About This Home

This 5-bedroom, 6-bathroom condo at 445 Grand Bay Drive #Ph-1A in Key Biscayne, FL is listed for $18,900,000 ($2,241 per sqft). Built in 1997, the home offers 8,435 sqft of living space on a N/A lot.

Key Features

  • Built in 1997
  • Waterfront

Property Details

1 story
5 full, 1 half
#Ph-1A
1997

Amenities

WaterfrontViewHardwoodA/C
Listing 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.

Monthly Cost Estimate

$101,081/mo

20% down · 6.5% · 30 years

Principal$13,669
Interest$81,900
Insurance$5,513

Estimates only. Actual payments may vary.

Location

445 Grand Bay Drive #Ph-1A

Key Biscayne, FL 33149

GRAND BAY RESIDENCES COND

Features & Amenities

Interior Features

Wet BarBidetBuilt-in FeaturesBreakfast AreaBathtubCloset CabinetryDining AreaSeparate/Formal Dining RoomDual SinksEntrance FoyerEat-in KitchenHigh CeilingsMain Level PrimaryPantrySeparate ShowerWalk-In Closet(s)

Exterior Features

BalconySecurity/High Impact Doors

Property Details

Flooring

WoodHardwoodMarbleCarpet

Construction

Block

Views

Ocean

Parking

ValetOpenCovered

Heating

Electric (Heating)

Cooling

Electric

Appliances

Built-In OvenDryerDishwasherElectric RangeElectric Water HeaterDisposalIce MakerMicrowaveRefrigeratorWasher

Questions & Answers

This 5-bedroom, 6-bathroom condo at 445 Grand Bay Drive is listed at $18,900,000 ($2,241/sqft). The estimated monthly payment is $101,082 based on 20% down, a 30-year loan at 6.5% interest, estimated insurance.

Key features include: Built in 1997, Waterfront. Interior Features: Wet Bar, Bidet, Built-in Features. Exterior Features: Balcony, Security/High Impact Doors.

This property is listed by Brigitte Nachtigall and can be reached at 3057109664.

BN

Brigitte Nachtigall

License 0542022

Agent at One Sothebys International Realty

(305) 710-9664

Listed by One Sothebys International Realty · Broker phone: (305) 666-0562 · View on Broker Site

MLS# A11954185· Source: Miami REALTORS®· 224 days on PropertySimple

Copyright © 2026 Miami REALTORS®. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

445 Grand Bay Drive #Ph-1A, Key Biscayne, FL 33149

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