MATHESON ESTATES
4 Harbor Point, Key Biscayne FL 33149
7 beds · 7 baths · 3,890 ft²
$14,950,000
Est. Payment $79,570/mo
7
Bedrooms
7
Bathrooms
3,890
Sq. Ft.
1953
Year Built
2
Garage
101
Days on Market
Description
Discover the prestige of Harbor Point, the most coveted address on Key Biscayne. Lined with stunning bayfront estates, Harbor Point is the only private road on the island. Not only is it exclusive, 4 Harbor Point is a Boater’s Dream with 125 FT of water frontage, a safe harbor and deep-water access to accommodate a large yacht. The property boasts views of a private alcove in Hurricane Harbor, a serene refuge for manatees and dolphins. Situated on an expansive 21,250 SF lot, you can build your dream home or remodel the existing spacious home, featuring seven bedrooms and endless potential!
Facts
- MLS#
- A11635992
- Subdivision
- MATHESON ESTATES
- Property Type
- Residential
- Property Sub Type
- Single Family Residence
- Year Built
- 1953
- Lot Size
- 21,250 ft²
- Sq. Ft.
- 3,890 ft²
- Sq. Mt.
- 361 m²
- Price per sq. ft.
- $3,843/ft²
- Price per sq. mt.
- $41,413/m²
- Stories
- —
- Garage
- 2 spaces
- Pool
- —
- Days on Market
- 101 days
- Listed
- Aug 6, 2024
- Last Updated
- Dec 13, 2024
- Price/Lot Sq.Ft.
- $704/ft²
Comparable homes
Same ZIP, similar price + bedrooms.
SOLD$15,500,000
7 bd · 8 ba · 9,848 sqft
766 Harbor Dr, Key Biscayne FL 33149
SOLD$14,850,000
7 bd · 7 ba · 6,490 sqft
610 S Mashta Dr, Key Biscayne FL 33149
SOLD$16,500,000
7 bd · 9 ba · 8,928 sqft
350 Harbor Dr, Key Biscayne FL 33149
SOLD$12,600,000
7 bd · 8 ba · 4,657 sqft
200 Knollwood Dr, Key Biscayne FL 33149
SOLD$16,999,000
7 bd · 9 ba · 5,043 sqft
660 S Mashta Dr, Key Biscayne FL 33149
SOLD$14,250,000
6 bd · 7 ba · 6,373 sqft
900 HARBOR DRIVE, Key Biscayne FL 33149
$12,980,000
6 bd · 8 ba · 6,405 sqft
420 Island Dr, Key Biscayne FL 33149
SOLD$12,950,000
6 bd · 6 ba · 5,191 sqft
945 Mariner Drive, Key Biscayne FL 33149
Market insights for Key Biscayne
Live MLS-derived activity. Forecast is a conservative rule-of-thumb estimate — not a guarantee.
Sellers market
May 2026
77
Median days to sold
+4.5%
1-year price forecast (est.)
Price & tax history
From the live MIAMI MLS feed. Older history requires the ListingHistory resource (not yet enabled).
| 12/13/2024 | Sold | $14,950,000 |
| 8/6/2024 | Listed for sale | $14,950,000 |
History reflects fields present on the live MLS record. Full multi-year history requires the MIAMI ListingHistory resource (not yet enabled).
Location
GreatSchools Summary Ratings
Public + private K-12 schools within 5 miles of this listing.
Henry M. Flagler Elementary SchoolPK,KG,1,2,3,4,5 · public · 0.5 mi
- New Generations Pre-School
PK,KG · private · 0.5 mi
- Bamby's Day Care Center
PK,KG,1,2,3,4,5,UG · private · 0.6 mi
- Kinloch Park Middle School
6,7,8 · public · 0.7 mi
- Acceleration Academies LLC Hialeah
9,10,11,12 · public · 0.8 mi
- Kinloch Park Elementary School
PK,KG,1,2,3,4,5 · public · 0.8 mi
- Discovery Years
PK,KG · private · 1.0 mi
- Us International Christian Academy
9,10,11,12 · private · 1.0 mi
- Fairlawn Elementary School
PK,KG,1,2,3,4,5 · public · 1.3 mi
- Yin Yang Academy
KG,1,2,3,4,5,6 · private · 1.4 mi
Data provided by GreatSchools.org © 2026. All rights reserved.Estimated Monthly Payment
$92,179/mo
Principal & Interest
$79,570
Property Tax
$12,458
Insurance
$150
HOA
$0
Estimates only. Actual payment depends on credit, lender, insurance carrier, and FL/Miami-Dade specifics. Contact Rangely for a precise quote.
The data relating to real estate for sale on this website comes in part from the Southeast Florida Multiple Listing Service. MLS Data is deemed reliable, but is not guaranteed accurate by MIAMI REALTORS®.
Accuracy of listing information is not guaranteed. Listing information is provided for personal consumer, non-commercial use, solely to identify potential properties for potential purchase. All other use is strictly prohibited and may be a violation of federal and state law.
Copyright Southeast Florida MLS a/k/a SEFMLS © 2026.
Updated within 24 hours
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