Key Biscayne Real Estate Market Overview in October 2026
Sale Market Overview
Median Sale Price: The median sale price for all bedrooms houses and condos in Key Biscayne is $6,035,658 in October 2026, averaging $2,349 per square foot.
Median Sold Price: The median sold price for all bedrooms houses and condos in Key Biscayne in the last 12 months is $2,672,618, averaging $1,272 per square foot.
Properties Available for Sale: There are 158 properties for sale in Key Biscayne, of which 49 are houses and 109 are condominium units listed for sale now.
Days in the Market: Key Biscayne properties are selling after an average of 110 days on the market.
Rental Market Overview
Median List Price for Rent: The median rental price for all bedrooms houses and condos in Key Biscayne is $14,111 in October 2026, averaging $7 per square foot.
Average Rent: The average rent in Key Biscayne for all bedrooms houses and condos in the last 12 months is $9,836 per month, averaging $5 per square foot.
Properties Available for Rent: There are 211 properties for rent right now in Key Biscayne, of which 37 are houses and 174 are condos.
Days in the Market: Key Biscayne properties are renting after an average of 89 days on the market.
Pros and Cons for Buying a Property in Key Biscaine in October 2026
Pros of Buying a Property in Key Biscayne
Exclusive Location: With a limited number of properties on an exclusive island, buyers invest in a unique and prestigious location.
Long-term Value: Despite current market fluctuations, the long-term value of properties in Key Biscayne has traditionally been strong due to its desirability and limited supply.
Strong Rental Market: The rental market in Key Biscayne is robust, with high median rents that can yield significant returns for property owners.
Wealthy Demographics: With a per capita income of $79,743, which is wealthy relative to Florida and the nation, the demographics of Key Biscayne support a high-end rental and sales market​​.
Cons of Buying a Property in Key Biscayne
High Entry Price: The cost of entry into the Key Biscayne market is steep, making it challenging for average buyers.
Market Volatility: Like any upscale market, Key Biscayne can experience significant price fluctuations, which may impact short-term investments.
High Cost of Living: The cost of living in Key Biscayne is significantly higher than the national average, with utility, groceries, and transportation costs all above average due to its island location.
Sold Units (30 days)
Unit
Beds / Baths
Liv Area SqFt
Sold Price
Price/SqFt
Close Date
613 Ocean Dr #5D
2 BR / 2.0 BA
1,496 SqFt
$1,660,000
$1,110/Sqft
09/30/2026
738 Fernwood Rd
3 BR / 2.0 BA
1,312 SqFt
$2,800,000
$2,134/Sqft
09/28/2026
181 Crandon Blvd #308
3 BR / 2.0 BA
1,720 SqFt
$1,115,000
$648/Sqft
09/25/2026
425 Grapetree Dr #211
2 BR / 3.0 BA
1,404 SqFt
$1,600,000
$1,140/Sqft
09/25/2026
300 Galen Dr #306
2 BR / 2.0 BA
1,068 SqFt
$650,000
$609/Sqft
09/25/2026
155 Ocean Lane Dr #300
3 BR / 2.0 BA
1,930 SqFt
$1,700,000
$881/Sqft
09/24/2026
164 Mashta Dr
5 BR / 5.0 BA
3,595 SqFt
$4,920,624
$1,369/Sqft
09/24/2026
201 Crandon Blvd #707
2 BR / 2.0 BA
1,880 SqFt
$2,100,000
$1,117/Sqft
09/22/2026
1121 Crandon Blvd #E405
2 BR / 2.0 BA
1,409 SqFt
$1,160,000
$823/Sqft
09/15/2026
1121 Crandon Blvd #E1205
2 BR / 2.0 BA
1,409 SqFt
$1,325,000
$940/Sqft
09/14/2026
1121 Crandon Blvd #F403
2 BR / 2.0 BA
1,597 SqFt
$1,530,000
$958/Sqft
09/14/2026
151 Crandon Blvd #241
2 BR / 2.0 BA
1,532 SqFt
$1,400,000
$914/Sqft
09/14/2026
600 Grapetree Dr #10BN
3 BR / 3.0 BA
2,943 SqFt
$2,900,000
$985/Sqft
09/08/2026
881 Ocean Dr #7D
3 BR / 2.0 BA
1,875 SqFt
$2,220,000
$1,184/Sqft
09/04/2026
Average Price: $1,184/Sqft
Rented Units (30 days)
Unit
Beds / Baths
Liv Area SqFt
Rented Price
Price/SqFt
Close Date
141 Crandon Bl #347
2 BR / 2.0 BA
1,600 SqFt
$5,335
$3/Sqft
10/01/2026
881 Ocean Dr #22F
3 BR / 2.0 BA
1,875 SqFt
$7,000
$4/Sqft
10/01/2026
151 Crandon Blvd #120
2 BR / 2.0 BA
1,454 SqFt
$5,750
$4/Sqft
09/30/2026
3 BR / 2.0 BA
1,360 SqFt
$5,150
$4/Sqft
09/29/2026
101 Crandon Blvd #474
2 BR / 2.0 BA
1,600 SqFt
$6,800
$4/Sqft
09/29/2026
526 Satinwood Dr
4 BR / 3.0 BA
2,112 SqFt
$11,500
$5/Sqft
09/29/2026
155 Ocean Lane Dr #1111
2 BR / 2.0 BA
1,260 SqFt
$5,900
$5/Sqft
09/25/2026
350 Redwood Ln
5 BR / 5.1 BA
3,633 SqFt
$18,000
$5/Sqft
09/25/2026
600 Grapetree Dr #7ES
3 BR / 3.0 BA
2,281 SqFt
$12,500
$5/Sqft
09/22/2026
575 Crandon Blvd #413
3 BR / 2.0 BA
1,700 SqFt
$6,000
$4/Sqft
09/22/2026
630 Allendale Rd
4 BR / 3.0 BA
2,196 SqFt
$15,500
$7/Sqft
09/19/2026
199 Ocean Lane Dr #1206
2 BR / 2.0 BA
1,260 SqFt
$6,150
$5/Sqft
09/18/2026
151 Crandon Blvd #441
2 BR / 2.0 BA
1,532 SqFt
$6,200
$4/Sqft
09/16/2026
150 Ocean Lane Dr #8B
2 BR / 2.0 BA
1,335 SqFt
$4,500
$3/Sqft
09/16/2026
1111 Crandon Blvd #A807
3 BR / 2.0 BA
1,782 SqFt
$9,200
$5/Sqft
09/08/2026
1111 Crandon Blvd #B1004
2 BR / 2.0 BA
1,409 SqFt
$7,800
$6/Sqft
09/04/2026
199 Ocean Lane Dr #113
2 BR / 2.0 BA
1,260 SqFt
$4,500
$4/Sqft
09/03/2026
151 Crandon Blvd #822
2 BR / 2.0 BA
1,547 SqFt
$6,000
$4/Sqft
09/03/2026
Average Price: $4/Sqft
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