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$8,000,000
Monthly Est:$39,819
6 Beds
6 Baths5 full baths + 1 half bath
1,044sqft
544 Warren Ln, Key Biscayne, FL 33149
$8,000,000
$39,819/moEst:
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Single Family Residence
Built in 2026
$-- HOA
7,840.8 sqft lot
$7,663/sq.ft
Description
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.
- Houzeo last checked: 2 minutes ago
- Listing updated: October 31, 2026 at 3:48 am
- Listing Provided by: James S Duncan DRE #3231829, Rocio Figueroa (305) 815-3688 DRE #3323525 | Duncan Studio Real Estate Division PLLC (305) 979-2520
- Source: Beaches MLS-FL | MLS#: A12079811
Property Details
Status
Active
Type
Single Family Residence
No. of Stories
2
County
City
Neighborhood
--
Year Built
2026
HOA Fees
-
Finished Area
1,044 sqft
Lot Size
7,840.8 sqft lot
Basement Area
- sqft
MLS Name
Beaches MLS
MLS Number
A12079811
MLS Status
Active
Days on Market
63
Cumulative Days on Market
62
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Location
Facts & Features
Rooms
Bedrooms & bathrooms
Bedrooms: 6
Bathrooms: 6
Interior
Appliances
Gas Range, Ice Maker
Flooring
Marble, Wood
Sewer
Public Sewer
Exterior Features
Built In Barbecue, Barbecue, Outdoor Living Area
Heating
Electric
Interior Features
Main Level Primary, Vaulted Ceilings, Walk In Closets
Cooling
Central Air, Electric
Construction
Year Built
Year Built: 2026
Home type
Single Family Residence
Property Condition
New Construction
Roof
Concrete
Construction Materials
Block
Utilities & Energy
Parking Features
Attached Carport, Carport, Driveway, On Street
Water Source
Public
Association Amenities
Other
Utilities
Cable Available
Pool Features
In Ground
Other Features
Disclosures
Flood Plain Disclosure
Patio And Porch Features
Porch
Lot Features
Sprinklers Automatic
Subdivision Name
Tropical Isle Homes Sub
Price History
| Date | Event | Price |
|---|---|---|
08/29/2026 Source: | Off Market | $8,000,000 $7,663/sqft |
08/29/2026 Source: | Listed for Sale | $8,000,000 +572.27% $7,663/sqft |
06/18/2020 Source: #A10833693 | Off Market | $1,190,000 $1,140/sqft |
06/18/2020 Source: #A10833693 | Sold | $1,190,000 +9.68% $1,140/sqft |
06/18/2020 Source: | Price Decreased | $1,085,000 -8.82% $1,039/sqft |
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