
$18,900,000
CondominiumActive445 Grand Bay Drive # 1A, Key Biscayne FL 33149
MLS #A11954185About This Property
High above the turquoise waters of Key Biscayne rises a penthouse that simply cannot be replicated. Once featured in Architectural Digest, this legendary corner residence at Grand Bay is a statement of scale, design, and presence. From sunrise over the Atlantic to glittering sunsets across Biscayne Bay and the Miami skyline, the views are cinematic in every direction, offering endless blue water, golden light, and exceptional privacy. Spanning an extraordinary 8,435 square feet under air and 2,825 square feet of terraces, totaling 11,260 square feet as per the developer’s floor plan, the residence is defined by soaring 12-foot ceilings and grand proportions throughout. A dramatic foyer leads to a spectacular Grand Room designed for both intimate living and large-scale entertaining. The formal dining room is separate and elegant, while the completely remodeled kitchen and family room provide comfort and functionality. The fully renovated private library and custom bar enhance the home’s entertaining appeal. The primary suite is serene and expansive. All the bathrooms have just been completely remodeled, offering a fresh spa-inspired experience finished to today’s highest standards. Four (4) additional en-suite bedrooms ensure comfort and privacy. The terraces offer expansive outdoor living in the sky, perfect for sunrise mornings and sunset evenings overlooking the water and skyline. This is not simply a penthouse. It is a landmark residence, rare and impossible to duplicate.
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About Key Biscayne
Key Biscayne is a barrier island community just a bridge ride from Brickell, offering an island lifestyle wrapped around Crandon Park, Cape Florida State Park, and the Crandon Golf Course. The village is known for its safety, top-rated schools, and walkable pace, with residents ranging from young families to international buyers seeking secondary residences. Limited inventory and tight geography keep prices premium relative to mainland Miami.
Property Details
Property Type
Condominium
Year Built
1997
Living Area
8,435 sq ft
Bedrooms
5
Bathrooms
6
Pool
No
Waterfront
Yes
Cooling
Electric
Heating
Electric
Flooring
Carpet, Marble, Wood
Construction
CBS Construction
Style
Corner Unit, High Rise, Penthouse
HOA Fee
None
Annual Taxes
$54,141 (2025)
Days on Market
112
MLS #
A11954185
Features & Amenities
Interior
Appliances
Exterior
Other
Nearby Schools
Assigned public schools pulled from Miami-Dade County Public Schools’s official attendance-boundary data. Verify current boundaries with MDCPS before buying — zones can change year to year.
School data source: Miami-Dade County Open Data Hub
Similar Homes in Key Biscayne
Location
City
Key Biscayne
State
FL
ZIP Code
33149
County
Miami-Dade County
Listing provided by Brigitte Nachtigall at One Sotheby's International Realty. Data from Miami Association of REALTORS®. All information deemed reliable but not guaranteed. Listing #A11954185.