1 / 25
25 photos
+20
430 Grand Bay Dr 801
Key Biscayne, FL, 33149
Active$6,900,000
430 Grand Bay Dr 801
Key Biscayne, FL, 33149
Active$6,900,000
2
Bedrooms
4
Bathrooms
3,950 sqft
Living Area
1999
Year Built
Key Biscayne, FL, 33149
Active$6,900,000
Key Biscayne, FL, 33149
Active$6,900,000
2
Bedrooms
4
Bathrooms
3,950 sqft
Living Area
1999
Year Built
$4,398
HOA / Monthly
77
Days on Market
Data sources: SFWMD AHED waterway polygons · FHWA National Bridge Inventory 2024 · Not provided by the MLS or listing broker.
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.
See the property and tour the dock. A licensed waterfront specialist will arrange your private showing.
Select a date
Key Biscayne, FL, 33149
Listing courtesy of Coldwell Banker Realty
Last updated: 6/16/2026
© 2026 Miami Association of REALTORS®, Inc. All rights reserved. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of the Miami Association of REALTORS®. Information is deemed reliable but not guaranteed. All properties are subject to prior sale, change, or withdrawal.
IDX information is provided exclusively for consumers' personal, non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
Estimate your monthly payment for this waterfront property
$1,380,000 down
Estimated payments only. Actual rates and terms may vary.
$5.3M5959 Collins Ave 1503
Miami Beach, FL
Listed by Related General Realty, LLC.
$6.0M1250 Ocean Dr PH1
Miami Beach, FL
Listed by The Keyes Company - Miramar
$8M1300 Monad Ter 11E
Miami Beach, FL
Listed by Compass Florida, LLC
$7.2M9705 Collins Ave 903N
Bal Harbour, FL
Listed by Yaffe International Realty
$7.5M15701 Collins Ave 2005
Sunny Isles Beach, FL
Listed by Coldwell Banker Realty
$7.5M1000 Biscayne Blvd 2402
Miami, FL
Listed by Grand Lion Real Estate Group LLC
Assigned Public Schools
Key Biscayne K-8 Center
Grades PK-8 · Key Biscayne
Ponce de Leon MS
Grades 6-8 · Coral Gables
Coral Gables Senior High
Grades 9-12 · Coral Gables
Nearby Private Schools
School data from Miami-Dade County Open Data Hub. Verify attendance zones with the school district.