Grand Bay Tower

430 Grand Bay Drive, Key Biscayne, FL 33149

See All Three Towers at Grand Bay Key Biscayne

2For Sale

$1,570Avg Asking $/SqFt

2Sold · 12 Months

$1,503Avg Sold $/SqFt · 12 Mo

Mark Zilbert is a Key Biscayne real estate agent who follows every listing and sale at Grand Bay Tower. Buyers and sellers can call or text Mark at (786) 280-0201.

Building Facts

Developer	GB/JT Hotel Partners
Architect	Cohen Freedman Encinosa
Year Built	1999
Units	100
Unit sizes	2,470 – 9,600 SqFt

About Grand Bay Tower

Grand Bay Tower rises 14 stories at 430 Grand Bay Drive on Key Biscayne, 100 condo residences completed in 1999. GB/JT Hotel Partners built it to plans by Cohen Freedman Encinosa, and it has no plan under 2,470 SqFt. Three-bedroom residences fill most floors, 87 of them, with 11 four-bedroom and two five-bedroom condos, and a penthouse of 9,600 SqFt crowns the building. Residents are neighbors of the Ritz-Carlton, with its spa, clay courts and oceanfront grounds next door.

By Mark Zilbert, Global Real Estate Advisor · updated October 2026

Asking prices by bedrooms: 2 beds from $6.9M · 4 beds from $3.9M

Ask Mark

Mark Zilbert

Global Real Estate Advisor

ONE Sotheby's International Realty

Your contact for Grand Bay Tower

+1 (786) 280-0201

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For Sale

2 units · avg asking $1,570/SqFt

Unit ⇅		Price ⇅		$/SqFt ⇅	Beds/Baths ⇅	SqFt ⇅	Listed ⇅
6064 bed · 2,930 SqFt		$3,900,000$1,331/SqFt		$1,331	4/4	2,930	9/21/269/21
8012 bed · 3,950 SqFt		$6,900,000$1,747/SqFt		$1,747	2/3½	3,950	3/18/263/18

Pending Sales

Under contract, awaiting closing. The freshest signal of where prices are settling. In the MLS: For sale is Active or Active with Contract; these are Pending. The price shown is the asking price. The closed price appears in Sold when it records.

Unit ⇅	Price ⇅		$/SqFt ⇅	Beds/Baths ⇅	SqFt ⇅	Pending ⇅	DOM ⇅
7083 bed · 2,840 SqFt	$3,490,000$1,229/SqFt		$1,229	3/3	2,840	10/21/2610/21	—
3073 bed · 2,840 SqFt	$3,400,000$1,197/SqFt		$1,197	3/4	2,840	9/25/269/25	—

2 residences under contract

Sold · Last 12 Months

2 closed sales · avg $1,503/SqFt · avg 96% of last asking price

Unit ⇅	Sold Price ⇅	% of Ask ⇅	$/SqFt ⇅	Beds/Baths ⇅	SqFt ⇅	Closed ⇅
11033 bed · 3,630 SqFt	$6,150,000list $6,850,000	90%	$1,694	3/3½	3,630	10/30/2610/30
9023 bed · 3,950 SqFt	$5,240,000list $5,100,000	103%	$1,327	3/5½	3,950	4/20/264/20

% of ask compares the closed price to the final list price. The building's full sold history, 58 sales, lives on the archive view.

All 58 recorded sales at Grand Bay Tower

Let me know when a unit lists at Grand Bay Tower

We will e-mail you each time there is something new.

Location

430 Grand Bay Drive · Key Biscayne

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