GRAND BAY TOWER CONDO

430 Grand Bay Dr # 801, Key Biscayne FL 33149

2 beds · 3.5 baths · 3,950 ft²

For Sale · Active Listing

$6,900,000

Est. Payment $36,725/mo

MLS Sheet Video

2

Bedrooms

3.5

Bathrooms

3,950

Sq. Ft.

1999

Year Built

2

Garage

13

Stories

77

Days on Market

Description

Commanding breathtaking Atlantic vistas from its privileged eighth-floor setting at Grand Bay Tower, this residence is a rare offering on Key Biscayne. Enjoying an unusually private setting with unobstructed ocean views and minimal visibility from neighboring residences, the home offers a level of seclusion seldom found in oceanfront condominium living. Originally a three-bedroom, five-and-a-half-bath home, it has been masterfully reimagined into a grand two-bedroom, three-and-a-half-bath layout, enhancing scale and flow for refined entertaining and effortless daily living. Spanning approximately 3,950 square feet, the living and dining areas, a cozy family room, and a bright kitchen with breakfast area are complemented by three terraces totaling approximately 595 square feet, seamlessly integrated to capture sweeping Atlantic views from every room. Custom woodwork by renowned designer Juan Montoya enriches the interiors, while the serene primary suite offers a secluded sitting room, bespoke closets, and a spa-inspired bath, creating a private sanctuary within this singular home. The sale includes a private guest quarters—an increasingly rare and coveted amenity at Grand Bay—as well as two storage units. Combining exceptional scale, refined finishes, remarkable privacy, unobstructed Atlantic views, and desirable ancillary spaces, this residence represents a unique opportunity within one of Key Biscayne’s most prestigious oceanfront buildings.

Facts

MLS#
A11973615
Subdivision
GRAND BAY TOWER CONDO
Property Type
Residential
Property Sub Type
Condominium
Year Built
1999
Lot Size
0 sqft
Sq. Ft.
3,950 ft²
Sq. Mt.
367 m²
Price per sq. ft.
$1,747/ft²
Price per sq. mt.
$18,801/m²
Stories
13
Garage
2 spaces
Pool
Days on Market
77 days
Listed
Mar 18, 2026
Last Updated
Jun 16, 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

July 2026

100/100
Buyers marketSellers market

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).

3/18/2026Listed for sale$6,900,000

History reflects fields present on the live MLS record. Full multi-year history requires the MIAMI ListingHistory resource (not yet enabled).

Location

430 Grand Bay Dr # 801, 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

$42,625/mo

Principal & Interest

$36,725

Property Tax

$5,750

Insurance

$150

HOA

$0

20% ($1,380,000)
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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