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$18,900,000
445 Grand Bay Drive PH-1A
Key Biscayne, FL 33149
MLS# A11954185
5 beds  |  6 baths  |  11260 sqft


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Property 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.

Details
Maps
Contract Information
Comp Sale YN: No
Occupant Type: Vacant
Listing Date: 2026-02-14
Status: Active
Original List Price: 18900000
List Price: $18,900,000
Current Price: $18,900,000
Location and Legal
County Or Parish: Miami-Dade
County Parish Name: Miami-Dade
City Name: Key Biscayne
Municipal Code: 24
Postal Zip: 33149
Development Name: GRAND BAY
Subdivision Number: 49
Special Assessment YN: No
Flood Zone: AE
Building Name: 445
Country: United States
Street Number: 445
Street Name: Grand Bay
Street Suffix: Drive
Unit Number: PH-1A
State Or Province: FL
Postal Code: 33149
Postal Code +4: 1905
Subdivision Name: GRAND BAY RESIDENCES COND
Area: 2520
Elementary School: Key Biscayne K-8
Middle Or Junior School: Ponce De Leon
High School: Coral Gables
Parcel Number: 2452050491350
General Property Information
Total Units In Building: 138
Unit Floor #: 14
Living Area Main: 8435
Senior Community YN: Yes
Outdoor Living Spaces YN: Yes
Furnished: Unfurnished
Stories Total: 14
Stories: 1
Property Sub Type: Condominium
Bedrooms Total: 5
Bathrooms Total: 6
Bathrooms Full: 5
Bathrooms Half: 1
Building Area Main: 11260
Year Built: 1997
Waterfront YN: 1
Direction Faces: East
Financial Information
Application Required YN: Yes
Estimated Monthly Assoc Recurring Fee: 9923
Membership Fee Required YN: No
Association YN: 1
Association Fee: 9923
Association Fee Frequency: Monthly
Tax Annual Amount: 54141
Tax Year: 2025
Tax 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
Office/Member Information
DXORIGMLSID: SEF
Application Fee Details
Application Fee Required: Yes
Application Fee: 150
Application Information
1-2 Weeks Approval: 1
Association Approval Required: 1
Amenities
Bike Storage: 1
Community Room: 1
Fitness Center: 1
Management: 1
Pool: 1
Association Fee Includes
Cable TV: 1
Common Areas: 1
Maintenance Grounds: 1
Security: 1
Sewer: 1
Water: 1
Dining Area
Breakfast Area: 1
Eat-In Kitchen: 1
Formal Dining: 1
Electric
Fuses: 1
Flooring
Carpet: 1
Marble: 1
Wood: 1
Leasing Permitted Details
Leasing Permitted YN: Yes
Okay To Lease: 1
Parking Features
Covered: 1
Garage Door Opener: 1
Valet: 1
Parking Information
Open Parking Spaces: 2
Parking Space Number: 3
Property Condition
Resale: 1
Possession
Negotiable: 1
Special Information
Flood Zone: 1
Sold As-Is: 1
Utilities
Cable Available: 1
Heating
Electric: 1
Leasing Restrictions
Leasing - Max Times Per Year: 2
Leasing - Minimum Number of Days: 180
Unit Description
Corner/End Unit: 1
Penthouse: 1
High Rise: 1
Water Access
Deeded Beach Access: 1
Ocean Access: 1
Water View
Bay: 1
Direct Ocean: 1
Ocean: 1
Window Features
Blinds: 1
Drapes: 1
Rods: 1
Appliances
Dishwasher: 1
Disposal: 1
Dryer: 1
Electric Range: 1
Ice Maker: 1
Microwave: 1
Oven: 1
Refrigerator: 1
Washer: 1
Construction Materials
CBS: 1
Interior Features
Built-in Features: 1
Closet Cabinetry: 1
Entrance Foyer: 1
High Ceilings: 1
Pantry: 1
Walk-In Closet(s): 1
Wet Bar: 1
Land Lease Information
Land Lease Amount: 0
Listing Terms
Cash: 1
Conventional: 1
Security Features
Elevator Secure: 1
Fire Alarm: 1
Secured Garage/Parking: 1
Security Guard: 1
Smoke Detector(s): 1
Waterfront Features
Ocean Front: 1
Water Heater Details
Electric Water Heater: 1
Recreation Lease Information
Recreation Lease Amount: 0
Cooling
Electric: 1
Association Type
Condominium: 1
Showing Requirements
Call Listing Agent: 1
Master Bedroom/Bath
Bidet: 1
Dual Sinks: 1
Master Bdrm - Ground: 1
Separate Shower: 1
Separate Tub: 1
Pets Allowed YN
Yes: 1
Pets Allowed
Pet Restrictions Possible: 1
Restrictions
Parking - No RV: 1
Parking - No Trailer: 1
Parking - No Truck: 1
Storm Protection
Impact Glass: Partial
Outdoor Living Spaces
Balcony: 1
Balcony Details
Balcony - Open: 1
Room Types
Den: 1
Family Room: 1
Great Room: 1
Price Calculations
Current Price To SqFt: 2240.66
Section Details
Parcel Number MLX: 1350
Status Change Information
Major Change Timestamp: 2026-02-14T05:00:00Z
Major Change Type: New Listing
Status Change Date: 2026-02-14
Originating Details
Originating System Key: 426001073
Originating System ID: M00000151
Property Features
Application Information: 1-2 Weeks Approval; Association Approval Required
Association Fee Includes: Cable TV; Common Areas; Maintenance Grounds; Security; Sewer; Water
Dining Area: Breakfast Area; Eat-In Kitchen; Formal Dining
Electric: Fuses
Flooring: Carpet; Marble; Wood
Leasing Permitted Details: Okay To Lease
Parking Features: Covered; Garage Door Opener; Valet
Property Condition: Resale
Appliances: Dishwasher; Disposal; Dryer; Electric Range; Ice Maker; Microwave; Oven; Refrigerator; Washer
Water Heater Details: Electric Water Heater
Construction Materials: CBS
Association Type: Condominium
Heating: Electric
Interior Features: Built-in Features; Closet Cabinetry; Entrance Foyer; High Ceilings; Pantry; Walk-In Closet(s); Wet Bar
Listing Terms: Cash; Conventional
Pets Allowed YN: Yes
Pets Allowed: Pet Restrictions Possible
Possession: Negotiable
Restrictions: Parking - No RV; Parking - No Trailer; Parking - No Truck
Security Features: Elevator Secure; Fire Alarm; Secured Garage/Parking; Security Guard; Smoke Detector(s)
Special Information: Flood Zone; Sold As-Is
Unit Description: Corner/End Unit; Penthouse; High Rise
Utilities: Cable Available
Water Access: Deeded Beach Access; Ocean Access
Water View: Bay; Direct Ocean; Ocean
Waterfront Features: Ocean Front
Window Features: Blinds; Drapes; Rods
Showing Requirements: Call Listing Agent
Outdoor Living Spaces: Balcony
Balcony Details: Balcony - Open
Room Types: Den; Family Room; Great Room
Room Information
Room Name
Den
Family Room
Great Room

IDX
Listing Office: One Sotheby's International Realty

Last Updated: August - 13 - 2026

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