GRAND BAY RESIDENCES COND,GRAND BAY
445 Grand Bay Drive # 1A, Key Biscayne FL 33149
5 beds · 5.5 baths · 8,435 ft²
$18,900,000
Est. Payment $100,594/mo
5
Bedrooms
5.5
Bathrooms
8,435
Sq. Ft.
1997
Year Built
14
Stories
112
Days on Market
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.
Facts
- MLS#
- A11954185
- Subdivision
- GRAND BAY RESIDENCES COND,GRAND BAY
- Property Type
- Residential
- Property Sub Type
- Condominium
- Year Built
- 1997
- Lot Size
- 0 sqft
- Sq. Ft.
- 8,435 ft²
- Sq. Mt.
- 784 m²
- Price per sq. ft.
- $2,241/ft²
- Price per sq. mt.
- $24,107/m²
- Stories
- 14
- Garage
- —
- Pool
- —
- Days on Market
- 112 days
- Listed
- Feb 14, 2026
- Last Updated
- May 4, 2026
- Price/Lot Sq.Ft.
- —
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Market insights for Key Biscayne
Live MLS-derived activity. Forecast is a conservative rule-of-thumb estimate — not a guarantee.
Sellers market
July 2026
52
Median days to sold
+4.5%
1-year price forecast (est.)
Price & tax history
From the live MIAMI MLS feed. Older history requires the ListingHistory resource (not yet enabled).
| 2/14/2026 | Listed for sale | $18,900,000 |
History reflects fields present on the live MLS record. Full multi-year history requires the MIAMI ListingHistory resource (not yet enabled).
Location
GreatSchools Summary Ratings
Public + private K-12 schools within 5 miles of this listing.
Indian River AcademyPK,KG,1,2,3,4,5 · public · 1.8 mi
Osceola Magnet SchoolKG,1,2,3,4,5 · public · 2.1 mi
Lakewood Park Elementary SchoolPK,KG,1,2,3,4,5 · public · 2.1 mi
Touched By Grace Academy4,5,6,7,8,9,10,11,12 · private · 2.4 mi
Treasure Coast MontessoriPK,KG · private · 2.9 mi
Oslo Middle School6,7,8 · public · 3.0 mi
Tabernacle Baptist Christian SchoolKG,1,3,4,5,6,7,8 · private · 3.7 mi
Tabernacle Christian SchoolKG,1,2,3,4,5,6,7,8 · private · 3.7 mi
Citrus Elementary SchoolKG,1,2,3,4,5 · public · 4.1 mi
Glendale Christian SchoolPK,KG,1,2,3,4,5,6,7,8 · private · 4.4 mi
Estimated Monthly Payment
$116,494/mo
Principal & Interest
$100,594
Property Tax
$15,750
Insurance
$150
HOA
$0
Estimates only. Actual payment depends on credit, lender, insurance carrier, and FL/Miami-Dade specifics. Contact Rangely for a precise quote.
The data relating to real estate for sale on this website comes in part from the Southeast Florida Multiple Listing Service. MLS Data is deemed reliable, but is not guaranteed accurate by MIAMI REALTORS®.
Accuracy of listing information is not guaranteed. Listing information is provided for personal consumer, non-commercial use, solely to identify potential properties for potential purchase. All other use is strictly prohibited and may be a violation of federal and state law.
Copyright Southeast Florida MLS a/k/a SEFMLS © 2026.
Updated within 24 hours
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