$18,900,000
445 Grand Bay Drive # 1A
Key Biscayne, FL, 33149
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.
Property Details
Price:
$18,900,000
MLS #:
A11954185
Status:
Active
Beds:
5
Baths:
5.5
Type:
Condo
Subtype:
Condominium
Subdivision:
GRAND BAY RESIDENCES COND,GRAND BAY
Neighborhood:
grandbayresidencescond
Listed Date:
Feb 14, 2026
Finished Sq Ft:
8,435
Total Sq Ft:
11,260
Year Built:
1997
Schools
Elementary School:
Keybiscayne
Interior
Appliances
Dishwasher, Disposal, Dryer, Electric Water Heater, Ice Maker, Microwave, Electric Range, Refrigerator, Wall Oven, Washer
Bathrooms
5 Full Bathrooms, 1 Half Bathroom
Cooling
Electric
Flooring
Carpet, Marble, Wood
Heating
Electric
Interior Features
Built-in Features, Closet Cabinetry, Entrance Foyer, Pantry, Volume Ceilings, Walk-In Closet(s), Wet Bar, Den/Library/Office, Family Room, Great Room
Levels
1
Exterior
Architectural Style
Corner Unit, High Rise, Penthouse
Association Amenities
Bike Storage, Community Room, Exercise Room, Pool
Community
55+
Construction Materials
CBS Construction
Direction Faces
East
Exterior Features
Open Balcony
Parking Features
2 Or More Spaces, Covered, Valet, No Rv/Boats, No Trucks/Trailers
Patio And Porch Features
Open Balcony
Security Features
Fire Alarm, Smoke Detector, Elevator Secure, Secured Garage/Parking, Guard At Site
Senior Community YN
1
View
Bay, Ocean View, Direct Ocean
Waterfront Features
Ocean Access, Ocean Front
Window Features
Blinds, Drapes
Financial
HOA Fee Frequency
Monthly
Maintenance Fee
$9,923
Tax Year
2025
Taxes
$54,141
Mortgage Calculator
Map
Current real estate data for Condo in Key Biscayne as of Jun 09, 2026
139
Condo Listed
104
Avg DOM
1,175
Avg $ / SqFt
$2,737,589
Avg List Price
Community
- Address445 Grand Bay Drive # 1A Key Biscayne FL
- SubdivisionGRAND BAY RESIDENCES COND,GRAND BAY
- CityKey Biscayne
- CountyMiami-Dade County
- Zip Code33149
Subdivisions in Key Biscayne
- 155 SUNRISE CONDO
- 32 54 42 & 5 55 42,TORPICAL HOMES
- 325 FERNWOOD ROAD CONDO
- 544-548 FERNWOOD CONDO
- BAHAMA HOUSE CONDO,Bahama House
- BAHAMA HOUSE SOUTH CONDO,KEY CASSA
- BISCAYNE KEY ESTATES
- BLUE PELICAN CONDO
- CAPE FLA SUB SEC 2
- CAPE FLORIDA CLIB CONDO P
- CAPE FLORIDA CLUB CONDO
- CAPE FLORIDA CLUB CONDO P
- CAPE FLORIDA CLUB CONDO P,Cape Florida Club
- CAPE FLORIDA SUB SEC 1
- CAPE FLORIDA SUB SEC 3
- CAPE FLORIDA SUB SEC 3,Village Estate
- CASA DEL MAR
- CASA DEL MAR CONDO
- CAY POLYNESIA CONDO
- CLUB TOWER ONE CONDO
- CLUB TOWER ONE CONDO,Ocean Club
- CLUB TOWER THREE CONDO
- CLUB TOWER TWO CONDO
- CLUB TOWER TWO CONDO,Ocean Club
- COMMODORE CLUB SOUTH COND
- COMMODORE CLUB SOUTH COND,COMMODORE CLUB SOUTH
- COMMODORE CLUB SOUTH CONDO
- COMMODORE CLUB WEST CONDO
- COMMODORE CLUB WEST CONDO,COMMODORE CLUB
- COMMODORE CLUB WEST CONDO,COMMODORE CLUB WEST
- Crandon Tower Condo
- EMERALDBAY, KEY COLONY 3
- Fernwood Homes Condo
- G B RESORT CONDO HOTEL
- G B VILLAS
- GALEN 250 CONDO
- GALEN BREAKERS CONDO
- GALEN DRIVE CONDO APTS
- GALEN DRIVE WEST CONDOMIN
- GDNS OF KEY BISC-ALHAMBRA
- GOVERNORS LODGE ASSOC CON
- GRAND BAY RESIDENCES COND
- GRAND BAY RESIDENCES COND,GRAND BAY
- GRAND BAY TOWER CONDO
- GRAND BAY TOWER CONDO,GRAND BAY TOWER COND
- GRAPETREE TOWNHOUSE CONDO
- HOLIDAY COLONY
- HURRICANE COVE
- INDIES CONDO
- ISLAND BREAKERS CONDO
- ISLAND BREAKERS CONDO,ISLAND BREAKERS COND
- ISLAND HOUSE
- ISLAND HOUSE APT INC – CO
- ISLAND HOUSE APT INC – CO,Island House Apt Inc
- KEY BISC AMBASSADOR CONDO
- KEY BISC AMBASSADOR CONDO,KEY BISC AMBASSADOR
- KEY BISCAYNE COMMODORE CL
- KEY BISCAYNE COMMODORE CL,COMMODORE CLUB ONE
- KEY BISCAYNE COMMODORE CL,Commodore East
- KEY BISCAYNE COMMODORE CL,KEY BISCAYNE COMMODO
- KEY BISCAYNE ONE HUNDRED
- KEY BISCAYNE VI CONDO
- KEY BISCAYNES COMMODORE C
- KEY COLONY NO 1
- KEY COLONY NO 1,KEY COLONOY 1
- KEY COLONY NO 1,KEY COLONY
- KEY COLONY NO 2 CONDO
- KEY COLONY NO 2 CONDO,KEY COLONY NO 2 COND
- KEY COLONY NO 4 CONDO
- KEY COLONY NO 4 CONDO,KEY COLONY NO 4 COND
- KEY COLONY TIDEMARK
- KEY COLONY,THE EMERALD BAY
- KEY ISLANDER CONDO
- KEY ISLANDER CONDO,Key Islander Condo
- Key Islander Condominium,Key Islander Condomi
- KEY TOWNHOUSE CONDO
- LAKE TOWER CONDO
- LAKE TOWER CONDO,Lake Tower
- LAKE VILLA ONE CONDO
- LAKE VILLA ONE CONDO,The Ocean Club
- LAKE VILLA THREE CONDO
- Lake Villa Three Condo,Lake Villa Three Con
- LAKE VILLA TWO CONDO
- LAKE VILLA TWO CONDO,The Ocean Club
- Le Phare Condo,Le phare
- LE PHARE KEY BISCAYNE CON
- Mar Azul,Mar Azul Condo
- MAR-AZUL CONDO
- MAR-AZUL CONDO,Mar Azul
- MAR-AZUL CONDO,Mar Azul Condo
- MASHTA ISLAND
- MASHTA ISLAND A REPLAT OF
- MASHTA POINT SUB
- MATHESON ESTATES
- MATHESON ESTATES,MATHESON STATES
- OCEAN DRIVE MANORS INC CO
- OCEAN DRIVE MANORS INC CO,OCEAN DRIVE MANORS I
- OCEAN LANE PLAZA CONDO
- OCEAN TOWER ONE CONDO
- OCEAN TOWER TWO
- OCEAN TOWER TWO CONDO
- OCEAN TOWER TWO CONDO,Ocean Club
- OCEAN TOWER TWO CONDO,THE OCEAN CLUB
- OCEAN VILLAGE CONDO
- OCEAN VILLAGE CONDO,OCEAN VILLAGE
- OCEANA KEY BISCAYNE CONDO
- OCEANA KEY BISCAYNE CONDO,OCEANA KEY BISCAYNE
- RESORT VILLA ONE CONDO
- RESORT VILLA ONE CONDO,RESORT VILLA ONE CON
- RESORT VILLA TWO CONDO
- RESORT VILLA TWO CONDO,Resort Villa
- RESORT VILLA TWO CONDO,The Ocean Club
- SANDS OF KEY BISCAYNE
- SANDS OF KEY BISCAYNE CON
- SANDS OF KEY BISCAYNE CON,The Sands
- SMUGGLERS COVE
- SOLIMAR CONDO OF KEY BISC
- SOLIMAR CONDO OF KEY BISC,SOLIMAR CONDO
- SUNRISE CLUB CONDO
- SUNRISE CLUB CONDO,100 SUNRISE
- SUNRISE MANOR CONDO
- THE EMERALD BAY
- THE EMERALDBAY @ KEY COLO
- THE EMERALDBAY @ KEY COLO,Emerald Bay
- THE EMERALDBAY @ KEY COLO,KEY COLONY
- THE EMERALDBAY @ KEY COLO,THE EMERALD BAY
- THE EMERALDBAY @ KEY COLO,THE EMERALDBAY @ KEY
- THE EMERALDBAY @ KEY COLON
- THE EMERALDBAY KEY COLONY
- The Ocean Club
- THE PALMS OF KEY BISCAYNE
- THE PYRAMIDS @ KEY BISCAY
- TOWERS OF KEY BISCAYNE CO
- TOWERS OF KEY BISCAYNE CO,The Towers of Key Bi
- TOWERS OF KEY BISCAYNE CO,TOWERS OF KEY BISCAY
- TOWERS OF KEY BISCAYNE CON
- TROPICAL ISLE HOMES 4TH. A,tROPICAL iSLE hOMES
- TROPICAL ISLE HOMES RESUB
- TROPICAL ISLE HOMES SUB
- TROPICAL ISLE HOMES SUB 1
- TROPICAL ISLE HOMES SUB 1,TROPICAL ISLE HOMES
- TROPICAL ISLE HOMES SUB 2N
- TROPICAL ISLE HOMES SUB 3
- TROPICAL ISLE HOMES SUB 3,TROPCIAL ISLES HOMES
- TROPICAL ISLE HOMES SUB 3,TROPICAL ISLE HOMES
- TROPICAL ISLE HOMES SUB 4
- TROPICAL ISLE HOMES SUB 4,KEY COLONY
- TROPICAL ISLE HOMES SUB,TROPICAL ISLE HOMES
- TROPICAL ISLES HOMES,TROPICAL ISLE HOMES
- VILLAHARBOUR APTS CONDO
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Property Summary
- Located in the GRAND BAY RESIDENCES COND,GRAND BAY subdivision, 445 Grand Bay Drive # 1A Key Biscayne FL is a Condo for sale in Key Biscayne, FL, 33149. It is listed for $18,900,000 and features 5 beds, 6 baths, and has approximately 8,435 square feet of living space, and was originally constructed in 1997. The current price per square foot is $2,241. The average price per square foot for Condo listings in Key Biscayne is $1,175. The average listing price for Condo in Key Biscayne is $2,737,589.

445 Grand Bay Drive # 1A
Key Biscayne, FL




















































