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$8,000,000
24 Days On Site

544 Warren Ln
Key Biscayne, FL 33149

For Sale|Single Family Residence|Active
6
Beds
6
Total Baths
5
Full Baths
1
Partial Bath
1,044
SqFt
$7,663
/SqFt
2026
Built
Subdivision:
TROPICAL ISLE HOMES SUB
County:
Miami-Dade
Call Now: 786-232-3399
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786-232-3399
544 Warren Ln544 Warren Ln544 Warren Ln544 Warren Ln
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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.

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Listing Snapshot
Price 
$8,000,000
Days On Site 
24 Days
Bedrooms 
6
Inside Area (SqFt) 
1,044 sqft
Total Baths 
6
Full Baths 
5
Partial Baths 
1
Lot Size 
0.1797 Acres
Year Built 
2026
MLS® Number 
A12079811
Status 
Active
Property Tax 
$29,546
HOA/Condo/Coop Fees 
N/A
Sq Ft Source 
Builder
Friends & Family
Recent Activity
4 weeks agoListing first seen on site
4 weeks agoListing updated with changes from the MLS®
General Features
Carport 
2
Direction Faces 
Southeast
Disclosures 
Flood Plain Disclosure
Levels 
Two
Parking 
Attached CarportDrivewayOn Street
Property Sub Type 
Single Family Residence
Sewer 
Public Sewer
SqFt Total 
2229
Style 
DetachedTwoStory
Utilities 
Cable Available
Water Source 
Public
Zoning 
0100
Interior Features
Appliances 
Gas RangeIce Maker
Cooling 
Central AirElectric
Fireplace 
Yes
Flooring 
HardwoodMarbleWood
Furnished 
Furnished
Heating 
Electric
Interior 
Vaulted Ceiling(s)Walk-In Closet(s)Master Downstairs
Spa 
Yes
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Exterior Features
Construction Details 
Block
Exterior 
Outdoor Grill
Patio And Porch 
Porch
Pool Features 
In GroundPrivate
Private Pool 
Yes
Roof 
Concrete
Spa 
Yes
View 
GardenPool
Waterview 
GardenPool
Community Features
Community Features 
Other
MLS Area 
52
Financing Terms Available 
CashConventionalOwner May Carry
Schools
School District
Unknown
Elementary School
Keybiscayne
Middle School
Ponce De Leon
High School
Mast Academy
Listing courtesy of Duncan Studio Real Estate Division PLLC

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Neighborhood & Commute
Source: Walkscore
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