3 of 4For Sale at Grand Bay TowerBack to list
Unit 708
1 / 14
Grand Bay Tower Unit 708 For Sale
$3,490,000
430 Grand Bay Drive · Key Biscayne · Key Biscayne
Grand Bay Tower Unit 708, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 1 of 14Grand Bay Tower Unit 708, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 2 of 14Grand Bay Tower Unit 708, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 3 of 14Grand Bay Tower Unit 708, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 4 of 14Grand Bay Tower Unit 708, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 5 of 14Grand Bay Tower Unit 708, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 6 of 14Grand Bay Tower Unit 708, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 7 of 14Grand Bay Tower Unit 708, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 8 of 14Grand Bay Tower Unit 708, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 9 of 14Grand Bay Tower Unit 708, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 10 of 14Grand Bay Tower Unit 708, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 11 of 14Grand Bay Tower Unit 708, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 12 of 14Grand Bay Tower Unit 708, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 13 of 14Grand Bay Tower Unit 708, 430 Grand Bay Drive, Key Biscayne FL 33149, photo 14 of 14
3 of 4 For Sale at Grand Bay Tower · back to list
$3,490,000Asking Price
$1,229Per SqFt
3/3Beds/BathsBd/Ba
2,840SqFt · 263.8 m²
Grand Bay Tower · MLS A12057740 · 57 days on Zilbert · Listed Jul 22, 2026 · 430 Grand Bay Drive, Key Biscayne FL 33149Current layoutPhotos first

Property Details

Asking Price$3,490,000
Price per SqFt$1,229
Maintenance fee$3,200 Monthly
Property Taxes$24,825 2025
Interior Space2,840 SqFt
Beds/Baths3/3
Year Built1999
MLS #A12057740

Estimated Costs

An estimate of condo or HOA fees and property taxes

Monthly carry, before financing
$3,200maintenance · $3,200 per month
$2,069taxes · $24,825/yr ÷ 12
$5,269 / monthassociation + taxes, before mortgage and insurance

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

From the listing

Rare opportunity in one of Key Biscayne's most sought-after buildings. This corner residence offers sweeping views of Biscayne Bay and the Miami skyline, framed by 3 balconies throughout.The kitchen features top-of-the-line appliances, a center island and a sun-filled breakfast nook — a true chef's dream. Marble flooring flows through the expansive, open living and dining areas, ideal for entertaining, while rich dark wood grounds the bedrooms with warmth.3 full bedrooms, 2 full baths, plus a maid's quarters with full bath. Generous walk-in closets throughout. A private entrance sets the tone the moment you arrive — your own island getaway, move-in ready.

Listed by Coldwell Banker Realty

Sales History for This Unit · Grand Bay Tower Unit 708

Sale Sold Price Asking Price Beds/Baths SqFt Closed Date

What Other Units Have Been Selling For at Grand Bay Tower

1 other unit sold in the last 12 months at an average of $1,327/SqFt · This unit (708) is asking $1,229/SqFt

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
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

Directions

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 $1,229 ask