What is the median home price in Key Biscayne?

Over the last 90 days the median sold price in Key Biscayne was $4,950,000 for single-family homes and $1,380,000 for condos and townhomes, from BeachesMLS closings as of September 23, 2026. Homes for sale now are asking a median $7,540,000 and $1,582,500 respectively. These figures refresh daily on this page.

Is Key Biscayne a buyer's market or a seller's market?

By months of inventory, the single-family side of Key Biscayne is a buyer's market right now: 9.5 months of supply, with condos and townhomes at 6 months (balanced market). Under four months of supply favours sellers, over six favours buyers, and the two segments often sit on different sides of that line in South Florida.

How long does it take to sell a home in Key Biscayne?

Single-family homes that closed in Key Biscayne in the last 90 days had been on the market 178 days on average, and condos and townhomes 79 days. Sellers achieved 90.8% of their asking price on the typical single-family sale and 95.5% on the typical condo sale. Well-priced homes go under contract in the first few weeks; the average is pulled up by listings that started too high.

Are home prices in Key Biscayne going up or down?

Over the last twelve months the whole-market median sold price in Key Biscayne moved from $2,325,000 (Oct 2025) to $1,550,000 (Aug 2026), -33.3%. Comparing the last 90 days with the same 90 days a year earlier, single-family medians are +29% and condo medians +6.6%. Monthly medians swing with the mix of homes that happened to close, so the direction over several months matters more than any one month.

What is the median rent in Key Biscayne?

The median asking rent in Key Biscayne is $9,000 a month across 173 active rentals: $19,450 for houses and townhomes and $8,000 for condos and apartments. The Key Biscayne rentals hub carries the full rental market table, updated daily.

Where do these numbers come from?

Every figure is computed from BeachesMLS through the Spark API: active listings are counted as of the refresh date (September 23, 2026), sold figures cover closings in the last 90 days compared with the same 90 days a year earlier, and the monthly table buckets closed sales by closing date. Statistics refresh once a day and are cached; inventory over time comes from our own daily snapshots. Nothing on this page is typed by hand, and none of it is an appraisal. BreakThru Realty's market data methodology page explains every calculation, and broker of record Tyson E. Sam reviews the method and the written guidance in this report.

BreakThru Realty Key Biscayne Housing Market Report

Name: BreakThru Realty Key Biscayne Housing Market Report
Creator: BreakThru Realty

BreakThru Realty analyzes BeachesMLS data daily to track home prices, inventory, sales, days on market and market direction in Key Biscayne, Florida. These figures were updated September 23, 2026. Nothing here is typed by hand.

Key Biscayne Housing Market: Key Figures

The median single-family home in Key Biscayne sold for $4,950,000 over the last 90 days, +29% against the same period a year earlier.
The median condo or townhome sold for $1,380,000, +6.6% year over year.
Single-family homes that sold averaged 178 days on the market; condos and townhomes 79 days.
With 9.5 months of inventory, single-family homes are a buyer's market; condos and townhomes, at 6 months, are a balanced market.
152 homes and condos were for sale in Key Biscayne on September 23, 2026.

Key Biscayne Market at a Glance

Updated September 23, 2026 from BeachesMLS.

152homes & condos for sale
10new listings this week
22under contract
77waterfront listings
41luxury listings ($5,000,000+)
10sold in the last 30 days

	Single-family homes	Condos & townhomes
Active listings	38	110
Median list price	$7,540,000	$1,582,500
Median list price per sq ft	$1,969/sq ft	$1,031/sq ft
Average days on market	163 days	122 days
Sold in the last 90 days	12	55
Median sold price (90 days)	$4,950,000	$1,380,000
Sale price as % of list price	90.8%	95.5%
Months of inventory	9.5 months	6 months
Median sold price vs. a year ago	+29%	+6.6%

Source: BeachesMLS via the Spark API. Active listings as of September 23, 2026; sold figures cover closings in the last 90 days, compared with the same 90 days one year earlier. Not an appraisal. How these figures are calculated.

Key Biscayne Home Sales by Month

Closed residential sales in Key Biscayne by closing month, from BeachesMLS. The current month is partial until it closes.

Month	Closed sales	Median sold price	Median $/sq ft	Avg days to sell	Sale-to-list
Oct 2025	14	$2,325,000	$1,015/sq ft	97 days	95.3%
Nov 2025	7	$2,150,000	$1,000/sq ft	95 days	94.6%
Dec 2025	19	$1,300,000	$1,000/sq ft	145 days	96.9%
Jan 2026	19	$1,300,000	$934/sq ft	180 days	95.7%
Feb 2026	18	$1,992,500	$938/sq ft	110 days	93.1%
Mar 2026	21	$1,250,000	$887/sq ft	171 days	96.5%
Apr 2026	23	$2,750,000	$1,029/sq ft	81 days	95%
May 2026	17	$1,550,000	$1,036/sq ft	121 days	95%
Jun 2026	26	$1,635,000	$982/sq ft	76 days	93.9%
Jul 2026	29	$1,330,000	$990/sq ft	95 days	95.1%
Aug 2026	21	$1,550,000	$1,022/sq ft	86 days	95.5%
Sep 2026 (to date)	6	$1,427,500	$949/sq ft	94 days	95.8%

Key Biscayne Inventory Over Time

Active listings, new listings and homes under contract in Key Biscayne, from BreakThru Realty's daily snapshots of BeachesMLS (recorded since 2026-09-16).

Date	Active listings	New this week	Under contract	Sold in 30 days	Median list (single-family)	Median list (condos)
2026-09-16	146	6	22	11	$7,950,000	$1,540,000
2026-09-17	145	6	23	11	$7,975,000	$1,525,000
2026-09-18	147	8	24	11	$7,720,000	$1,495,000
2026-09-19	149	10	24	11	$7,490,000	$1,510,000
2026-09-21	149	8	24	8	$7,490,000	$1,510,000
2026-09-22	151	8	24	8	$7,490,000	$1,550,000

Key Biscayne Rental Market at a Glance

Updated September 23, 2026 from BeachesMLS.

173homes for rent
$9,000/momedian asking rent
12new rentals this week
24leased in the last 30 days

	Houses & townhomes	Condos & apartments
Active rentals	29	144
Median asking rent	$19,450/mo	$8,000/mo
Median rent per sq ft	$6.33/sq ft	$5.34/sq ft
Average days on market	154 days	136 days
Leased in the last 90 days	15	103
Median leased rent (90 days)	$17,500/mo	$6,600/mo
Median leased rent vs. a year ago	+45.8%	+10%

Source: BeachesMLS via the Spark API. Asking rents are active rentals as of September 23, 2026; leased rents cover leases signed in the last 90 days, compared with the same 90 days one year earlier. Not an appraisal.

Home Prices in Key Biscayne

Over the last 90 days the median single-family home in Key Biscayne sold for $4,950,000 ($1,973 per square foot) and the median condo or townhome for $1,380,000 ($856 per square foot). Against the same 90 days a year earlier that is +29% for single-family homes and +6.6% for condos. Homes on the market now are asking a median $7,540,000 (single-family) and $1,582,500 (condos and townhomes). Medians describe the middle of the market; a waterfront estate and a garden condo pull in opposite directions, which is why the two segments are reported separately.

Inventory and the Pace of Sales

152 homes and condos are for sale in Key Biscayne today, 10 of them listed in the last seven days, and 22 are under contract. 10 sales closed in the last 30 days. Single-family homes carry 9.5 months of inventory and condos 6 months, which makes the single-family side a buyer's market: under four months favours sellers, over six favours buyers. Active single-family listings have been on the market 163 days on average, condos 122 days.

Single-Family Homes vs. Condos and Townhomes

The two halves of the Key Biscayne market move differently. Single-family sellers achieved 90.8% of their asking price on the typical sale in the last 90 days after 178 days on market; condo and townhome sellers achieved 95.5% after 79 days. 12 single-family homes and 55 condos and townhomes closed in that window. Condo pricing also carries the building's fees, reserves and rental rules, so a low list price in an older tower is not the same deal as a low list price on a lot.

The Last Twelve Months

220 residential sales closed in Key Biscayne over the last twelve months. The whole-market median sold price moved from $2,325,000 in Oct 2025 to $1,550,000 in Aug 2026, a change of -33.3%. The month-by-month table below shows closings, median price, price per square foot and days to sell; the current month is partial until it closes.

Selling a Home in Key Biscayne

A Key Biscayne home is priced by its water, its lot and its building as much as its square footage. For a house, lot size, elevation, canal or bay frontage, the dock and seawall, and whether it is original, renovated or new construction can separate two homes on the same street; for a condo, the building, floor, exposure, view and the association's finances do the same. Your buyers often compare Key Biscayne with Brickell, Coconut Grove and Miami Beach, so we price from the closed sales that match your home. Start with a free valuation built on recent MLS sales, ask for a full comparative market analysis, or request a guaranteed cash offer if you need a fast, as-is sale.

Investing in Key Biscayne

Investors on Key Biscayne usually buy one of three things: an original 1950s house to renovate or replace with new construction, a condo in an oceanfront building to lease on an annual or seasonal basis, or a large residence to use for part of the year and lease for the rest. Each has its own checks. A rebuild depends on the village's zoning and permits, the flood zone and the FEMA substantial-improvement rule, which requires an older home below flood elevation to be brought up to current standards once the work passes half its value. A rental depends on the village's rules on lease length and each association's approval process and leasing limits, so confirm both before you buy. The rental pages show live Key Biscayne rents, and the price-reduced page tracks sellers who have cut the price.

Thinking About Selling in Key Biscayne?

The median Key Biscayne single-family home closed at $4,950,000 in the last 90 days and took 178 days to go under contract. Prices in your neighborhood may differ from the city average. Enter your address for a property-specific valuation built on the closed sales nearest your home.

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Key Biscayne Housing Market FAQ

What is the median home price in Key Biscayne?: Over the last 90 days the median sold price in Key Biscayne was $4,950,000 for single-family homes and $1,380,000 for condos and townhomes, from BeachesMLS closings as of September 23, 2026. Homes for sale now are asking a median $7,540,000 and $1,582,500 respectively. These figures refresh daily on this page.
Is Key Biscayne a buyer's market or a seller's market?: By months of inventory, the single-family side of Key Biscayne is a buyer's market right now: 9.5 months of supply, with condos and townhomes at 6 months (balanced market). Under four months of supply favours sellers, over six favours buyers, and the two segments often sit on different sides of that line in South Florida.
How long does it take to sell a home in Key Biscayne?: Single-family homes that closed in Key Biscayne in the last 90 days had been on the market 178 days on average, and condos and townhomes 79 days. Sellers achieved 90.8% of their asking price on the typical single-family sale and 95.5% on the typical condo sale. Well-priced homes go under contract in the first few weeks; the average is pulled up by listings that started too high.
Are home prices in Key Biscayne going up or down?: Over the last twelve months the whole-market median sold price in Key Biscayne moved from $2,325,000 (Oct 2025) to $1,550,000 (Aug 2026), -33.3%. Comparing the last 90 days with the same 90 days a year earlier, single-family medians are +29% and condo medians +6.6%. Monthly medians swing with the mix of homes that happened to close, so the direction over several months matters more than any one month.
What is the median rent in Key Biscayne?: The median asking rent in Key Biscayne is $9,000 a month across 173 active rentals: $19,450 for houses and townhomes and $8,000 for condos and apartments. The Key Biscayne rentals hub carries the full rental market table, updated daily.
Where do these numbers come from?: Every figure is computed from BeachesMLS through the Spark API: active listings are counted as of the refresh date (September 23, 2026), sold figures cover closings in the last 90 days compared with the same 90 days a year earlier, and the monthly table buckets closed sales by closing date. Statistics refresh once a day and are cached; inventory over time comes from our own daily snapshots. Nothing on this page is typed by hand, and none of it is an appraisal. BreakThru Realty's market data methodology page explains every calculation, and broker of record Tyson E. Sam reviews the method and the written guidance in this report.