Grand Bay Residences Unit #PH-1A

Listed as Active
Price: $18,900,000
Price / sq ft $2,241
HOA fee: contact agent
Living area: 8435 sq ft / 784 m²
Bedrooms / baths 5 bed, 5 full / 1 half bath
Address: 445 Grand Bay Drive # PH-1A
Area: Key Biscayne
Year built: 1997
MLS # A11954185

Grand Bay Residences listing description

High above the turquoise waters of Key Biscayne rises a penthouse that simply cannot be replicated.

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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Copyright © 2026 Miami Association of REALTORS®. Listing provided courtesy of One Sotheby's International Realty — Information updated on 05/04/2026. All rights reserved. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange (IDX) program of the Miami Association of REALTORS®. IDX information is provided exclusively for consumers' personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed accurate by the MLS.