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TROPICAL ISLE HOMES SUB · · MLS A12079811
Listed by Duncan Studio Real Estate Division PLLC
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.
The propertyAs the MLS records it
$46,078 per month
30-year fixed, 7.24% interest
The calculator opens on the national average rate for a 30-year fixed-rate loan: 7.24% for the week of October 29, 2026. Source: Freddie Mac, Primary Mortgage Market Survey ↗
For illustration only: an estimate, not a loan offer or a quote. The tax is the last annual bill the MLS records for this property; in Florida a property is reassessed when it is sold, so a buyer's tax will differ. Insurance is not estimated: it is included only when you enter your own quote. The rate is a national weekly average, not the rate a lender will offer you: change it to the one you are quoted.
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Showings of 544 Warren Ln, Key Biscayne, FL 33149 are by appointment. Send the request here, call or write on WhatsApp: Julian Acosta, real estate advisor with Compass, answers within one business day to confirm a day and a time.
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No lists, no obligation.
| Year | Median price per SF | Closed sales |
|---|---|---|
| 2020 | $803 | 54 |
| 2021 | $964 | 109 |
| 2022 | $1,220 | 60 |
| 2023 | $1,249 | 30 |
| 2024 | $1,321 |
Homes of the same kind on the market nearby, the nearest in price first.
LIVE · MLS · AS OF NOV 1, 2026
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1 / 22The information on this page is supplied by the Southeast Florida Multiple Listing Service of the MIAMI Association of REALTORS®. It is deemed reliable but is not guaranteed accurate by the MLS, and it may have changed since the date above. It is provided for your personal, non-commercial use and may not be used for any purpose other than to identify properties you may be interested in purchasing. This listing is held by Duncan Studio Real Estate Division PLLC. Julian Acosta is a real estate advisor with Compass.
A listing shown here may be held by a brokerage other than Compass. To report an error in this listing's information, write to julian.acosta@compass.com.



























































59 PHOTOGRAPHS
Real estate advisor · Compass
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| 2025 | $1,404 | 38 |
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| 2026 to date | $1,498 | 37 |
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These figures are the market's closed sales as the MLS records them: this building's for a unit, a gated community's for a home inside one, and otherwise the sales of this kind of property in the home's market — for a home at $2,000,000 or more, only that market's sales from that price up. Which of these it is, is said above the figures. No snapshot is drawn from fewer than 5 sales of the last twelve months, and a median price per SF is stated only from 3 sales that state a living area. They are not sales by Julian Acosta, they are not an appraisal, and they say nothing of this home's price.
These are the public schools whose attendance zone holds this listing's location, as Miami-Dade County publishes the zones. A zone is not a guarantee of enrollment, the district can change it, and a listing's point on the map can sit a few meters from its lot: confirm the school with Miami-Dade County Public Schools before you rely on it. Distances are straight lines. The page states no rating of any school.
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