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544 Warren Lane, Key Biscayne, FL - photo 1

$8,000,000

544 Warren Lane

Key Biscayne, FL 33149

Estimated payment $48,000/month

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6Beds
6Baths
1,044Sq Ft
$7663Price/Sq Ft

Preferred partner

Kinsfolk Realty

Kinsfolk Signature Realty

Powered by Hometrino

(813) 602-0498

Highlights

No HOA
Private Pool
Fireplace
Built in 2026
7,841 sqft Lot

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.

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Facts & features

Bedrooms & bathrooms

  • •Bedrooms:6
  • •Bathrooms:6
  • •Full bathrooms:0

Heating

  • •Has Heating:Yes

Interior area

  • •Total structure area:1,044 sqft
  • •Total interior livable area:1,044 sqft

Parking

  • •Parking features:N/A
  • •Garage spaces:0
  • •Has attached garage:No

Lot

  • •Size:7,841 sqft

Details

  • •Parcel number:N/A

Type & style

  • •Home type:Single Family Residence
  • •Property subtype:Residential

Materials

  • • N/A

Condition

  • •Year built:2026

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Price history

DateEventPrice
2026-08-29T00:00:00.000ZListed for sale$8,000,000$7663/sqft

Listing Agent

James S Duncan

Duncan Studio Real Estate Division PLLC

Brokerage Phone: 305-979-2520

Source: Beaches MLS · MLS #A12079811

Data Powered by Home Junction, Inc.

Nearby

Schools

KEY BISCAYNE K-8 CENTER

Elementary · 0.2 mi

UNIVERSITY OF MIAMI COOPERATIVE INSTITUTE FOR MARINE AND ATMOSPHERIC STUDIES (CIMAS)

2.8 mi

Supermarkets

Winn-Dixie

0.3 mi

Key Biscayne Green Market

0.4 mi

NAHUEN Gourmet Market

0.5 mi

Dining

Cocina

0.3 mi

Panna

0.3 mi

Tasters Lane

0.4 mi

Parks

Hampton Park

0.2 mi

Harbor Park

0.2 mi

Paradise Park

0.3 mi

Beaches

Crandon Park Beach

0.8 mi

Crandon Beach

1.5 mi

Hobie Island Beach Park

3.7 mi

Nearby amenity locations include data © OpenStreetMap contributors.