GRAND BAY RESIDENCES COND,GRAND BAY

445 Grand Bay Drive # 1A, Key Biscayne FL 33149

5 beds · 5.5 baths · 8,435 ft²

For Sale · Active Listing

$18,900,000

Est. Payment $100,594/mo

MLS Sheet

5

Bedrooms

5.5

Bathrooms

8,435

Sq. Ft.

1997

Year Built

14

Stories

79

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
79 days
Listed
Feb 14, 2026
Last Updated
May 4, 2026
Price/Lot Sq.Ft.

Comparable homes

Same ZIP, similar price + bedrooms.

Market insights for Key Biscayne

Live MLS-derived activity. Forecast is a conservative rule-of-thumb estimate — not a guarantee.

Sellers market

May 2026

100/100
Buyers marketSellers market

53

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).

2/14/2026Listed 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

445 Grand Bay Drive # 1A, Key Biscayne FL 33149Directions

GreatSchools Summary Ratings

Public + private K-12 schools within 5 miles of this listing.

GreatSchoolsData provided by GreatSchools.org © 2026. All rights reserved.

Estimated Monthly Payment

$116,494/mo

Principal & Interest

$100,594

Property Tax

$15,750

Insurance

$150

HOA

$0

20% ($3,780,000)
7.00%
30 years
1.00% (FL avg ~1.0%)
$0/mo
$150/mo

Estimates only. Actual payment depends on credit, lender, insurance carrier, and FL/Miami-Dade specifics. Contact Rangely for a precise quote.

Rangely Adames

Rangely Adames

Sales Associate | Sunland Group

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