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5 Harbor Pt, Key Biscayne, FL 33149

$26,000,000
  • 5 Harbor Pt, Key Biscayne, FL 33149 Main Photo

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Active With Contract
BEDS3 BATHS4 full 2 partial SQUARE FEET10,926 MLS#A11921513
STATUSActive With Contract PROPERTY TYPEResidential - Single Family SUBDIVISIONMATHESON ESTATES

Property Description

A once-in-a-generation opportunity on Key Biscaynes 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.

5 Harbor Pt | MLS# A11921513

This single family home located at 5 Harbor Pt, Key Biscayne, FL 33149 is currently listed for sale with an asking price of $26,000,000. This property was built in 1954 and has 3 bedrooms and 4 full and 2 partial baths with 10926 sq. ft. Harbor Pt is located in the MATHESON ESTATES subdivision. Search MATHESON ESTATES real estate on janzen.adamscameron.com today.

Property Features

Property Type: Residential - Single Family
Cooling: Central Air, Electric
Heating: Central, Electric
Home Style: Attached, Two Story
Lot Size: 0.66 Acres
Roof Type: Barrel Roof, Flat Roof With Facade Front
Taxes: $59,191
Year Built: 1954

Amenities

First Floor Entry
Built-in Features
Entrance Foyer
Vaulted Ceiling(s)
Volume Ceilings
Den/Library/Office
Maid/In-Law Quarters
Open Balcony
Room For Pool

Feature Descriptions

Appliances: Dishwasher, Disposal, Dryer, Electric Water Heater, Electric Range, Refrigerator, Washer
Community Features: None
Crops Included Y/N: No
Days on Site: 144
Door Features: High Impact Doors
Exterior: CBS Construction
Flooring: Ceramic Floor, Marble
Home Warranty Y/N: No
Lease Considered Y/N: No
Listing Terms: All Cash, Conventional
Lot: 1/2 To Less Than 3/4 Acre Lot
Parcel#: 24-42-32-002-0250
Parking: Circular Driveway, Driveway, Paver Block, No Rv/Boats, No Trucks/Trailers
Parking Notes: Circular Driveway, Driveway, Paver Block, No Rv/Boats
Patio/Porch: Open Balcony
Pets Allowed: Restrictions Or Possible Restrictions
Property Attached Y/N: No
Property Sub-Type: Single Family Residence
Security: Smoke Detector
Sewer: Public Sewer
Special View Info: Bay, Garden
Swimming Pool: Yes
Water: Municipal Water
Water Features: WF/Ocean Access, No Fixed Bridges, Ocean Front
Window: Partial Impact Glass, Partial Panel Shutters/Awnings, Partial RollDown Shutters, Electric Shutters, Hurricane Shutters, Bay Window(s), High Impact Windows

Local Schools

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

Listed By / Shown By

Listed By

Agency Name: BHHS EWM Realty
Agency Phone: 305-361-5600

Shown By

Agent Name: Stan & Diana Janzen
Agent Phone: (386) 295-7988
Agency Title: Adams Cameron & Co. REALTORS

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Estimated Payment

$ 150,898.84 per month $138,382.92 Principal & Interest $4,932.58 Property Tax $7,583.33 Homeowner's Insurance

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Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information on this site was last updated 04/20/2026. The listing information on this page last changed on 04/20/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Mon 04/20/2026 12:29:15 AM EST) or Miami MLS (last updated Mon 04/20/2026 12:18:07 AM EST) or Stellar MLS (last updated Mon 04/20/2026 12:13:51 AM EST) or Daytona MLS (last updated Sun 04/19/2026 11:36:47 PM EST) or Tallahassee MLS (last updated Sun 04/19/2026 10:48:39 PM EST) or Northeast Florida MLS (last updated Mon 04/20/2026 12:18:50 AM EST) or My State MLS (last updated Sun 04/19/2026 11:30:10 PM EST) or Florida Keys MLS (last updated Mon 04/20/2026 12:28:42 AM EST). Real estate listings held by brokerage firms other than Adams Cameron & Co. REALTORS may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.
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