1 of 4For Sale at Grand Bay TowerBack to list
Unit 801
1 / 28
Grand Bay Tower Unit 801 For Sale
$6,900,000
430 Grand Bay Drive · Key Biscayne · Key Biscayne
Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 1 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 2 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 3 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 4 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 5 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 6 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 7 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 8 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 9 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 10 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 11 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 12 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 13 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 14 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 15 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 16 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 17 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 18 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 19 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 20 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 21 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 22 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 23 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 24 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 25 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 26 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 27 of 28Grand Bay Tower Unit 801, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 28 of 28
1 of 4 For Sale at Grand Bay Tower · back to list
$6,900,000Asking Price
$1,747Per SqFt
2/3½Beds/BathsBd/Ba
3,950SqFt · 367.0 m²
Grand Bay Tower · MLS A11973615 · 183 days on Zilbert · Listed Mar 18, 2026 · 430 Grand Bay Drive, Key Biscayne FL 33149Current layoutPhotos first

Property Details

Asking Price$6,900,000
Price per SqFt$1,747
Maintenance fee$4,398 Monthly
Property Taxes$131,192 2025
Interior Space3,950 SqFt
Beds/Baths2/3½
Year Built1999
MLS #A11973615

Estimated Costs

An estimate of condo or HOA fees and property taxes

Monthly carry, before financing
$4,398maintenance · $4,398 per month
$10,933taxes · $131,192/yr ÷ 12
$15,331 / monthassociation + taxes, before mortgage and insurance

Fees and taxes based on MLS provided figures, and may not be accurate

From the listing

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.

Listed by Coldwell Banker Realty

Sales History for This Unit · Grand Bay Tower Unit 801

Sales history is unavailable for this property

What Other Units Have Been Selling For at Grand Bay Tower

No comparable sales on record.

Mark Zilbert
Mark Zilbert
Licensed Real Estate Broker · I track every sale at Grand Bay Tower. Ask me about this residence, the line, or the building.
+1 (786) 280-0201

Listed by Coldwell Banker Realty. Mark Zilbert of ONE Sotheby's International Realty is a cooperating (transaction) broker and helps buyers find properties in Key Biscayne and throughout South Florida.

Location

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The curated data and calculated data for this property and its surrounding condo units and homes is based solely on data we have extracted from the MLS. There may be unpublished, private, quit claim and other property offerings and transfers that do not appear here, which may affect how a buyer or seller perceives property values. Always conduct proper due diligence when considering buying or selling property.

More at Grand Bay Tower

100 units · 4 for sale · 1 sold in the last 12 months · building avg $1,327/SqFt sold, against this unit's $1,747 ask