445 Grand Bay Drive PH-1A Key Biscayne, FL $ 18,900,000
445 Grand Bay Drive PH-1A
$ 18,900,000
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445 Grand Bay Drive PH-1A

Key Biscayne, FL, 33149
$ 18,900,000
Bedrooms5 Baths5.1 Sq 8,435

Monthly Estimate*

$ 116,371

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Condo for sale in Key Biscayne, FL

for $18,900,000 with 5 bedrooms and 5 full baths, 1 half bath. This 8,435 square foot condo was built in 1997.

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.

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Condo Active

Price

$ 18,900,000

Bedrooms

5

Full Bath

5

Half Bath

1

Property Type

Condo

Taxes

$ 54,141

Style

Year Built

1997

Town/City

Key Biscayne

County/Region

Miami-Dade

MLS | Web ID

A11954185

Features
General
Heating Electric
Cooling Electric
Utilities Cable Available
Possession Closing & Funding
Appliances Built-In Oven Dryer Dishwasher Electric Range Electric Water Heater Disposal Ice Maker Microwave Refrigerator Washer
HOA Fee 0
Garage Spaces 0
Association Fee Includes Association Management Common Areas Cable TV Maintenance Grounds Sewer Security Water
Patio/Porch Features Balcony Open
Architectural Style High Rise Penthouse
Pool Features Association
Security Features Elevator Secured Secured Garage/Parking Security Guard Smoke Detector(s)
Restrictions NoBoats No RV No Truck OK To Lease
Construction Materials Block
Pets Allowed Conditional Yes
Year Built 1997
Electric Fuses
View Bay Ocean
Stories Count 1
Levels One
Unit Number PH-1A
Property Subtype Condominium
Tax Year 2025
Waterfront Features Ocean Access Ocean Front
HOA Fee 2 0
Assoc Fee Paid Per Monthly
County Miami-Dade
Property Type Residential
Association Amenities Bike Storage Clubhouse Fitness Center Pool
Subdivision Name GRAND BAY RESIDENCES COND
Facing Direction East
Garage Y/N false
Total Rooms 0
Full Baths 5
Special Listing Conditions Listed As-Is
Status Active
City Key Biscayne
Disclosures Flood Plain Disclosure
Land Lease Amount 0
Entry Location 14
Senior Community Y/N true
MLS Area 52
Lot Size Units Square Feet
Carport Spaces 0
Carport Y/N false
Listing Terms Cash Conventional
Elementary School Keybiscayne
Property Attached Y/N true
Year Built Details Resale
Tax Annual Amount 54141
Lease Considered Y/N false
Standard Status Active
Occupancy Type Vacant
Property Sub Type Additional Condominium
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
HOA Fee 3 9923
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Interior
Interior Amenities Wet Bar Bidet Built-in Features Breakfast Area 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 Closet(s)
Flooring Carpet Hardwood Marble Wood
Furnished Y/N Unfurnished
Total Stories 14
Air Conditioning Y/N true
Heating Y/N true
Window Features Blinds Drapes
Half Baths 1
Total Bedrooms 5
Entry Level 14
Total Baths 6
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Exterior
Exterior Amenities Balcony Security/High Impact Doors
Parking Features Covered Two or More Spaces Valet Garage Door Opener
Building Area Total 11260
Waterfront Y/N true
Covered Spaces 0
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* Excluded Features
List By
One Sotheby's International Realty

Broker

Brigitte@bnachtigall.com

Email

Affordability Calculator

$120,882
Per Month
96%
4%
0%
Monthly Principal & Interest
$116,371
Monthly Property Taxes
$4,512
Monthly Home Insurance
--
Default based on a 30-year fixed rate of 6.25% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
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Nearby
292624 Elementary School
4827337 Middle School
Unknown High School High School
Pricing History
DatePricePrice ChangeDescription
2/14/2026$18,900,000 Listed Price

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445 Grand Bay Drive PH-1A, Key Biscayne, FL, 33149 is a Condo for sale at $18,900,000 with 8,435 sqft. 445 Grand Bay Drive PH-1A has 5 bedrooms, 5.1 baths, and was built in 1997. The property's zip code is 33149 which is in Key Biscayne, FL