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Street View
$18,900,000
Monthly Est:$94,072
5 Beds
- 6 Baths
5 full baths + 1 half bath
8,435sqft
445 Grand Bay Dr #PH-1A, Key Biscayne, FL 33149
$18,900,000
$94,072/moEst:
Get Pre-Approved
Condominium
Built in 1997
$-- HOA
-- sqft lot
$2,241/sq.ft
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.
- Houzeo last checked: 5 minutes ago
- Listing updated: August 13, 2026 at 3:44 pm
- Listing Provided by: Brigitte Nachtigall (305) 710-9664 DRE #0542022, Jorge Boj (305) 803-6956 DRE #3016066 | One Sotheby's International Realty (305) 365-2811
- Source: Miami MLS-FL | MLS#: A11954185

Part of
Property Details
Status
Active
Type
Condominium
No. of Stories
14
County
City
Neighborhood
--
Year Built
1997
HOA Fees
-
Finished Area
8,435 sqft
Lot Size
-- sqft lot
Basement Area
- sqft
MLS Name
Miami MLS
MLS Number
A11954185
MLS Status
Active
Days on Market
236
Cumulative Days on Market
180

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Facts & Features
Rooms
Bedrooms & bathrooms
Bedrooms: 5
Bathrooms: 6
Interior
Flooring
Carpet, Hardwood, Marble, Wood
Exterior Features
Balcony, Security High Impact Doors
Cooling
Electric
Window Features
Blinds, Drapes
Heating
Electric
Appliances
Built In Oven, Dryer, Dishwasher, Electric Range, Electric Water Heater, Disposal, Ice Maker, Microwave, Refrigerator, Washer
Interior Features
Wet Bar, Bidet, Built In Features, Breakfast Area, Bathtub, Closet Cabinetry, Dining Area, Separate Formal Dining Room, Dual Sinks, Entrance Foyer, Eat In Kitchen, High Ceilings, Main Level Primary, Pantry, Separate Shower, Walk In Closets
Construction
Year Built
Year Built: 1997
Home type
Condominium
Construction Materials
Block
Architectural Style
High Rise, Penthouse
Utilities & Energy
Parking Features
Covered, Two Or More Spaces, Valet, Garage Door Opener
Security Features
Elevator Secured, Secured Garage Parking, Security Guard, Smoke Detectors
Association Amenities
Bike Storage, Clubhouse, Fitness Center, Pool
Pool Features
Association
Electric
Fuses
Utilities
Cable Available
Other Features
Disclosures
Flood Plain Disclosure
Subdivision Name
Grand Bay Residences Cond
Patio And Porch Features
Balcony, Open
Price History
| Date | Event | Price |
|---|---|---|
02/14/2026 Source: #A11954185 | Off Market | $18,900,000 $2,241/sqft |
02/14/2026 Source: | Listed for Sale | $18,900,000 +66.15% $2,241/sqft |
03/09/2022 Source: | Price Decreased | $11,375,000 -17.99% $1,349/sqft |
10/05/2021 Source: | Sold | $13,870,000 $1,644/sqft |
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Based on information from the Southeast Florida Multiple Listing Service (SEFMLS) or from MIAMI Association of REALTORS® through Oct 09, 2026, 11:15AM. The MLS Data is deemed reliable, but is not guaranteed accurate by MIAMI REALTORS®. Accuracy of listing information is not guaranteed. Listing information is provided for personal consumer, non-commercial use, solely to identify potential properties for potential purchase. All other use is strictly prohibited and may be a violation of federal and state law. Copyright Southeast Florida MLS a/k/a SEFMLS © 2026. All rights reserved.
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