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  3. 445 Grand Bay Drive #ph1a Key Biscayne, FL - 33149
  • MLS® #: A11954185
  • 445 Grand Bay Drive #ph1a
  • Key Biscayne, FL 33149
  • $18,900,000
  • 5 Beds, 6 Bath, 8,435 SqFt
  • Residential

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.

Essential Information

  • MLS® #A11954185
  • Price$18,900,000
  • CAD Dollar$26,786,025
  • UK Pound£14,102,897
  • Euro€16,556,438
  • HOA Fees9923
  • Bedrooms5
  • Bathrooms6.00
  • Full Baths5
  • Half Baths1
  • Square Footage8,435
  • Year Built1997
  • TypeResidential
  • Sub-TypeCondominium
  • Unit Floor14
  • StatusActive
  • HOPAYes

Restrictions

Parking - No RV, Parking - No Trailer, Parking - No Truck

Community Information

  • Address445 Grand Bay Drive #ph1a
  • Area2520
  • SubdivisionGRAND BAY RESIDENCES COND
  • DevelopmentGRAND BAY
  • CityKey Biscayne
  • CountyMiami-Dade
  • StateFL
  • Zip Code33149

Amenities

  • UtilitiesCable Available
  • Parking Spaces2
  • ViewBay, Direct Ocean, Ocean
  • Is WaterfrontYes
  • Pets AllowedYes, Pet Restrictions Possible

Amenities

Fitness Center, Management, Pool, Bike Storage, Community Room

Parking

Covered, Garage Door Opener, Valet

Waterfront

Deeded Beach Access, Ocean Access, Ocean Front

Interior

  • HeatingElectric
  • CoolingElectric
  • # of Stories14

Interior Features

Built-in Features, Entrance Foyer, High Ceilings, Pantry, Wet Bar, Walk-In Closet(s), Closet Cabinetry

Appliances

Electric Water Heater, Dryer, Disposal, Dishwasher, Electric Range, Ice Maker, Microwave, Oven, Refrigerator, Washer

Exterior

  • Exterior FeaturesBalcony
  • WindowsBlinds, Drapes, Rods
  • ConstructionCBS

School Information

  • ElementaryKey Biscayne K-8
  • MiddlePonce De Leon
  • HighCoral Gables
  • Office: One Sotheby's International Realty

Property Location

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445 Grand Bay Drive #ph1a on www.jupiteroceanfronthomes.us

Offered at the current list price of $18,900,000, this home for sale at 445 Grand Bay Drive #ph1a features 5 bedrooms and 6 bathrooms. This real estate listing is located in GRAND BAY RESIDENCES COND of Key Biscayne, FL 33149 and is approximately 8,435 square feet. 445 Grand Bay Drive #ph1a is listed under the MLS ID of A11954185 and has been available through www.jupiteroceanfronthomes.us for the Key Biscayne real estate market for 145 days.

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All listings featuring the BMLS logo are provided by Beaches MLS Inc. Copyright 2026 Beaches MLS. This information is not verified for authenticity or accuracy and is not guaranteed.
© 2026 Beaches Multiple Listing Service, Inc. All rights reserved.

Listing information last updated on July 12th, 2026 at 7:35pm CDT.