Grand Bay Tower
Grand Bay Tower is a 14-story condominium in Key Biscayne, built in 1999, with 100 residences.
Building details coming soon.
Income
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Age Distribution (%)
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Ownership (%)
Education (age 25+)
Educational Attainment (%)
Commute to Work
How Residents Commute (%)
Population
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Key Biscayne, FL 33149
Available Residences at Grand Bay Tower
4 Bedroom Condos · 1 unit
| Unit | Asking Price | Bed(s)/Bath(s) | Living Size | Price/Sq.Ft. | Days on Market |
|---|---|---|---|---|---|
| — | $26,000,000 | 4 / 6 / 2 | 9,600 | $2,708 | 200 |
3 Bedroom Condos · 3 units
| Unit | Asking Price | Bed(s)/Bath(s) | Living Size | Price/Sq.Ft. | Days on Market |
|---|---|---|---|---|---|
| 1103 | $6,850,000 | 3 / 4 / 1 | 3,630 | $1,887 | 14 |
| 505 | $4,017,400 | 3 / 4 / 1 | 2,930 | $1,371 | 26 |
| 307 | $3,400,000 | 3 / 4 | 2,840 | $1,197 | 95 |
2 Bedroom Condos · 1 unit
| Unit | Asking Price | Bed(s)/Bath(s) | Living Size | Price/Sq.Ft. | Days on Market |
|---|---|---|---|---|---|
| 801 | $6,900,000 | 2 / 4 / 1 | 3,950 | $1,747 | 77 |
Compare every Key Biscayne building, its inventory, and area market trends in one place.
ANALYTICS
CURRENT INVENTORY
INVENTORY BY BEDROOM
- 2 Bed (1) 20%
- 3 Bed (3) 60%
- 4 Bed (1) 20%
INVENTORY TREND (ALL UNITS)
Market & Community Report
As of June 28, 2026, Grand Bay Tower carries 5 active listings at an average asking price of $9.4M, with an average time on market of 82 days. Closed sales over the preceding 36 months averaged $1,245 per sq ft, and 1 transaction closed in the past 12 months — implying 60 months of supply against the current pace of absorption.
Zip code 33149 (Key Biscayne) is home to 14,628 residents with a median age of 43.2. Per-capita income stands at $106,219; 77.1% hold a bachelor's degree or higher. 69.4% of units are owner-occupied; 34.6% of residents work from home.
Data current as of June 28, 2026. Market metrics derived from MLS closed sales; community data from U.S. Census ACS.
Frequently Asked Questions — Grand Bay Tower
How many condos are for sale at Grand Bay Tower?
As of June 28, 2026, 5 residences are actively listed for sale at Grand Bay Tower ranging from $3.4M to $26M.
What is the average price per square foot at Grand Bay Tower?
Based on closed sales over the preceding 36 months, the average sale price at Grand Bay Tower is $1,245 per sq ft (MLS closed sales).
Where is Grand Bay Tower located?
Grand Bay Tower is located at 430 Grand Bay Dr, Key Biscayne, FL, 33149.
What year was Grand Bay Tower built?
Grand Bay Tower was completed in 1999.