445 Grand Bay Dr, Key Biscayne, FL 33149 Unit #PH-1A

For Sale $18,900,000

Days Listed

180

Beds

5

Baths

5

Interior

8435 ft2 (784m2)

For Sale
52
445 Grand Bay Dr, Key Biscayne, FL 33149|5 BEDS | 5 BATHS |$18,900,000

Description

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.

Grand Bay Residences | Floor Plans

  • Days On Market:
    180
    Listed:
    Feb 14, 2026
  • Size:
    8435 ft2 (784m2)
    Rooms:
    5
  • Bathrooms:
    5
    Baths Half:
    1
  • Terms:
    All Cash, Conventional
    Property Facing:
    East
  • Last Modification:
    2 months ago
     

Property Taxes and Assessment

  • Annual Tax
    $54,141
  • Tax Year
    2025
  • Maintenance Fee
    $9,923
  • Association Fee
    N/A
  • Terms
    All Cash, Conventional

Property Features

Facts and features
Views
  • Bay
    Ocean View
    Direct Ocean
    Ocean Access
    Ocean Front
  • Interior Features
  • Built-in Features
    Closet Cabinetry
    Entrance Foyer
    Pantry
    Volume Ceilings
    Walk-In Closet(s)
    Wet Bar
    Den/Library/Office
    Family Room
    Great Room
  • Exterior Features
  • Open Balcony
  • Appliances
  • Dishwasher
    Disposal
    Dryer
    Electric Water Heater
    Ice Maker
    Microwave
    Electric Range
    Refrigerator
    Wall Oven
    Washer
  • Parking
  • 2 Or More Spaces
    Covered
    Valet
    No Rv/Boats
    No Trucks/Trailers
  • Other Facts
    Heating
  • Electric
  • Cooling
  • Electric
  • Electric
  • Fuse Box
  • Flooring
  • Carpet
    Marble
    Wood
  • Window Features
  • Blinds
    Drapes
  • Door Features
  • High Impact Doors
  • Amenities
    Patio And Porch Features
  • Open Balcony
  • Association Amenities
  • Bike Storage
    Community Room
    Exercise Room
    Pool
  • Architectural Style
  • Corner Unit
    High Rise
    Penthouse
  • Construction Materials
  • CBS Construction
  • Structure Type
  • Condo 5+ Stories
    Condo
  • Schools
    Elementary School
  • Keybiscayne
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    Sophia K. Albrecht

    Sophia K. Albrecht

    Lic. Real Estate Broker