Condo for Sale
$18,900,000
5 bd · 6 ba · 8,435 sqft
445 Grand Bay Drive # PH-1A, Key Biscayne, FL 33149
GRAND BAY
Key Biscayne is Miami's island village — a barrier island past the Rickenbacker Causeway, framed by two state parks, where a small-town grid of shops and schools rests between the Atlantic beaches and Biscayne Bay. Its condos span the gated Key Colony and Ocean Club communities, the bayfront Grand Bay pair, the Ritz-Carlton resort residences and Oceana, the island's modern oceanfront flagship. Browse all Key Biscayne homes for sale →






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The most significant Key Biscayne listings on the market today — see everything in Key Biscayne condos for sale or browse by ZIP: 33149.
Condo for Sale
$18,900,000
5 bd · 6 ba · 8,435 sqft
GRAND BAY
Condo for Sale
$18,500,000
5 bd · 6 ba · 4,566 sqft
OCEAN CLUB
Condo for Sale
$17,900,000
5 bd · 6 ba · 4,764 sqft
OCEANA KEY BISCAYNE
Condo for Sale
$12,990,000
4 bd · 6 ba · 7,400 sqft
GRAND BAY
Condo for Sale
$8,950,000
4 bd · 7 ba · 3,798 sqft
Oceana Key Biscayne
Condo for Sale
$6,690,000
2 bd · 4 ba · 3,950 sqft
Grand Bay
Condo for Sale
$5,950,000
4 bd · 5 ba · 4,200 sqft
Ocean Club
Condo for Sale
$5,490,000
4 bd · 6 ba · 3,581 sqft
THE OCEAN CLUB
Over the last 12 months, 177 condo sales closed in Key Biscayne at a median of $1.4M ($900/sqft), median 60 days on market. Median sold prices are up 12% year-over-year. 314 leases were signed at a median of $6,600/mo ($4.39/sqft). Computed from recorded MLS closings; updates automatically.
| 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 | 20 | $530K | $710 | 84 | 29 | $2,800 | $3.72 |
| 2 Bed | 81 | $1.2M | $833 | 61 | 196 | $6,300 | $4.25 |
| 3 Bed | 60 | $2.2M | $1,011 | 57 | 79 | $10,000 | $5.18 |
| 4+ Bed | 12 | $3.5M | $1,076 | 77 | 9 | $16,000 | $5.05 |
| Month | Sales | Median Sold | Sold $/SqFt | DOM | Leases | Median Rent | Rent $/SqFt |
|---|---|---|---|---|---|---|---|
| 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 | 6 | $1.4M | $1,438 | 83 | 25 | $7,000 | $4.37 |
| Nov 2026 | 1 | $3.3M | $1,162 | 80 | 7 | $7,600 | $5.39 |
Key Biscayne is the island Miami keeps for itself — a barrier island beyond the tollgate of the Rickenbacker Causeway, with Crandon Park's beaches at one end, the Bill Baggs lighthouse at the other, and a real village in between: a K-8 school, a green, grocery runs by golf cart, and the Atlantic never more than a few blocks off. The village incorporated in 1991 chiefly to run its own zoning, and the effect is plain — heights stay low, density stays capped, and Oceana, the island's most recent condominium, opened in 2014.
The condo market hugs both of the island's waterfronts. Facing 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. Behind the Ocean Club's gates: Club Towers, Lake Tower and Ocean Towers. And over on the bay side, the resort quarter: Grand Bay Residences, Grand Bay Tower and The Ritz-Carlton with its spa, tennis center and full hotel service.
Buyers are drawn to Key Biscayne for its permanence: an island where ordinance caps supply, ownership passes down through generations, and everyday life — school, beach, causeway rides, dinner in the village — unfolds inside a single mile. It acts less like a condo market than a club that happens to own real estate. Every building's live inventory, pricing and twelve-month market report is linked from the directory above.