Map

For SaleCondominiumActive

445 Grand Bay Drive Ph-1a

Key Biscayne, FL 33149

$18,900,000

272 Days On Site

  • 5Beds
  • 6Baths5 full, 1 half
  • 8,435Sq Ft
  • $2,241Per Sq Ft
  • 1997Built
Subdivision
Grand Bay Residences Cond
County
Miami-Dade
MLS®
A11954185

Overview

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 Snapshot

Price
$18,900,000
Days On Site
272 Days
Bedrooms
5
Inside Area (SqFt)
8,435 sqft
Total Baths
6
Full Baths
5
Partial Baths
1
Lot Size
N/A
Year Built
1997
MLS® Number
A11954185
Status
Active
Property Tax
$54,141 (2025)
HOA/Condo/Coop Fees
N/A
Sq Ft Source
N/A

Property Details

General Features

11 items
Direction Faces
East
Disclosures
Flood Plain Disclosure
Levels
One
Number Of Stories
14
Parking
Covered, Valet, Garage Door Opener
Pets
Yes
Property Sub Type
Condominium
Security
Secured Garage/Parking, Security Guard, Smoke Detector(s)
SqFt Total
11,260
Style
HighRise, Penthouse
Utilities
Cable Available

Interior Features

8 items
Appliances
Dryer, Dishwasher, Electric Range, Electric Water Heater, Disposal, Ice Maker, Microwave, Refrigerator, Washer, Oven
Cooling
Electric
Electric
Fuses
Flooring
Carpet, Hardwood, Marble, Wood
Furnished
Unfurnished
Heating
Electric
Interior
Wet Bar, Bidet, Built-in Features, Entrance Foyer, Eat-in Kitchen, High Ceilings, Pantry, Walk-In Closet(s)
Window Features
Blinds, Drapes

Exterior Features

9 items
Construction Details
Block
Exterior
Balcony
Lot Features
Waterfront
Pool Features
Association
View
Bay, Ocean
Waterfront
Yes
Waterfront Features
Ocean Access, Ocean Front
Waterview
Bay, Ocean
Windows/Doors
Blinds, Drapes

Community Features

6 items
Association Amenities
Clubhouse, Fitness Center, Pool, Management
Association Fee Frequency
Monthly
MLS Area
52
Senior Community
Yes
Financing Terms Available
Cash, Conventional
Building Access
14

Location

445 Grand Bay Drive Ph-1a, Key Biscayne, FL 33149 · 52

Neighborhood & Commute

ZIP Code 33149

Median household income
$152,895
Income per person
$72,459
Households
5,812
Average household size
2.75
Median age
41.6

Source: Walk Score.

Disclosure: Community information and market data powered by Constellation Data Labs. Information is deemed reliable but not guaranteed.

Schools

Elementary School
Keybiscayne

Price & Status History

  1. Listing updated with changes from the MLS®
  2. Listing first seen on site
  3. Status changed to Active
  4. Price changed to $18,900,000

Friends & Family

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Listing courtesy of One Sotheby's International Realty (305) 710-9664

Stellar MLS

Listing information is provided by Participants of the Stellar MLS. IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed. Properties displayed may be listed or sold by various participants in the MLS Copyright 2026, Stellar MLS.

Last checked: 2026-11-14 01:05 AM EST

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