$18,900,000
5 bd · 6 ba · 8,435 sqft
445 Grand Bay Drive # PH-1A, Key Biscayne, FL 33149
GRAND BAY
Key Biscayne Condo Buildings
Key Biscayne is Miami's island village — a barrier island beyond the Rickenbacker Causeway, bracketed by two state parks, where a small-town grid of shops and schools sits between the Atlantic beaches and Biscayne Bay. Its condos range from the gated Key Colony and Ocean Club communities to the bayfront Grand Bay pair, the Ritz-Carlton resort residences and Oceana, the island's modern oceanfront flagship.
93
For Sale
140
For Rent
$1.5M
Median Price
$1,015
Median $/SqFt
$8,000/mo
Median Rent
$19M
Top Listing
Every Key Biscayne Tower, Ranked by Price
| Building | Year | Stories | For Sale | For Rent | Price Range | |
|---|---|---|---|---|---|---|
 | Grand Bay Residences 445 Grand Bay Dr, Key Biscayne, FL 33149 | — | — | 3 | — | $4.0M – $19M |
 | Oceana Key Biscayne 350 Ocean Dr, Key Biscayne, FL 33149 | 2014 | — | 7 | 10 | $3.5M – $18M |
 | Commodore Club 155–199 Ocean Lane Dr, Key Biscayne, FL 33149 | — | — | 14 | 7 | $724K – $4.5M |
 | Grand Bay Tower 430 Grand Bay Dr, Key Biscayne, FL 33149 | — | — | 1 | — | $3.9M – $3.9M |
 | Casa del Mar 881 Ocean Dr, Key Biscayne, FL 33149 | — | — | 7 | 7 | $1.5M – $3.8M |
 | Island House 200 Ocean Lane Dr, Key Biscayne, FL 33149 | — | — | 4 | 2 | $1.2M – $3.5M |
 | Ocean Towers 791 Crandon Blvd, Key Biscayne, FL 33149 | — | — | 1 | 5 | $3.3M – $3.3M |
 | Key Colony4 towers 101–251 Crandon Blvd, Key Biscayne, FL 33149 | — | — | 11 | 33 | $875K – $2.9M |
 | Sands of Key Biscayne 605–613 Ocean Dr, Key Biscayne, FL 33149 | — | — | 1 | 5 | $2.2M – $2.2M |
 | Mar Azul 600 Grapetree Dr, Key Biscayne, FL 33149 | — | — | 1 | — | $1.9M – $1.9M |
 | Towers of Key Biscayne 1111–1121 Crandon Blvd, Key Biscayne, FL 33149 | — | — | 2 | 15 | $1.2M – $1.4M |
 | Club Towers 785 & 789 Crandon Blvd, Key Biscayne, FL 33149 | — | — | — | 2 | — |
 | Lake Tower 765 Crandon Blvd, Key Biscayne, FL 33149 | — | — | — | 2 | — |
 | The Ritz-Carlton Key Biscayne 455 Grand Bay Dr, Key Biscayne, FL 33149 | — | — | — | — | — |
Key Biscayne's Most Exclusive Condo Listings
The most significant Key Biscayne listings on the market today — see everything on the map search or browse by ZIP: 33149.
$18,500,000
5 bd · 6 ba · 4,566 sqft
799 Crandon Blvd # PH-8, Key Biscayne, FL 33149
OCEAN CLUB
$17,900,000
5 bd · 6 ba · 4,764 sqft
350 Ocean Dr # LPH2N, Key Biscayne, FL 33149
OCEANA KEY BISCAYNE
$11,495,000
4 bd · 6 ba · 3,787 sqft
350 Ocean Dr # 701N, Key Biscayne, FL 33149
Oceana Key Biscayne
$8,950,000
4 bd · 7 ba · 3,798 sqft
350 E Ocean Dr # 301N, Key Biscayne, FL 33149
Oceana Key Biscayne
$6,900,000
2 bd · 4 ba · 3,950 sqft
430 Grand Bay Dr # 801, Key Biscayne, FL 33149
Grand Bay
$5,950,000
4 bd · 5 ba · 4,200 sqft
785 Crandon Blvd # 205/305, Key Biscayne, FL 33149
Ocean Club
$5,490,000New
4 bd · 6 ba · 3,581 sqft
799 Crandon Blvd # 202, Key Biscayne, FL 33149
THE OCEAN CLUB
Key Biscayne Market Report
Over the last 12 months, 178 condo sales closed in Key Biscayne at a median of $1.4M ($900/sqft), median 56 days on market. Median sold prices are up 14.3% year-over-year. 321 leases were signed at a median of $6,600/mo ($4.37/sqft). Computed from recorded MLS closings; updates automatically.
$1.4M
Median (12 mo)
178
Sales (12 mo)
56 days
Median DOM
Last 12 Months by Bedroom Count
| Residence | Sales | Median Sold | Sold $/SqFt | DOM | Leases | Median Rent | Rent $/SqFt |
|---|---|---|---|---|---|---|---|
| Studio | 4 | $1.0M | $2,021 | 34 | 1 | $2,600 | $6.50 |
| 1 Bed | 19 | $530K | $710 | 84 | 33 | $3,200 | $3.72 |
| 2 Bed | 85 | $1.3M | $833 | 61 | 195 | $6,300 | $4.25 |
| 3 Bed | 58 | $2.1M | $1,000 | 48 | 83 | $10,000 | $5.18 |
| 4+ Bed | 12 | $3.5M | $1,076 | 77 | 9 | $16,000 | $5.05 |
Month-by-month table — All
| Month | Sales | Median Sold | Sold $/SqFt | DOM | Leases | Median Rent | Rent $/SqFt |
|---|---|---|---|---|---|---|---|
| Nov 2025 | 6 | $2.1M | $1,000 | 84 | 21 | $6,900 | $4.14 |
| Dec 2025 | 16 | $1.3M | $849 | 57 | 36 | $6,250 | $4.68 |
| Jan 2026 | 16 | $1.2M | $923 | 91 | 26 | $7,825 | $4.20 |
| Feb 2026 | 14 | $1.8M | $905 | 47 | 22 | $6,100 | $4.21 |
| Mar 2026 | 18 | $1.2M | $879 | 99 | 25 | $6,150 | $4.36 |
| Apr 2026 | 16 | $1.8M | $914 | 43 | 25 | $6,500 | $4.25 |
| May 2026 | 15 | $1.5M | $1,017 | 40 | 25 | $8,500 | $4.83 |
| Jun 2026 | 22 | $1.5M | $900 | 36 | 30 | $6,500 | $4.25 |
| Jul 2026 | 22 | $1.2M | $788 | 35 | 45 | $7,000 | $4.39 |
| Aug 2026 | 18 | $1.5M | $939 | 43 | 26 | $7,600 | $5.04 |
| Sep 2026 | 13 | $1.5M | $940 | 94 | 22 | $6,600 | $4.49 |
| Oct 2026 | 2 | $1.4M | $1,880 | 61 | 18 | $7,000 | $4.19 |
Living on Key Biscayne
Key Biscayne is the island Miami keeps for itself — a barrier island past the tollgate of the Rickenbacker Causeway, with Crandon Park's beaches on one end, the lighthouse at Bill Baggs on the other, and a genuine village in between: a K-8 school, a green, grocery runs by golf cart, and the Atlantic never more than a few blocks away. The village incorporated in 1991 largely to control its own zoning, and it shows — heights stay low, density stays fixed, and the island's last new condominium, Oceana, arrived in 2014.
The condo market wraps the island's two waterfronts. On the ocean: Key Colony's four-section gated village, Oceana's Arquitectonica flagship, Casa del Mar, the Sands, Commodore Club, Island House, Mar Azul and the Towers of Key Biscayne. Inside the Ocean Club's gates: Club Towers, Lake Tower and Ocean Towers. And on the bay side, the resort quarter: Grand Bay Residences, Grand Bay Tower and The Ritz-Carlton with its spa, tennis center and hotel service.
Buyers come to Key Biscayne for permanence: an island where supply is capped by ordinance, ownership is generational, and daily life — school, beach, causeway rides, dinner in the village — happens within a mile. It behaves less like a condo market and more like a club with real estate attached. Live inventory, pricing and a twelve-month market report for every building are linked from the directory above.