544 Warren Ln
Single Family Home
544 Warren Ln
$8,000,000
544 Warren Ln, Key Biscayne, FL, 33149

Single Family Home
544 Warren Ln
$8,000,000
544 Warren Ln, Key Biscayne, FL, 33149

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
$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
- 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
- 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
Location Scores
Location
544 Warren Ln, Key Biscayne, FL, 33149