544 Warren Ln

Single Family Home

544 Warren Ln

$8,000,000

544 Warren Ln, Key Biscayne, FL, 33149

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LIST PRICE$8,000,000
BEDROOMS6
BATHROOMS5.5
HOUSE sq ft1,044
LOT sq ft7,828

Take a closer look

HOA: request current costs · Last reported tax: $29,546/yr

Estimate monthly payment, including HOA and taxes

Monthly Payment

$48,999/mo

Principal & interest$42,536
Property taxfrom listing$2,462
Homeowners insuranceestimate$4,000

$1,600,000 down

Principal & interest is exact for these inputs. Tax and HOA come from the listing; rate, insurance are editable estimates. Not a loan offer.

Overview

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

$8,000,000
Property Type
Residential
Subtype
Single Family Residence
Year Built
2026
Status
Active
MLS #
A12079811
Living Area
1,044 sq ft
$/Sq Ft (Living)
$7,663
Lot Size
7,828 sq ft
$/Sq Ft (Lot)
$1,022
Annual Taxes
$29,546
Days on Market
24

Notable Features

Scenic ViewsNew Construction

Location Scores

Location

544 Warren Ln, Key Biscayne, FL, 33149