Commercial Real Estate Market in Key Biscayne, FL
Updated monthly: sale, lease, property records, location trend, and more… · Last update: September 30
13 active listings and 153 off-market properties in Key Biscayne, FL. Commercial property asks $436/SF to buy and $102.80/SF/Yr to lease.
Market Trends
Key Biscayne, FL spans 4.7 square miles in Miami-Dade County, Florida. Figures below refresh monthly; last updated 30 September 2026.
Office
Office vacancy in Key Biscayne, FL runs 20.2% across the South region in 2025, up from 14.4% in 2019.
Vacancy Rate % in South region
Retail
Retail vacancy in Key Biscayne, FL runs 5.4% across the South region in 2025, down from 7% in 2020.
Vacancy Rate % in South region
Industrial
Industrial vacancy in Key Biscayne, FL runs 7.9% across the South region in 2025, up from 6% in 2019. Nearly 2.3x the 2022 low of 3.5%.
Vacancy Rate % in South region
Multifamily
Multifamily space in Key Biscayne, FL asks $429/SF to buy. Vacancy runs 11.3% across the South region in 2025, up from 8.5% in 2022.
Average Sale Price $/SF
Listings
Vacancy Rate % in South region
Market overview
Demographics & Economy
Key Biscayne, FL has 14,847 residents in 7,514 households. Density runs 3,153 people per square mile. Median household income here is $171,982 and median gross rent $3,501 a month.
14,847
Population
7,514
Households
2
Avg Household Size
43
Median Age
74%
College-Educated
96%
High-School Grad
4.7 sq mi
ZIP Area
3,153
Density / Sq Mi
$171,982
Median Household Income
$76,530
Median Earnings
$3,501
Median Rent
$1,231,500
Median Home Value
Tools
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| Miami Beach | $436 (county avg) | $50.08 |
| Coral Gables | $436 (county avg) | $36.84 |
| Pinecrest | $436 (county avg) | — |
| Doral | $436 (county avg) | $31.04 |
Commercial property in Key Biscayne, FL asks $436/SF. The 4 bordering markets run from $436/SF in Miami Beach to $436/SF in Miami Beach, and the city sits in line with their $436/SF median.
Frequently Asked Questions
What is the average price per square foot for commercial property in Key Biscayne?
Commercial property in Key Biscayne, FL asks an average of $436 per square foot. The 7 most recent recorded sales traded at a median of $1,317/SF. Multifamily carries the highest asking price at $429/SF.
How much does it cost to lease commercial space in Key Biscayne?
Asking lease rates in Key Biscayne, FL average $102.80 per square foot per year.
How does Key Biscayne compare to nearby markets on price?
Key Biscayne, FL asks $436/SF against $436/SF in Miami Beach, $436/SF in Coral Gables, $436/SF in Pinecrest and $436/SF in Doral.
Where does Realmo's Key Biscayne market data come from?
Realmo compiles Key Biscayne, FL figures from 7 recent recorded sales, 6 active sale listings, 7 active lease listings, 153 tracked off-market properties. Sale and lease figures refresh monthly; vacancy annually. Last updated 30 September 2026.
Methodology & data sources
- Asking prices and averages
- Computed from 6 active for-sale and 7 active for-lease listings in Key Biscayne, FL. These are ASKING figures from live listings, not closed-transaction prices, and a segment carried by a handful of listings reads as indicative rather than an average.
- Price per square foot
- The county-level $/SF blends closed sales aggregated over the trailing months of available data, not a single day's snapshot — it can differ from any one month's own median.
- Vacancy rates
- Published per-sector market series, taken at the metro level where one exists and otherwise at the Census-region level — a chart reading "in <region> region" is a regional number, not this city's.
- Refresh
- The monthly aggregates close at the end of the previous month, so 30 September 2026 — not today — is the honest last update.
- Known limitations
- office vacancy is reported at South region level, retail vacancy is reported at South region level and industrial vacancy is reported at South region level.
- Coverage
- Metrics below the 10-observation threshold fall back one geographic level. The geography used is named on each figure.
Compiled by the Realmo Data team · reviewed 30 September 2026 · How Realmo checks market page data · Report a data issue
