Key Biscayne, FL (33149) housing scorecard.
Home value, rent, cap rate, 5-year growth, price versus incomes and our 0 to 100 Momentum Market Score for ZIP 33149, free, from Zillow, Realtor.com and Census data.
The typical home costs about 9.56 times the local median income, about 92.4% richer than the Florida norm, so value is stretched here. Gross rent yield is around 5.94%. Values are up roughly 8.0% a year over the last five years. Owning the typical home at today's rate takes about 57.9% of a median income, the affordability squeeze in one number. About 11.3% of listings have cut their price.
Typical home value, last 13 months
What drives the score
Each bar ranks this ZIP against every other Florida ZIP (0 = lowest, 100 = highest) on that input, then weighted into the score. Full methodology.
Common questions
Is Key Biscayne, FL (33149) a buyer's or seller's market?
By the Momentum Market Score, Key Biscayne, FL (33149) reads frothy (9 out of 100), meaning it is expensive against incomes and tight for buyers. The score blends value versus incomes, price cuts, inventory growth, affordability and rent yield.
What is the typical home value in Key Biscayne?
About $1,644,553 (Zillow Home Value Index, 2026-06-09), up roughly 8.0% a year over five years.
Where does this data come from?
Zillow Research (home value, rent), Realtor.com (days on market, listings), U.S. Census (income, population), Freddie Mac via FRED (rate). Score and derived metrics by Momentum Realty, methodology here.
Data: Zillow Research, Realtor.com, U.S. Census Bureau ACS, and Freddie Mac 30-Year Fixed Rate Mortgage Average [MORTGAGE30US] via FRED. Score by Momentum Realty.
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