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New listingMLS listing sourceMIAMI REALTORS® MLS
New listingMLS® A12113410
$12,990,000

445 Grand Bay Drive PH-2A, Key Biscayne, FL 33149

Beds
4
Baths
6
Sqft
7,400
Est. payment$87,911/mo
Home type
Condominium
Year built
1996
Lot size
—
Price / sqft
$1,755
HOA
$9,343/mo
Community
GRAND BAY RESIDENCES COND

Property description

Experience oceanfront living at its finest in this extraordinary floor-through penthouse at Grand Bay Residences, one of Key Biscayne’s most prestigious luxury addresses. Encompassing an impressive 7,400 square feet under A/C, this exceptional residence offers breathtaking panoramic views of the Atlantic Ocean, Biscayne Bay, and the Miami skyline. Two magnificent, oversized terraces facing east and west create an unparalleled indoor-outdoor living experience, where spectacular sunrises over the ocean and unforgettable sunsets over the bay become part of everyday life. Beautifully upgraded and designed for both grand entertaining and comfortable living, the residence features expansive living areas, an elegant formal dining room, gourmet kitchen, and private home theater. The magnificent primary suite is a true private sanctuary, featuring a generous walk-in closet and two separate, beautifully appointed bathrooms, offering the ultimate in comfort, privacy, and luxury. Three additional spacious bedrooms, each with its own en-suite bathroom, provide exceptional comfort and privacy. Residents enjoy an extraordinary resort-style lifestyle with direct beach and ocean access, concierge and valet services, a state-of-the-art fitness center, a spectacular swimming pool, and the impeccable service of Grand Bay’s dedicated professional staff. A rare opportunity to own a truly remarkable penthouse where space, sophistication and breathtaking views capture the best of this island.

Listing activity

Days on market
0
Listed
Nov 2, 2026
MLS listing updated
10 hours ago
Feed last checked
4 minutes ago

Listed by Brigitte Nachtigall · One Sotheby's International Realty

Map

Map location is based on MLS-supplied coordinates. Verify the location before relying on it.

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms
4
Bathrooms
6
Bathrooms (decimal)
5.5
Full bathrooms
5
Half bathrooms
1

Rooms & features

Rooms
2
Interior features
Built-in Features, Closet Cabinetry, Entrance Foyer, Pantry, Walk-In Closet(s)
Flooring
Ceramic Tile, Marble
Appliances
Electric Water Heater, Dishwasher, Disposal, Dryer, Electric Range, Ice Maker, Microwave, Oven, Refrigerator, Washer
Furnished
Unfurnished
Window features
Blinds

Heating & cooling

Heating
Electric
Cooling
Electric
Property

Parking

Garage spaces
0
Carport spaces
0
Covered spaces
0
Parking features
Covered, Valet
Attached garage
No

Exterior

Stories
14
Building area
7,400 sqft
Exterior features
Balcony
View
Ocean, Direct Ocean, Bay
Waterfront
Ocean Access, Deeded Beach Access, Ocean
Waterfront property
Yes

Lot

Road frontage
East of US-1
Construction

Type & style

Home type
Condominium
Year built
1996
New construction
No

Materials

Construction
CBS
Property condition
Resale
Faces
East
Utilities & green energy

Utilities

Utilities
Cable Available
Community & HOA

Community

Subdivision
GRAND BAY RESIDENCES COND
MLS area
2520
Security
Elevator Secure, Fire Alarm, Fire Sprinkler System, Secured Garage/Parking, Security System, Smoke Detector(s)
Pets allowed
Yes
55+ community
Yes

Association

Has association
Yes
Association fee
$9,343 monthly
Estimated monthly dues
$9,343
Amenities
Maintenance, Pool, Bike Storage, Community Room, Fitness Center, Management, Trash Chute
Services included
Pool Service, Common Areas, Maintenance Grounds, Maintenance Structure, Security, Sewer, Trash, Water
Lease details

Not reported by the listing source.

Location

Area details

City
Key Biscayne
County
Miami-Dade
ZIP code
33149
Manufactured home details

Not reported by the listing source.

Financial & listing details

Listing

MLS number
A12113410
Possession
Negotiable
Original list price
$12,990,000
Parcel number
2452050491300
Annual property tax
$56,046
Tax year
2025
Tax legal description
GRAND BAY RESIDENCES CONDO UNIT PH-2A UNDIV 1.6846% INT IN COMMON ELEMENTS OFF REC 17374-0773 OR 17923-1515 1297 1
Additional MLS details

Reported by the listing source

Association Amenities
Maintenance, Pool, Bike Storage, Community Room, Fitness Center, Management, Trash Chute
Association Fee Frequency
Monthly
Association Fee Includes
Pool Service, Common Areas, Maintenance Grounds, Maintenance Structure, Security, Sewer, Trash, Water
Association
Yes
Bathrooms Total Decimal
5.5
Bathrooms Total Integer
6
Building Area Total
7400
Construction Materials
CBS
County Or Parish
Miami-Dade
Days On Market
0
Direction Faces
East
Elementary School
Key Biscayne K-8
High School
Coral Gables
List Price
12990000
Listing Contract Date
2026-11-02
Living Area
7400
MLSArea Major
2520
Middle Or Junior School
Ponce De Leon
Mls Status
Active
On Market Date
2026-11-01
Photos Count
54
Postal Code
33149
Property Sub Type
Condominium
Property Type
Residential
Road Frontage Type
East of US-1
Rooms Total
2
Security Features
Elevator Secure, Fire Alarm, Fire Sprinkler System, Secured Garage/Parking, Security System, Smoke Detector(s)
Senior Community
Yes
Standard Status
Active
State Or Province
FL
Status Change Timestamp
2026-11-02T05:00:00Z
Stories Total
14
Subdivision Name
GRAND BAY RESIDENCES COND
Waterfront Features
Ocean Access, Deeded Beach Access, Ocean
Tax Annual Amount
56046
Bathrooms Full
5
Bedrooms Total
4
Bathrooms Half
1
General Property Information: Senior Community
Yes
Financial Information: Estimated Monthly Assoc Recurring Fee
9343

Market value

Automated estimate—No licensed valuation source connected
Estimated sales range—Ask Karim for a local market analysis
Estimated rent—No licensed rental valuation source connected

Price history

DateEventPrice
Nov 2, 2026ListedMIAMI REALTORS® MLS$12,990,000$1,755/sqft

Public tax history

YearProperty taxesAssessment
2025$56,046—

Payment calculator

Estimated monthly payment$87,911/moIllustrative estimate, not a loan offer.
Principal & interest
$67,402
Property taxes
$4,671
Insurance
$6,495
Association dues
$9,343

Live national rate context is displayed below through Mortgage News Daily’s official widget. The calculator rate remains a separate assumption until licensed machine-readable access is connected. This is not a loan offer.

Neighborhood

Area

GRAND BAY RESIDENCES COND

Key Biscayne · Miami-Dade County · 33149

Climate risk

—

No licensed climate-risk source is connected.

Nearby schools

Key Biscayne K-8Elementary
—
Ponce De LeonMiddle
—
Coral GablesHigh
—
School names and districts are MLS-reported when available. Verify attendance boundaries with the school district. Ratings require a licensed ratings provider.

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Similar homes

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MLS listing source

MIAMI REALTORS® MLS · Listing courtesy of One Sotheby's International Realty. All listings featuring the BMLS logo are provided by BeachesMLS, Inc. This information is not verified for authenticity or accuracy and is not guaranteed. Copyright ©2026 BeachesMLS, Inc. IDX information is provided exclusively for consumers’ personal, non-commercial use and may be used only to identify prospective properties they may be interested in purchasing or leasing. Terms of use · Equal Housing Opportunity.