New construction, this extraordinary custom Cape Dutch residence is a masterwork of timeless design, brought to life by Duncan and Heuser Design and Development, with interiors curated by James Duncan. Every detail, from the graceful gabled facade to the refined finishes within, reflects a rare devotion to craftsmanship and
enduring elegance. Offering six generously proportioned bedrooms and six and a half beautifully appointed bathrooms, this home balances gracious scale with warm, livable comfort. Soaring ceilings, thoughtfully placed windows, and an effortless flow between rooms create a sense of light and openness throughout, while curated materials and bespoke millwork lend a distinctly luxurious character to every space. This is more than a house; it is a legacy residence, designed to be lived in beautifully for generations. A truly rare offering for the discerning buyer seeking timeless architecture, exceptional interiors, and uncompromising quality throughout.
enduring elegance. Offering six generously proportioned bedrooms and six and a half beautifully appointed bathrooms, this home balances gracious scale with warm, livable comfort. Soaring ceilings, thoughtfully placed windows, and an effortless flow between rooms create a sense of light and openness throughout, while curated materials and bespoke millwork lend a distinctly luxurious character to every space. This is more than a house; it is a legacy residence, designed to be lived in beautifully for generations. A truly rare offering for the discerning buyer seeking timeless architecture, exceptional interiors, and uncompromising quality throughout.
Property Details
Price:
$8,000,000
MLS #:
A12079811
Status:
Active
Beds:
6
Baths:
5.5
Address:
544 Warren Ln
Type:
Single Family
Subtype:
Single Family Residence
Subdivision:
TROPICAL ISLE HOMES SUB
Neighborhood:
tropicalislehomessub
City:
Key Biscayne
Listed Date:
Aug 29, 2026
State:
FL
Finished Sq Ft:
1,044
Total Sq Ft:
2,229
ZIP:
33149
Year Built:
2026
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Schools
Elementary School:
Keybiscayne
Middle School:
Ponce De Leon
High School:
Mast Academy
Interior
Appliances
Gas Range, Ice Maker
Bathrooms
5 Full Bathrooms, 1 Half Bathroom
Cooling
Central Air, Electric
Flooring
Marble, Wood
Heating
Electric
Exterior
Architectural Style
Detached, Two Story
Community Features
Additional Amenities
Construction Materials
Concrete Block Construction
Exterior Features
Built- In Grill
Parking Features
Attached Carport, Driveway, On Street
Roof
Concrete
Financial
Tax Year
2025
Taxes
$29,546
Map
Community
- Address544 Warren Ln Key Biscayne FL
- SubdivisionTROPICAL ISLE HOMES SUB
- CityKey Biscayne
- CountyMiami-Dade County
- Zip Code33149
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544 Warren Ln
Key Biscayne, FL
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