BreakThru Realty Key Biscayne Housing Market Report
In the 90 days to November 7, 2026, the median single-family home in Key Biscayne sold for $5,060,312 and the median condo or townhome for $1,500,000; 143 homes and condos are for sale. By months of inventory, both are a buyer's market. BreakThru Realty analyzes BeachesMLS data daily to track home prices, inventory, sales, days on market and market direction in Key Biscayne, Florida; nothing here is typed by hand.
Key Biscayne Housing Market: Key Figures
- The median single-family home in Key Biscayne sold for $5,060,312 over the last 90 days, +18.4% against the same period a year earlier.
- The median condo or townhome sold for $1,500,000, +16.3% year over year.
- Single-family homes that sold averaged 142 days on the market; condos and townhomes 99 days.
- With 13.5 months of inventory, single-family homes are a buyer's market; condos and townhomes, at 9.3 months, are a buyer's market.
- 143 homes and condos were for sale in Key Biscayne on November 7, 2026.
Key Biscayne Market at a Glance
Updated November 7, 2026 from BeachesMLS.
- 143homes & condos for sale
- 8new listings this week
- 25under contract
- 78waterfront listings
- 40luxury listings ($5,000,000+)
- 10sold in the last 30 days
Newest Key Biscayne Homes for Sale
The 30 newest homes, condos and townhomes on the market in Key Biscayne, straight from BeachesMLS. The 30 listings on this page run from $419,000 to $19,750,000, with a median of $1,792,500, about $1,121 per square foot, and they have been listed a median of 20 days.
- The communities with the most listings here are Key Colony (5), Biscayne Key Estates (3), Cape Fla Sub (2), Casa Del Mar (2) and Key Biscayne Vi (2), 14 of the 30; the others are spread across 14 more communities.
- By type: 23 condos and 7 single-family homes.
- Bedrooms run from studios to 7, a median of 2; they were built between 1964 and 2025, a median of 1979, and 5 in the last ten years.
- 11 of the 30 have a pool, and 16 are on the water.
$829,000
150 Ocean Lane Drive 2A, Key Biscayne FL 33149
2 bd · 2 ba · 1,370 sq ft · Condominium- $1,695,000
251 Crandon Boulevard 304, Key Biscayne FL 33149
2 bd · 2 ba · 1,532 sq ft · Condominium 
$19,450,000
960 Mariner Drive, Key Biscayne FL 33149
6 bd · 9 ba · 7,742 sq ft · Single Family Residence
$1,495,000
251 Crandon Boulevard 525, Key Biscayne FL 33149
2 bd · 2 ba · 1,532 sq ft · Condominium
$520,000
300 Galen Drive 401, Key Biscayne FL 33149
2 bd · 2 ba · 965 sq ft · Condominium
$19,750,000
1080 Mariner Drive, Key Biscayne FL 33149
6 bd · 6.5 ba · 6,468 sq ft · Single Family Residence
$2,900,000
251 Crandon Boulevard 806, Key Biscayne FL 33149
2 bd · 2.5 ba · 2,220 sq ft · Condominium
$12,990,000
445 Grand Bay Drive PH-2A, Key Biscayne FL 33149
4 bd · 5.5 ba · 7,400 sq ft · Condominium
$480,000
251 Galen Drive 302, Key Biscayne FL 33149
1 bd · 1.5 ba · 854 sq ft · Condominium
$19,450,000
550 Harbor Drive, Key Biscayne FL 33149
7 bd · 7.5 ba · 6,497 sq ft · Single Family Residence
$750,000
201 Galen Drive 110, Key Biscayne FL 33149
2 bd · 2 ba · 1,187 sq ft · Condominium
$2,950,000
765 Crandon Boulevard 311, Key Biscayne FL 33149
3 bd · 3 ba · 2,602 sq ft · Condominium
$1,690,000
201 E Enid Drive 31, Key Biscayne FL 33149
2 bd · 2.5 ba · 1,460 sq ft · Condominium
$419,000
, Key Biscayne FL 33149
0 bd · 1 ba · 410 sq ft · Condominium
$4,450,000
177 Ocean Lane Drive 501, Key Biscayne FL 33149
3 bd · 2.5 ba · 1,930 sq ft · Condominium
$765,000
77 Crandon Boulevard 3C, Key Biscayne FL 33149
2 bd · 2 ba · 1,105 sq ft · Condominium
$970,000
141 Crandon Boulevard 329, Key Biscayne FL 33149
2 bd · 2 ba · 1,470 sq ft · Condominium
$852,000
177 OCEAN LANE Drive 402, Key Biscayne FL 33149
1 bd · 1.5 ba · 840 sq ft · Condominium
$1,250,000
151 Crandon Boulevard 320, Key Biscayne FL 33149
2 bd · 2 ba · 1,488 sq ft · Condominium
$2,400,000
881 Ocean Drive 23C, Key Biscayne FL 33149
2 bd · 2 ba · 1,875 sq ft · Condominium
$3,500,000
881 Ocean Drive 13H, Key Biscayne FL 33149
3 bd · 3 ba · 3,120 sq ft · Condominium
$9,950,000
360 Harbor Lane, Key Biscayne FL 33149
6 bd · 5.5 ba · 4,341 sq ft · Single Family Residence
$1,410,000
177 Ocean Lane Drive 405, Key Biscayne FL 33149
2 bd · 2 ba · 1,260 sq ft · Condominium
$7,599,000
315 Cypress Drive, Key Biscayne FL 33149
6 bd · 7 ba · 3,980 sq ft · Single Family Residence
$6,950,000
685 Harbor Lane, Key Biscayne FL 33149
5 bd · 5.5 ba · 5,421 sq ft · Single Family Residence
$515,000
290 Sunrise Drive 1-B, Key Biscayne FL 33149
1 bd · 1 ba · 679 sq ft · Condominium
$1,075,000
201 Crandon Boulevard 605, Key Biscayne FL 33149
1 bd · 2 ba · 1,059 sq ft · Condominium
$2,850,000
765 Crandon Boulevard 310, Key Biscayne FL 33149
3 bd · 3 ba · 2,602 sq ft · Condominium
$1,890,000
151 Crandon Boulevard 540, Key Biscayne FL 33149
2 bd · 2 ba · 1,532 sq ft · Condominium
$7,175,000
741 Harbor Drive, Key Biscayne FL 33149
6 bd · 5.5 ba · 4,043 sq ft · Single Family Residence
| Single-family homes | Condos & townhomes | |
|---|---|---|
| Active listings | 36 | 102 |
| Median list price | $7,774,500 | $1,550,000 |
| Median list price per sq ft | $1,981/sq ft | $1,035/sq ft |
| Average days on market | 169 days | 127 days |
| Sold in the last 90 days | 8 | 33 |
| Median sold price (90 days) | $5,060,312 | $1,500,000 |
| Sale price as % of list price | 95.1% | 94.6% |
| Months of inventory | 13.5 months | 9.3 months |
| Median sold price vs. a year ago | +18.4% | +16.3% |
Source: BeachesMLS. Active listings as of November 7, 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 |
|---|---|---|---|---|---|
| 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 | 22 | $1,525,000 | $996/sq ft | 87 days | 95.5% |
| Sep 2026 | 16 | $1,630,000 | $972/sq ft | 142 days | 94.7% |
| Oct 2026 | 10 | $3,287,500 | $1,442/sq ft | 90 days | 94.1% |
| Nov 2026 (to date) | 2 | $3,955,000 | $1,290/sq ft | 99 days | 92.5% |
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) |
|---|---|---|---|---|---|---|
| 2026-10-05 | 143 | 1 | 22 | 14 | $7,490,000 | $1,550,000 |
| 2026-10-06 | 143 | 2 | 21 | 15 | $7,490,000 | $1,550,000 |
| 2026-10-07 | 144 | 3 | 21 | 15 | $7,470,000 | $1,550,000 |
| 2026-10-09 | 143 | 4 | 22 | 14 | $7,470,000 | $1,599,900 |
| 2026-10-10 | 142 | 5 | 24 | 14 | $7,470,000 | $1,644,950 |
| 2026-10-11 | 144 | 7 | 24 | 14 | $7,470,000 | $1,587,450 |
| 2026-10-12 | 144 | 5 | 24 | 14 | $7,470,000 | $1,587,450 |
| 2026-10-13 | 138 | 6 | 27 | 15 | $7,450,000 | $1,690,000 |
| 2026-10-14 | 137 | 7 | 28 | 15 | $7,450,000 | $1,587,450 |
| 2026-10-15 | 136 | 6 | 29 | 12 | $7,450,000 | $1,575,000 |
| 2026-10-16 | 136 | 7 | 29 | 11 | $7,450,000 | $1,575,000 |
| 2026-10-17 | 137 | 6 | 29 | 11 | $7,470,000 | $1,575,000 |
| 2026-10-19 | 137 | 5 | 28 | 12 | $7,470,000 | $1,575,000 |
| 2026-10-20 | 140 | 8 | 27 | 12 | $7,544,500 | $1,510,000 |
| 2026-10-21 | 140 | 9 | 27 | 13 | $7,544,500 | $1,495,000 |
| 2026-10-22 | 142 | 11 | 28 | 13 | $7,544,500 | $1,495,000 |
| 2026-10-23 | 142 | 10 | 28 | 12 | $7,490,000 | $1,510,000 |
| 2026-10-24 | 143 | 12 | 28 | 12 | $7,544,500 | $1,510,000 |
| 2026-10-25 | 142 | 12 | 28 | 10 | $7,544,500 | $1,525,000 |
| 2026-10-26 | 142 | 8 | 28 | 7 | $7,544,500 | $1,525,000 |
| 2026-10-27 | 139 | 4 | 29 | 9 | $7,544,500 | $1,550,000 |
| 2026-10-28 | 136 | 3 | 29 | 11 | $7,599,000 | $1,550,000 |
| 2026-10-29 | 137 | 2 | 28 | 10 | $7,599,000 | $1,525,000 |
| 2026-10-30 | 137 | 0 | 27 | 11 | $7,544,500 | $1,550,000 |
| 2026-11-01 | 137 | 1 | 27 | 9 | $7,544,500 | $1,550,000 |
| 2026-11-02 | 136 | 1 | 27 | 9 | $7,544,500 | $1,525,000 |
| 2026-11-03 | 138 | 3 | 27 | 9 | $7,544,500 | $1,575,000 |
| 2026-11-04 | 138 | 3 | 27 | 9 | $7,544,500 | $1,575,000 |
| 2026-11-05 | 139 | 5 | 28 | 8 | $7,599,000 | $1,575,000 |
| 2026-11-06 | 140 | 6 | 28 | 8 | $7,599,000 | $1,550,000 |
Key Biscayne Rental Market at a Glance
Updated November 7, 2026 from BeachesMLS.
- 169homes for rent
- $9,500/momedian asking rent
- 9new rentals this week
- 28leased in the last 30 days
| Houses & townhomes | Condos & apartments | |
|---|---|---|
| Active rentals | 33 | 136 |
| Median asking rent | $18,500/mo | $8,950/mo |
| Median rent per sq ft | $6.29/sq ft | $5.33/sq ft |
| Average days on market | 159 days | 146 days |
| Leased in the last 90 days | 9 | 76 |
| Median leased rent (90 days) | $15,000/mo | $7,000/mo |
| Median leased rent vs. a year ago | -4.8% | +12% |
Source: BeachesMLS. Asking rents are active rentals as of November 7, 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 $5,060,312 ($1,519 per square foot) and the median condo or townhome for $1,500,000 ($958 per square foot). Against the same 90 days a year earlier that is +18.4% for single-family homes and +16.3% for condos. Homes on the market now are asking a median $7,774,500 (single-family) and $1,550,000 (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
143 homes and condos are for sale in Key Biscayne today, 8 of them listed in the last seven days, and 25 are under contract. 10 sales closed in the last 30 days. Single-family homes carry 13.5 months of inventory and condos 9.3 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 169 days on average, condos 127 days.
Single-Family Homes vs. Condos and Townhomes
The two halves of the Key Biscayne market move differently. Single-family sellers achieved 95.1% of their asking price on the typical sale in the last 90 days after 142 days on market; condo and townhome sellers achieved 94.6% after 99 days. 8 single-family homes and 33 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
222 residential sales closed in Key Biscayne over the last twelve months. The whole-market median sold price moved from $1,300,000 in Dec 2025 to $3,287,500 in Oct 2026, a change of +152.9%. 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.
What These Figures Mean If You Are Selling in Key Biscayne
The figures above describe all of Key Biscayne. Your price comes from the closed sales that match your home: the same neighborhood, the same water or golf course position, the same age and condition. The sale to list ratio shows how far buyers are negotiating below asking, days on market shows how long a well priced home waits, and months of inventory shows whether buyers or sellers hold the leverage this season. Request the review below and a broker applies all three to your address before you decide on a price.
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.
Follow the Key Biscayne Market as It Moves
Leave your email on this page and BreakThru Realty sends you each new Key Biscayne listing and price drop the day it reaches the MLS, with no account needed. Owners can request a review of what their own home is worth against these figures; buyers can ask for a showing or a search.
Thinking About Selling in Key Biscayne?
The median Key Biscayne single family home closed at $5,060,312 in the last 90 days and took 142 days to go under contract. Prices in your neighborhood may differ from the city average. Your buyer may already be looking. BreakThru Realty works with hundreds of prequalified buyers searching for properties. Enter your address and a licensed broker prepares your selling options from the closed sales nearest your home and checks it against the buyers on file.
- A value range built from comparable Key Biscayne sales, with the reasoning
- Whether a buyer already working with BreakThru Realty is looking for a property like yours
- The plan that reaches the rest of the market if no buyer on file fits
- An estimate of your selling costs and what you would keep after closing
- Your timing, privacy and goals, worked through before anything is listed
Selling in Key Biscayne?
See what your home is worth from recent Key Biscayne sales, the days on market and today's buyer demand. See what my home would sell for.
Buying in Key Biscayne?
Every home, condo and townhome for sale in Key Biscayne, straight from the MLS and updated through the day. Find my Key Biscayne home.
Investing in Key Biscayne?
Multifamily, rental and value add property in Key Biscayne, with the taxes, association fees and price history on every listing. Evaluate Key Biscayne investments.
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 $5,060,312 for single-family homes and $1,500,000 for condos and townhomes, from BeachesMLS closings as of November 7, 2026. Homes for sale now are asking a median $7,774,500 and $1,550,000 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: 13.5 months of supply, with condos and townhomes at 9.3 months (buyer's 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 142 days on average, and condos and townhomes 99 days. Sellers achieved 95.1% of their asking price on the typical single-family sale and 94.6% 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 $1,300,000 (Dec 2025) to $3,287,500 (Oct 2026), +152.9%. Comparing the last 90 days with the same 90 days a year earlier, single-family medians are +18.4% and condo medians +16.3%. Monthly medians swing with the mix of homes that happened to close, so the direction over several months matters more than any one month.
- Are condo prices in Key Biscayne going up or down?
- The median condo or townhome in Key Biscayne closed at $1,500,000 in the last 90 days, up 16.3% against the same 90 days a year earlier, with 9.3 months of condo inventory on the market and 99 days on average to go under contract, from BeachesMLS closings as of November 7, 2026. A citywide condo median blends every building and line; what a particular condo is worth comes from the closings in its own building, its association fees and its reserve and inspection status.
- What is the median rent in Key Biscayne?
- The median asking rent in Key Biscayne is $9,500 a month across 169 active rentals: $18,500 for houses and townhomes and $8,950 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: active listings are counted as of the refresh date (November 7, 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.
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