4 years of income
The typical Key Biscayne home costs about 9.4 years of the town's median household income, more than across Florida (5 years).
How Key Biscayne ranks on affordability →
Home value ÷ ACS median household income.
Owners, rent & taxes
U.S. Census Bureau, ACS 2020-2024.
A two-bedroom rents for about $3,450
HUD's Fair Market Rent for a two-bedroom in Key Biscayne is $3,450 a month, utilities included: roughly what a modest, recently rented unit costs. Renters already in Key Biscayne pay a median of $3,501. A two-bedroom takes about 23% of the town's median household income.
Studio $2,590 · 4 bedrooms $5,110
U.S. Department of Housing and Urban Development, FY2026 Fair Market Rents by ZIP code (33149; Miami-Miami Beach-Kendall, FL HUD Metro FMR Area), weighted by land area. A Fair Market Rent is the 40th-percentile rent plus utilities for a standard unit. Median rent: U.S. Census Bureau, American Community Survey.
Home values: Zillow Home Value Index (ZHVI), Zillow Research, August 2026. Sales, days on market and supply: Redfin Data Center, May 2026. Income, ownership, taxes and rent: U.S. Census Bureau, American Community Survey. New homes: U.S. Census Bureau, Building Permits Survey. Fair Market Rents: U.S. Department of Housing and Urban Development. Listings link to their publishers.