Dominating the Key Biscayne skyline, this Geoffrey Bradfield–designed penthouse is a rare display of power, prestige, and absolute luxury. Encompassing 13,630 sq. ft. with 10,421 sq. ft. under air and 3,000+ sq. ft. of oceanfront terraces, it commands 100 feet of unobstructed beachfront with sweeping sunrise and sunset views. Directly adjacent, the $100M+ newly reimagined Ritz-Carlton and its brand-new Beach Club sit at your footsteps, elevating exclusivity to a world-class level. Inside, soaring ceilings showcase a showpiece chef’s kitchen, grand dining, four-private en-suites, a refined executive office, staff quarters, and couture-caliber closets. Includes five premium parking spaces and five oversized private storage cages. A true trophy residence at the apex of coastal luxury.
Property Details
Price:
$26,000,000
MLS #:
A11915787
Status:
Active
Beds:
4
Baths:
5
Type:
Condo
Subtype:
Condominium
Subdivision:
GRAND BAY TOWER CONDO
Neighborhood:
grandbaytowercondo
Listed Date:
Nov 18, 2025
Finished Sq Ft:
9,600
Total Sq Ft:
9,600
Year Built:
1999
See this Listing
Schools
Elementary School:
Keybiscayne
Middle School:
Ponce De Leon
High School:
Coral Gables
Interior
Appliances
Dishwasher, Disposal, Dryer, Electric Water Heater, Microwave, Electric Range, Refrigerator, Wall Oven, Washer
Bathrooms
4 Full Bathrooms, 2 Half Bathrooms
Cooling
Electric
Flooring
Ceramic Floor
Heating
Electric
Laundry Features
Utility Room/Laundry
Exterior
Architectural Style
Corner Unit, High Rise, Penthouse
Association Amenities
Bike Storage, Community Room, Exercise Room, Pool
Construction Materials
CBS Construction
Exterior Features
Open Balcony
Parking Features
2 Or More Spaces, Guest, Valet, No Rv/Boats
Security Features
Fire Sprinklers, Fire Alarm, Smoke Detector, Complex Fenced, Elevator Secure, Secured Garage/Parking
Financial
HOA Frequency
Monthly
Tax Year
2024
Taxes
$153,827
Map
Community
- Address430 Grand Bay Dr Key Biscayne FL
- SubdivisionGRAND BAY TOWER CONDO
- CityKey Biscayne
- CountyMiami-Dade County
- Zip Code33149
Market Summary
Current real estate data for Condo in Key Biscayne as of Jan 17, 2026
128
Condo Listed
131
Avg DOM
1,059
Avg $ / SqFt
$2,180,683
Avg List Price
Property Summary
- Located in the GRAND BAY TOWER CONDO subdivision, 430 Grand Bay Dr Key Biscayne FL is a Condo for sale in Key Biscayne, FL, 33149. It is listed for $26,000,000 and features 4 beds, 5 baths, and has approximately 9,600 square feet of living space, and was originally constructed in 1999. The current price per square foot is $2,708. The average price per square foot for Condo listings in Key Biscayne is $1,059. The average listing price for Condo in Key Biscayne is $2,180,683.
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