Flat Fee MLS Sells

544 Warren Lane

$8,000,000
Key Biscayne, FL 33149 · Miami-Dade County
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Bedrooms6
Bathrooms5.5
Living area1,044 sqft
Lot size0.18 acres
Year built2026
Property typeSingle Family Residence
Days on market25
MLS #A12079811

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.

Selling a home in Key Biscayne? You can list on the same MLS for a flat fee instead of a listing commission. See how flat fee MLS works in Key Biscayne, check what the plans cost, or start your listing.

Listed by Duncan Studio Real Estate Division PLLC · 305-979-2520

Listing data comes from the participating MLS and is provided for consumers’ personal, non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Properties shown may be listed by brokerages other than Pure Equity Realty LLC, and are marked with the listing office’s name. Information is deemed reliable but is not guaranteed accurate by the MLS or by Pure Equity Realty LLC, and should be independently verified. Data last updated October 16, 2026.

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