445 Grand Bay Dr #PH-1A, Key Biscayne, FL 33149
For Sale $18,900,000
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Contact the Listing Agent directly:
Listing Agent: Brigitte Nachtigall
Agent Phone:
305-710-9664
Agent Email:
brigitte@bnachtigall.com
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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.
Built-in Features
Entrance Foyer
High Ceilings
Pantry
Wet Bar
Walk-In Closet(s)
Closet Cabinetry
Fitness Center
Management
Pool
Bike Storage
Community Room
Taxes: $54,141.00
Tax Year: 2025
Association Fee: $9,923.00
Association Fee Frequency: Monthly
Balcony
Electric Water Heater
Dryer
Disposal
Dishwasher
Electric Range
Ice Maker
Microwave
Oven
Refrigerator
Washer
Bay
Direct Ocean
Ocean
Deeded Beach Access
Ocean Access
Ocean Front
Elementary School: Key Biscayne K-8
Middle School: Ponce De Leon
Junior High: Ponce De Leon
High School: Coral Gables
MLS Area: 2520
Total Square Footage: 11,260
Price per Square Feet: $2,240.66
Total Rooms: 3
Total Floors: 14
Construction: Cbs
Date Listed: 2026-02-14 00:00:00
Furnished: Unfurnished
Windows: Blinds, Drapes, Rods
Parking: Covered, Garage Door Opener, Valet
Flooring: Carpet, Marble, Wood
Heating: Electric
Cooling: Electric
Security: Fire Alarm, Secured Garage/Parking, Security Guard, Smoke Detector(S), Elevator Secure
55+ Community: Y
Pets: Yes, Pet Restrictions Possible
Restrictions: Parking - No Rv, Parking - No Trailer, Parking - No Truck
Parcel ID: 2452050491350
Amenities: Fitness Center, Management, Pool, Bike Storage, Community Room
Listing Courtesy Of: One Sotheby's International Realty
brigitte@bnachtigall.com
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.
Property Details
Price: $18,900,000
Sq Ft: 8,435
($2,241 per
sqft)
Bedrooms: 5
Bathrooms: 5
Partial Baths: 1
Unit On Floor: 14
City: Key Biscayne
County: Miami-Dade
Type: Condo
Development: Grand Bay
Subdivision: Grand Bay Residences Cond
Year Built: 1997
Listing Number: A11954185
Status Code: A-Active
Taxes: $54,141.00
Tax Year: 2025
Application Fee: $150.00
Garage:
Furnishings: Unfurnished
Pets Allowed: Yes, Pet Restrictions Possible
Interior Features:
Built-in Features
Entrance Foyer
High Ceilings
Pantry
Wet Bar
Walk-In Closet(s)
Closet Cabinetry
Amenities:
Fitness Center
Management
Pool
Bike Storage
Community Room
Financial Information:
Taxes: $54,141.00
Tax Year: 2025
Association Fee: $9,923.00
Association Fee Frequency: Monthly
Exterior Features:
Balcony
Equipment:
Electric Water Heater
Dryer
Disposal
Dishwasher
Electric Range
Ice Maker
Microwave
Oven
Refrigerator
Washer
View:
Bay
Direct Ocean
Ocean
Waterfront Description:
Deeded Beach Access
Ocean Access
Ocean Front
School Information:
Elementary School: Key Biscayne K-8
Middle School: Ponce De Leon
Junior High: Ponce De Leon
High School: Coral Gables
Additional Information:
MLS Area: 2520
Total Square Footage: 11,260
Price per Square Feet: $2,240.66
Total Rooms: 3
Total Floors: 14
Construction: Cbs
Date Listed: 2026-02-14 00:00:00
Furnished: Unfurnished
Windows: Blinds, Drapes, Rods
Parking: Covered, Garage Door Opener, Valet
Flooring: Carpet, Marble, Wood
Heating: Electric
Cooling: Electric
Security: Fire Alarm, Secured Garage/Parking, Security Guard, Smoke Detector(S), Elevator Secure
55+ Community: Y
Pets: Yes, Pet Restrictions Possible
Restrictions: Parking - No Rv, Parking - No Trailer, Parking - No Truck
Parcel ID: 2452050491350
Amenities: Fitness Center, Management, Pool, Bike Storage, Community Room
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Map of 445 Grand Bay Dr #PH-1A, Key Biscayne, FL 33149
Listing Courtesy Of: One Sotheby's International Realty
brigitte@bnachtigall.com