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7 Beds
9 Baths
4,565 sqft

$7,450,000

425 Harbor, Key Biscayne FL, 33149

Price per sqft$1,631.98
Built in2020
Property size4,565 sqft
Property typeResidential
Courtesy of Mark Chatburn with One Sotheby's International Realty

Overview

Active

Listed Jun 12, 2026

Updated Sep 18

Discover this striking contemporary residence, perfectly positioned on an oversized 9,258 SF lot on Harbor Drive, one of Key Biscayne’s most elegant and prestigious streets. Built in 2020, this architectural masterpiece offers 6 bedrooms plus a private office, 7 full baths, and 2 powder rooms across 4,565 SF of beautifully designed living space. Filled with natural light, the home showcases expansive open living areas, impressive volume throughout, and a sleek custom kitchen featuring bespoke cabinetry and top-of-the-line finishes. An elevator provides seamless access to all three levels, culminating in a spectacular rooftop terrace with captivating island views and refreshing bay breezes…a unique advantage of being just moments from the water. Designed for effortless indoor-outdoor living, the exterior features a resort-style saltwater pool and spa, summer kitchen, cabana bath, and generous entertaining areas surrounded by lush tropical landscaping. Additional highlights include , EV charger, and ample driveway parking. Combining exceptional design, comfort, and functionality, this residence embodies the very best of island living in one of Key Biscayne’s most distinguished locations. Just minutes from Miami, Key Biscayne is a hidden island paradise where pristine beaches, world-class outdoor recreation, and a relaxed yet sophisticated lifestyle come together in a way that few places can match.

$49,565/mo

Est. mortgage payment based on a $7,450,000 home price.

All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.

Additional information

MLS® ID
A12034564

Interior Features

Bedrooms
7
Bathrooms
9
Cooling
Yes
Heating
Yes
Basement
No

Exterior Features

Lot Size
0.21 Acres

Other Property Details

Taxes
$89,673
Tax Frequency
Annually
View
Yes
Pool
Yes
55+/Senior Community
No
MLS provider logo

Courtesy of One Sotheby's International Realty, Mark Chatburn,
Listing Contact: 305-393-6032 

Based on information from Martin County REALTORS of the Treasure Coast, Inc. (RAMC) as of 9/18/2026. This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. Display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals. Information from sources other than the Listing Agent may have been included in the MLS data. Unless otherwise specified in writing, Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent.

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Data last updated 4:44 AM UTC, 9/18/2026

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