Homes for sale in Key Biscayne
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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.