59 photos
544 Warren Ln
Key Biscayne, FL 33149
Listing courtesy of Duncan Studio Real Estate Division PLLC (James Duncan). Contact: [email protected].
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.
- Principal and interest
- $40,452
- Property tax
- $12,263
- Homeowners insurance
- $5,000
- HOA(not in the listing)
- $0
An estimate, not a loan offer. The rate and insurance are assumptions to edit with your own quotes; Florida insurance varies widely by age, construction and distance to the coast. Flood insurance and PMI are not included.
Estimate: the price times the Miami-Dade County average total millage (18.49 mills, Florida Department of Revenue, 2025 average total millage by county), less the homestead exemptions. The actual bill depends on the city, the assessed value and special assessments. Save Our Homes then caps annual assessment increases at 3% or inflation, whichever is lower.
Inside the 1% annual chance floodplain. Lenders require flood insurance on a financed home; ask for the elevation certificate.
Sources: FEMA National Flood Hazard Layer and the Florida Division of Emergency Management evacuation zones, looked up at the listing point. Confirm with an elevation certificate and your insurer.
Listing data provided by the Southeast Florida Multiple Listing Service (MIAMI REALTORS®). The data is deemed reliable but is not guaranteed accurate by the MLS. IDX information is provided exclusively for consumers' personal, non-commercial use, may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing, and is deemed reliable but is not guaranteed accurate by the MLS. Atlantic Luxury Advisors is a real estate team at Keller Williams Realty. Payment, tax and flood figures on this page are estimates by Atlantic Luxury Advisors, not MLS data.