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Unit 1103
Sold by ONE Sotheby's International Realty
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Grand Bay Tower Unit 1103 Sold

$6,150,000
430 Grand Bay Drive · Key Biscayne
Grand Bay Tower Unit 1103 Sold
$6,150,000
430 Grand Bay Drive · Key Biscayne
MLS A12034186
Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 1 of 15Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 2 of 15Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 3 of 15Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 4 of 15Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 5 of 15Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 6 of 15Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 7 of 15Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 8 of 15Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 9 of 15Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 10 of 15Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 11 of 15Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 12 of 15Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 13 of 15Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 14 of 15Grand Bay Tower Unit 1103, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 15 of 15
$6,150,000Sold Price
$1,694Per SqFt
3/3½Beds/BathsBd/Ba
3,630SqFt · 337.2 m²
Grand Bay Tower · MLS A12034186 · 144 days on Zilbert · Listed Jun 12, 2026 · 430 Grand Bay Drive, Key Biscayne FL 33149

Property Details

Sold Price$6,150,000
Last Asking Price$6,850,000
Price per SqFt$1,694
Maintenance Fee$4,084 Monthly
Property Taxes$58,450 2026
Interior Space3,630 SqFt
Beds/Baths3/3½
Year Built1999
Closed Date10/30/2026
MLS #A12034186

Location

Directions

From the listing

A truly exceptional opportunity at Grand Bay Tower. This extraordinary residence showcases one of the building’s most unique and highly sought-after floor plans (03 line), a rare offering that combines elegance, comfort, and breathtaking views in perfect harmony. Perched on the 11th floor, the residence enjoys spectacular panoramic vistas of the Atlantic Ocean, Biscayne Bay, and the Miami skyline. Two expansive terraces invite you to experience both sunrise and sunset, while enjoying refreshing ocean breezes and seamless indoor-outdoor living. Impeccably maintained and flooded with natural light, this sophisticated home offers 3 spacious en-suite bedrooms, a powder room, and a spectacular den that serves as a private retreat and truly elevates the living experience. Thoughtfully designed throughout, the residence exudes warmth, character, and a sense of comfort rarely found in condominium living.Located just steps from the beach and within walking distance of restaurants, cafés, and shops, this exceptional residence offers the perfect blend of luxury, sophistication, and convenience. More than just an apartment, it is a place with soul…a true home in one of Key Biscayne’s most desirable addresses.

Listed by One Sotheby's International Realty

What It Costs to Own

Monthly, before a mortgage and insurance

Maintenance$4,084
Property taxes$4,871
Per month$8,955

Maintenance $4,084 a month; taxes $58,450 for 2026. MLS figures, which may not be accurate.

Sales History for This Unit · Grand Bay Tower Unit 1103

Sales history is unavailable for this property

What Other Units Have Been Selling For at Grand Bay Tower

2 units sold at Grand Bay Tower in the last 12 months at an average of $1,503/SqFt (this sale among them)

Below, the most recent sales most like this unit: units with the same bedroom count.

Unit ⇅Sold Price ⇅% of Ask ⇅Beds/Baths ⇅SqFt ⇅$/SqFt ⇅Closed Date ⇅

For a full analysis of past sales in this development, contact Mark Zilbert.

Mark Zilbert, Global Real Estate Advisor
Mark Zilbert
Global Real Estate Advisor · ONE Sotheby's International Realty · I track every sale at Grand Bay Tower. Ask me about this residence, the line, or the building.

Listed by One Sotheby's International 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.

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

At Grand Bay Tower, 4 of 100 units are for sale and 2 sold in the last 12 months at an average of $1,503 per SqFt. Unit 1103 sold at $1,694 per SqFt, above the building's average at the time. Figures compiled by Mark Zilbert, a Key Biscayne real estate agent with ONE Sotheby's International Realty, from MLS records.

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