Key Biscayne, FL—33149
Real Estate Data & Market Trends
Key Metrics at a Glance
Home Price Trends — Key Biscayne, FL
As of Oct '25, the median home price in Key Biscayne, FL is $1,604,000, with a year-over-year change of -5.9%. This indicates that home prices in Key Biscayne, FL are decreasing. According to Zillow, the 1-year price projection is 2.5%, suggesting an increase housing market in the next year.
Cost per Home Type
| Home Type | Median Home Value | YoY % Change |
|---|---|---|
All Homes | $1,604,000 | -5.9% |
| Single Family | $3,696,000 | -3.5% |
| Condos | $1,282,000 | -6.6% |
Cost per Home Size
| Home Size | Median Home Value | YoY % Change |
|---|---|---|
1 Bed | $556,000 | -5.6% |
2 Bed | $1,146,000 | -6.9% |
3 Bed | $2,547,000 | -3.9% |
4 Bed | $3,448,000 | -4.0% |
| 5 Bed | $5,154,000 | -3.0% |
% of Housing Stock
Rental Trends — Key Biscayne, FL
As of July '25, Rentcast reports the average rent in Key Biscayne, FL is $6,170, with a year-over-year rent change of -4.0%. Per bedroom, the median rent as of July '25 in Key Biscayne, FL is studios: $3,500, 1-bedrooms: $3,900, 2-bedrooms: $6,280, 3-bedrooms: $8,070, 4-bedrooms: $7,500. The most common rental property sizes in Key Biscayne, FL are 2-bedroom and 3-bedroom, accounting for 40.0% and 29.7% of the rental stock.
| Type | Median Rent | Average Rent |
|---|---|---|
| Average Rent | $6,400 | $6,170 |
| Studio Rent | $3,500 | $3,500 |
| 1 Bed Rent | $3,500 | $3,900 |
| 2 Bed Rent | $6,500 | $6,280 |
| 3 Bed Rent | $8,000 | $8,070 |
| 4 Bed Rent | $7,500 | $7,500 |
% of Rental Stock
Property Listings — Key Biscayne, FL
As of Oct '25, Realtor.com reports that the median days on market for a home in Key Biscayne, FL is 99. This is a increase of 23.0% from last year, suggesting that homes are sitting on the market longer than last year. The percentage of listed homes with a reduced price is 12.0%, representing a small inventory and little supply pressure on home prices.
| Metric | Zip Code Average | Year over Year % Change |
|---|---|---|
Median Listing Price | $1,920,000 | 0.0% |
Listing Count | 189 | 8.0% |
| Listings as % of Homes | 2.5% | 8.0% |
Days on Market | 99 | 23.0% |
Demographics — Key Biscayne, FL
As of the latest ACS Survey released in 2023, Key Biscayne, FL has a population of 14,600, which has increased by 12.1% over the past 5 years. Key Biscayne, FL is a popular place for families, as children make up 30.6% of the population. The area has a highly educated workforce, with 74.1% of adult residents holding a bachelor’s degree or higher. There are many residents working remotely, with 31.7% reporting working from home.
| Metric | Latest Census | YoY % Change |
|---|---|---|
Population | 14,600 | 12.1% |
% Under 18 | 30.6% | 10.5% |
% Seniors | 16.6% | -1.2% |
% WFH | 31.7% | 237.2% |
% w/ College Degree | 74.1% | 0.8% |
As of the latest ACS Survey released in 2023, Key Biscayne, FL is a predominantly hispanic area, with 72.8% of the population identifying as hispanic. The hispanic population has grown by 5.4% in the last 5 years. The second most common race or ethnicity in Key Biscayne, FL is white, making up 23.2% of the population. Foreign-born residents account for 58.6% of the population in Key Biscayne, FL, and this percentage has increased by 14.5% as of the ACS Survey 5 years prior, suggesting more immigrants are calling the area home.
Race and Ethnicity
| Metric | Latest Census | 5-Year % Change |
|---|---|---|
% White | 23.2% | -22.7% |
% Black | 1.0% | ∞% |
% Hispanic | 72.8% | 5.4% |
% Asian | 0.2% | -77.8% |
% Foreign Born | 58.6% | 14.5% |
Mortgage and Risk — Key Biscayne, FL
According to HUD data as of 2023, there were 132 mortgage originations in Key Biscayne, FL, of which 99.0% of loans were conventional mortgages. The average loan-to-value was 50.0%, with 1.0% above 90% LTV (normal). This implies small mortgage risk in Key Biscayne, FL. Investor activity is low, as 3.0% of loans were by investors. 11.0% of loans were cash-out refinances, suggesting many homeowners are tapping equity.
Mortgages
| Metric | Zip Code Average |
|---|---|
Total Loan Originations | 132 |
% Conventional Loans | 99.0% |
% Government Loans | 1.0% |
% Investor Loans | 3.0% |
% Second Loans | 14.0% |
% Cash Out Refinance | 11.0% |
Loan Activity
Rentals and Section 8 — Key Biscayne, FL
Key Biscayne, FL lacks sufficient Section 8 program data for analysis.
Section 8 Market Size
Total Units under HUD | N/A |
Total Units Section 8 | N/A |
% Rentals under Section 8 | N/A |
% Occupied Section 8 | N/A |
Section 8 Opportunity
| Home Size | HUD Premium | Market Rent | Max HUD Rent |
|---|---|---|---|
| 1 Bedroom | -$660 | $3,500 | $2,840 |
| 2 Bedroom | -$3,010 | $6,500 | $3,490 |
| 3 Bedroom | -$3,490 | $8,000 | $4,510 |
| 4 Bedroom | -$2,220 | $7,500 | $5,280 |
Affordability — Key Biscayne, FL
Home Price to Income Ratio
| Metric | Zip Code Average |
|---|---|
| Home Price to Income Ratio | 9.9 |
| Median Home Price | $1,604,000 |
| Median Household Income | $172,000 |