
MIAMI REALTORS® MLS445 Grand Bay Drive PH-1A, Key Biscayne, FL 33149
- Beds
- 5
- Baths
- 6
- Sqft
- 8,435
- Home type
- Condominium
- Year built
- 1997
- Lot size
- —
- Price / sqft
- $2,241
- HOA
- $9,923/mo
- Community
- GRAND BAY RESIDENCES COND
Property 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.
Listing activity
- Days on market
- 251
- Listed
- Feb 14, 2026
- MLS listing updated
- Aug 13, 2026
- Feed last checked
- 6 minutes ago
Listed by Brigitte Nachtigall · One Sotheby's International Realty
Map
Map location is based on MLS-supplied coordinates. Verify the location before relying on it.
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms
- 5
- Bathrooms
- 6
- Bathrooms (decimal)
- 5.5
- Full bathrooms
- 5
- Half bathrooms
- 1
Rooms & features
- Rooms
- 3
- Interior features
- Built-in Features, Closet Cabinetry, Entrance Foyer, High Ceilings, Pantry, Walk-In Closet(s), Wet Bar
- Flooring
- Carpet, Marble, Wood
- Appliances
- Electric Water Heater, Dishwasher, Disposal, Dryer, Electric Range, Ice Maker, Microwave, Oven, Refrigerator, Washer
- Furnished
- Unfurnished
- Window features
- Blinds, Drapes, Rods
Heating & cooling
- Heating
- Electric
- Cooling
- Electric
Property
Parking
- Garage spaces
- 0
- Carport spaces
- 0
- Covered spaces
- 0
- Parking features
- Covered, Garage Door Opener, Valet
- Attached garage
- No
Exterior
- Stories
- 14
- Building area
- 11,260 sqft
- Exterior features
- Balcony
- View
- Ocean, Direct Ocean, Bay
- Waterfront
- Ocean Access, Deeded Beach Access, Ocean
- Waterfront property
- Yes
Construction
Type & style
- Home type
- Condominium
- Year built
- 1997
- New construction
- No
Materials
- Construction
- CBS
- Property condition
- Resale
- Faces
- East
Utilities & green energy
Utilities
- Electric
- Fuses
- Utilities
- Cable Available
Community & HOA
Community
- Subdivision
- GRAND BAY RESIDENCES COND
- MLS area
- 2520
- Security
- Elevator Secure, Fire Alarm, Secured Garage/Parking, Security Guard, Smoke Detector(s)
- Pets allowed
- Pet Restrictions Possible, Yes
- 55+ community
- Yes
Association
- Has association
- Yes
- Association fee
- $9,923 monthly
- Estimated monthly dues
- $9,923
- Amenities
- Pool, Bike Storage, Community Room, Fitness Center, Management
- Services included
- Cable TV, Common Areas, Maintenance Grounds, Security, Sewer, Water
Lease details
Not reported by the listing source.
Location
Area details
- City
- Key Biscayne
- County
- Miami-Dade
- ZIP code
- 33149
Manufactured home details
Not reported by the listing source.
Financial & listing details
Listing
- MLS number
- A11954185
- Possession
- Negotiable
- Original list price
- $18,900,000
- Parcel number
- 2452050491350
- Annual property tax
- $54,141
- Tax year
- 2025
- Tax legal description
- GRAND BAY RESIDENCES CONDO UNIT PH-1A UNDIV 1.7892% INT IN COMMON ELEMENTS OFF REC 17374-0773 OR 17905-3465 1297 1
Additional MLS details
Reported by the listing source
- Association Amenities
- Pool, Bike Storage, Community Room, Fitness Center, Management
- Association Fee Frequency
- Monthly
- Association Fee Includes
- Cable TV, Common Areas, Maintenance Grounds, Security, Sewer, Water
- Association
- Yes
- Bathrooms Total Decimal
- 5.5
- Bathrooms Total Integer
- 6
- Building Area Total
- 11260
- Construction Materials
- CBS
- County Or Parish
- Miami-Dade
- Days On Market
- 251
- Direction Faces
- East
- Elementary School
- Key Biscayne K-8
- High School
- Coral Gables
- List Price
- 18900000
- Listing Contract Date
- 2026-02-14
- Living Area
- 8435
- MLSArea Major
- 2520
- Middle Or Junior School
- Ponce De Leon
- Mls Status
- Active
- On Market Date
- 2026-02-14
- Photos Count
- 52
- Postal Code
- 33149
- Property Sub Type
- Condominium
- Property Type
- Residential
- Rooms Total
- 3
- Security Features
- Elevator Secure, Fire Alarm, Secured Garage/Parking, Security Guard, Smoke Detector(s)
- Senior Community
- Yes
- Standard Status
- Active
- State Or Province
- FL
- Status Change Timestamp
- 2026-02-14T05:00:00Z
- Stories Total
- 14
- Subdivision Name
- GRAND BAY RESIDENCES COND
- Waterfront Features
- Ocean Access, Deeded Beach Access, Ocean
- Tax Annual Amount
- 54141
- Bathrooms Full
- 5
- Bedrooms Total
- 5
- Bathrooms Half
- 1
- General Property Information: Senior Community
- Yes
- Financial Information: Estimated Monthly Assoc Recurring Fee
- 9923
Market value
Price history
| Date | Event | Price |
|---|---|---|
| Feb 14, 2026 | ListedMIAMI REALTORS® MLS | $18,900,000$2,241/sqft |
Public tax history
| Year | Property taxes | Assessment |
|---|---|---|
| 2025 | $54,141 | — |
Payment calculator
- Principal & interest
- $98,068
- Property taxes
- $4,512
- Insurance
- $9,450
- Association dues
- $9,923
Live national rate context is displayed below through Mortgage News Daily’s official widget. The calculator rate remains a separate assumption until licensed machine-readable access is connected. This is not a loan offer.
Neighborhood
Area
GRAND BAY RESIDENCES CONDKey Biscayne · Miami-Dade County · 33149
Climate risk
—No licensed climate-risk source is connected.
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