Condominium
445 Grand Bay Drive # 1A
445 Grand Bay Drive # 1A, Key Biscayne FL 33149 Get directions
$18,900,000
5 Beds · 5 Baths · 8,435 SqFt
See estimated monthly costThis listing is courtesy of One Sotheby's International Realty. Brigitte Nachtigall
Overview
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.
Facts & features
Interior
- Living area (sq ft)
- 8,435
- Full bathrooms
- 5
- Half bathrooms
- 1
- Furnished
- Unfurnished
- Built-in Features
- Closet Cabinetry
- Entrance Foyer
- Pantry
- Volume Ceilings
- Walk-In Closet(s)
- Wet Bar
- Den/Library/Office
- Family Room
- Great Room
Building & exterior
- Year built
- 1997
- Waterfront
- Yes
- Bay
- Ocean View
- Direct Ocean
- Ocean Access
- Ocean Front
- Open Balcony
- 2 Or More Spaces
- Covered
- Valet
- No Rv/Boats
- No Trucks/Trailers
HOA (homeowners association)
- Association fee
- $0 per month
- Pets allowed
- Yes
- Bike Storage
- Community Room
- Exercise Room
- Pool
- No Trucks/Rv'S
- Ok To Lease
- Restrictions Or Possible Restrictions
Taxes
- Annual tax
- $54,141
- Tax year
- 2025
- Parcel number
- 24-52-05-049-1350
Assigned schools
- Elementary
- Keybiscayne
Listing
- MLS number
- A11954185
- Property type
- Condominium
- Price per SqFt
- $2,241
- Subdivision
- GRAND BAY RESIDENCES COND,GRAND BAY
- On market since
- Feb 14, 2026
- Days on market
- 180
Estimated monthly cost
$114,255 per month
- Principal & interest (30 yr)
- $95,569
- Property tax
- $4,512
- Insurance (estimated)
- $14,175
An estimate for comparison only — not a loan offer, a quote, or a commitment to lend. Actual taxes, insurance and financing terms will differ.
Location
Nearby schools
- Key Biscayne K-8 Center
- St Christophers - By-The-Sea Montessori School
- St Agnes Academy
- Key Biscayne Presbyterian School
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