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Homes for sale in Key Biscayne
Condominium

445 Grand Bay Drive # 1A

Key Biscayne, FL 33149
$18,900,000
Beds
5
Baths
5 + 1 half
Sq ft
8,435
Year built
1997
Price per sq ft
$2,241

Listing courtesy of Brigitte Nachtigall, One Sotheby's International Realty

About this home

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.

Details

Property

Type
Condominium
Style
Corner Unit, High Rise, Penthouse
Building
Condo 5+ Stories
Year built
1997
Stories
14
Building name
GRAND BAY
Subdivision
GRAND BAY RESIDENCES COND,GRAND BAY
County
Miami-Dade County
Faces
East
View
Bay, Ocean View, Direct Ocean
Waterfront
Ocean Access, Ocean Front
Flood zone
AE

Interior

Appliances
Dishwasher, Disposal, Dryer, Electric Water Heater, Ice Maker, Microwave, Electric Range, Refrigerator, Wall Oven, Washer
Flooring
Carpet, Marble, Wood
Cooling
Electric
Heating
Electric
Features
Built-in Features, Closet Cabinetry, Entrance Foyer, Pantry, Volume Ceilings, Walk-In Closet(s), Wet Bar, Den/Library/Office, Family Room, Great Room
Furnished
Unfurnished

Exterior and parking

Exterior
Open Balcony
Patio and porch
Open Balcony
Parking
2 Or More Spaces, Covered, Valet, No Rv/Boats, No Trucks/Trailers
Construction
CBS Construction

Community and fees

Amenities
Bike Storage, Community Room, Exercise Room, Pool
Maintenance includes
Cable Tv, Common Area, Landscaping/Lawn Maintenance, Manager, Security, Sewer, Water
Security
Fire Alarm, Smoke Detector, Elevator Secure, Secured Garage/Parking, Guard At Site
Pets
Restrictions Or Possible Restrictions
Annual taxes
$54,141
Terms
All Cash, Conventional
Minimum lease (days)
180

Neighborhood

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The data relating to real estate for sale or lease on this website comes in part from the Internet Data Exchange (IDX) program of MIAMI REALTORS® MLS. Listings are provided by participating brokers.

Information is deemed reliable but is not guaranteed and should be independently verified. It is subject to change and is provided for consumers’ personal, non-commercial use only, to identify properties they may be interested in. Listing last updated August 13, 2026.