5 Harbor Pt
Key Biscayne, FL, 33149
$26,000,000
3 Beds
5 Baths
10,926 SqFt
0 Acres
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MLS #A11921513 image #0
A once-in-a-generation opportunity on Key Biscayne’s only private waterfront road, this extraordinary estate spans 28,800 square feet with 120 feet of pristine water frontage, a secluded sandy beach, and a private dock framing panoramic views of the Miami skyline. Offering 10,926 square feet of living space, the property delivers exceptional privacy alongside a striking contemporary design recognized as part of the esteemed Rosa de la Cruz Collection. Soaring 20-foot ceilings, sculptural architectural lines, and expansive, light-filled interiors create a dramatic backdrop for art, entertaining, or a visionary reimagining tailored to your lifestyle. A truly rare canvas in an irreplaceable location, with architectural plans available to transform it into the most exceptional residence in Key Biscayne.

Property Details

Price:
$26,000,000
MLS #:
A11921513
Status:
Active Under Contract
Beds:
3
Baths:
5
Type:
Single Family
Subtype:
Single Family Residence
Subdivision:
MATHESON ESTATES
Neighborhood:
mathesonestates
Listed Date:
Nov 26, 2025
Finished Sq Ft:
10,926
Total Sq Ft:
10,926
Year Built:
1954
WaterfrontOceanfrontMatheson EstatesMathesonestatesMatheson EstatesKeybiscaynePonce De LeonCoral GablesOk To LeaseRestrictions Or Possible Restrictions

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Schools

Elementary School:
Keybiscayne
Middle School:
Ponce De Leon
High School:
Coral Gables

Interior

Appliances
Dishwasher, Disposal, Dryer, Electric Water Heater, Electric Range, Refrigerator, Washer
Bathrooms
4 Full Bathrooms, 2 Half Bathrooms
Cooling
Central Air, Electric
Flooring
Ceramic Floor, Marble
Heating
Central, Electric
Interior Features
First Floor Entry, Built-in Features, Entrance Foyer, Vaulted Ceiling(s), Volume Ceilings, Den/Library/Office, Maid/In-Law Quarters

Exterior

Architectural Style
Attached, Two Story
Community Features
None
Construction Materials
CBS Construction
Covered Spaces
1
Direction Faces
Southwest
Exterior Features
Open Balcony, Room For Pool
Lot Features
1/2 To Less Than 3/4 Acre Lot
Open Parking YN
1
Parking Features
Circular Driveway, Driveway, Paver Block, No Rv/Boats, No Trucks/Trailers
Patio And Porch Features
Open Balcony
Roof
Barrel Roof, Flat Roof With Facade Front
Security Features
Smoke Detector
View
Bay, Garden
Waterfront Features
WF/Ocean Access, No Fixed Bridges, Ocean Front
Window Features
Partial Impact Glass, Partial Panel Shutters/Awnings, Partial RollDown Shutters, Electric Shutters, Hurricane Shutters, Bay Window(s), High Impact Windows

Financial

Tax Year
2024
Taxes
$59,191

Map

Community

Subdivisions in Key Biscayne

Market Summary

Current real estate data for Single Family in Key Biscayne as of Apr 22, 2026
58
Single Family Listed
170
Avg DOM
2,146
Avg $ / SqFt
$9,019,517
Avg List Price

Property Summary

    Located in the MATHESON ESTATES subdivision, 5 Harbor Pt Key Biscayne FL is a Single Family for sale in Key Biscayne, FL, 33149. It is listed for $26,000,000 and features 3 beds, 5 baths, and has approximately 10,926 square feet of living space, and was originally constructed in 1954. The current price per square foot is $2,380. The average price per square foot for Single Family listings in Key Biscayne is $2,146. The average listing price for Single Family in Key Biscayne is $9,019,517. To schedule a showing of MLS#a11921513 at 5 Harbor Pt in Key Biscayne, FL, contact your Julien Drieu agent at 7862380927.

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