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425 Harbor Dr, 
Key Biscayne, FL 33149

$7,450,000


7

Beds


9

Baths


4,565

Sq Ft


Single Family


Virtual Tour

Active

Listed by

Mark Chatburn

Brigitte Nachtigall

One Sotheby'S International Realty

305-365-2811

Last updated:

July 22, 2026, 09:59 AM

MLS#

A12034564

Source:

SEFMLS

About This Home

425 Harbor Dr

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.

Home Facts

Single Family

9 Baths

7 Bedrooms

Built in 2020

Price Summary

7,450,000

$1,631 per Sq. Ft.

MLS #:

A12034564

Last Updated:

July 22, 2026, 09:59 AM


Rooms & Interior

Bedrooms

Total Bedrooms:

7

Bathrooms

Total Bathrooms:

9

Full Bathrooms:

7

Interior

Living Area:

4,565 Sq. Ft.


Structure

Structure

Building Area:

6,092 Sq. Ft.

Year Built:

2020


Lot

Lot Size (Sq. Ft):

9,258


Finances & Disclosures

Finances

Price:

$7,450,000

Price per Sq. Ft:

$1,631 per Sq. Ft.

Source:SEFMLS
Information deemed reliable but not guaranteed. Information is provided, in part, by Greater Miami MLS. This information being provided is for consumer's personal, non-commercial use and may not be used for any other purpose other than to identify prospective properties consumers may be interested in purchasing.

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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.