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+20

430 Grand Bay Dr PH-1AN

Key Biscayne, FL, 33149

Active

$26,000,000

430 Grand Bay Dr PH-1AN

Key Biscayne, FL, 33149

Active

$26,000,000

4

Bedrooms

6

Bathrooms

9,600 sqft

Living Area

1999

Year Built

Mortgage Calculator

Estimate your monthly payment for this waterfront property

Loan Term

Down Payment

20%

$5,200,000 down

Interest Rate

%

Principal & Interest$134,908/mo

Property Tax (est. ~1.2%, varies by county)$26,000/mo

Home Insurance (est.)$250/mo

Total Monthly Payment$161,158

Loan Amount: $20,800,000Rate: 6.75%

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Comparable Sales

$26,000,000Tour the dockSchedule a Showing

200

Days on Market

Dock & Water AccessMLS

Ocean AccessOcean Front

Data sources: SFWMD AHED waterway polygons · FHWA National Bridge Inventory 2024 · Not provided by the MLS or listing broker.

Description

Dominating the Key Biscayne skyline, this Geoffrey Bradfield–designed penthouse is a rare display of power, prestige, and absolute luxury. Encompassing 13,630 sq. ft. with 10,421 sq. ft. under air and 3,000+ sq. ft. of oceanfront terraces, it commands 100 feet of unobstructed beachfront with sweeping sunrise and sunset views. Directly adjacent, the $100M+ newly reimagined Ritz-Carlton and its brand-new Beach Club sit at your footsteps, elevating exclusivity to a world-class level. Inside, soaring ceilings showcase a showpiece chef’s kitchen, grand dining, four-private en-suites, a refined executive office, staff quarters, and couture-caliber closets. Includes five premium parking spaces and five oversized private storage cages. A true trophy residence at the apex of coastal luxury.

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Location

Key Biscayne, FL, 33149

No price history available for this property.

Listing courtesy of The Corcoran Group

Last updated: 6/23/2026

© 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.

FEMA Flood Zone AE

BFE: 8ft

Special Flood Hazard Area

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Nearby Schools

Assigned Public Schools

E

Key Biscayne K-8 Center

Grades PK-8 · Key Biscayne

M

Ponce de Leon MS

Grades 6-8 · Coral Gables

H

Coral Gables Senior High

Grades 9-12 · Coral Gables

Nearby Private Schools

St Christophers - By-The-Sea Montessori School0.5 mi

St Agnes Academy0.6 mi

School data from Miami-Dade County Open Data Hub. Verify attendance zones with the school district.