544 Warren Ln, Key Biscayne, FL 33149

About This Home

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.

Property Details

Bathrooms Full

5

Bathrooms Half

1

Interior Features

First Floor Entry, Vaulted Ceiling(s), Walk-In Closet(s), Other

Appliances

Gas Range, Ice Maker

Flooring

Marble, Wood

Heating

Electric

Cooling

Central Air, Electric

Furnished

Furnished

Architectural Style

Detached, Two Story

Garage Spaces

0

Parking Features

Attached Carport, Driveway, On Street

Pool Features

In Ground

Property Condition

New Construction

Building & Association

Building Name

TROPICAL ISLE HOMES SUB

Association

No

Lot & Construction

Lot Features

Less Than 1/4 Acre Lot

Lot Size Square Feet

7,828

Waterfront

No

View

Garden, Pool

Construction Materials

Concrete Block Construction

Roof

Concrete

Exterior Features

Built-In Grill

New Construction

Yes

Public Records

Parcel Number

24-52-05-002-0160

Tax Annual Amount

$29,546

Tax Year

2,025

Zoning

0100

County Or Parish

Miami-Dade County

Open Houses

• Wednesday, September 2, 2026 at 4:00 PM

Location