Estate Condo
$8,950,000
350 E Ocean Dr # 301N, Key Biscayne FL 33149 – Residential
Ocean Dr
- 4 beds
- 6.5 baths
- 3,798 sqft
5
Beds
5.5
Baths
8,435
SQUARE FEET
Condominium
Type
1997
Built
Listing courtesy of
One Sotheby's International Realty
Brigitte Nachtigall
MLS® #A11954185
Listing information last updated May 4, 2026
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Overview
This condo in Key Biscayne has 5 bedrooms and 5.5 bathrooms across 8,435 square feet, and is listed for sale at $18,900,000 (about $2,241 per square foot). Built in 1997.
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 history
Listed for sale
Feb 14, 2026 · MIAMI MLS
$18,900,000
Days on market
as of today
157 days
Building & financials
FROM MIAMI MLSThe carrying-cost and structural facts that close or kill a Miami deal — straight from the listing feed.
Annual property tax (2025)
$54,141
Association type
Condo
Waterfront
Ocean Access, Ocean Front
Pets
Allowed (verify restrictions)
FEMA flood zone
AE
HOA dues include
Cable TvCommon AreaLandscaping/Lawn MaintenanceManagerSecuritySewerWater
Dues, taxes, and association data per MIAMI MLS and public records; flood zone from FEMA NFHL. Verify with the HOA, county, and your insurer during due diligence.
Building report · MCR exclusiveGrand Bay — recertification, reserves, units & pricing
Property details
MLS #A11954185
Price$18,900,000
Size8,435 Square Feet
Bedrooms5
Bathrooms5.5
Year built1997
TypeCondominium
StatusFor Sale
Price / Square Feet$2,241
Flood zoneAE
Features & amenities
Built-in Features
Closet Cabinetry
Den/Library/Office
Dishwasher
Disposal
Dryer
Electric Range
Electric Water Heater
Entrance Foyer
Family Room
Great Room
Has a View
Has Cooling System
Has Heating System
Has Waterfront
Home Owners Association
Ice Maker
Microwave
Open Balcony
Pantry
Property Attached
Refrigerator
Senior Community
Volume Ceilings
Walk-In Closet(s)
Wall Oven
Washer
Wet Bar
Location
445 Grand Bay Drive # 1A, Key Biscayne FL 33149
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List your rental →Listing data © MIAMI MLS · IDX information deemed reliable but not guaranteed · 157 days on market.
We do not advertise a “free” buyer’s agent; buyer-representation compensation is disclosed in writing. Bitcoin pricing is indicative and updates with the market — not financial, tax, or legal advice. Buyer to independently verify all measurements, assessments, and flood & insurance facts.