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544 Warren, Key Biscayne, FL 33149

Key Biscayne
Local realty services provided by:CENTURY 21 Move With Us
544 Warren,Key Biscayne, FL 33149
$8,000,000
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  • 6 Beds
  • 6 Baths
  • 1,044 sq. ft.
  • Single family
  • Active
Listed by: james duncan, rocio figueroa
Office: duncan studio real estate division pllc
MLS#:A12079811
Source:FL_RAMC

Price summary

  • Price:$8,000,000
  • Price per sq. ft.:$3,589.05

About this home

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.

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Home facts

  • Year built:2026
  • Subdivision & Development:TROPICAL ISLE HOMES SUB
  • Listing ID #:A12079811
  • Added:57 day(s) ago
  • Updated:October 29, 2026 at 04:09 PM

Rooms and interior

  • Bedrooms:6
  • Total bathrooms:6
  • Full bathrooms:5
  • Half bathrooms:1
  • Flooring:Marble, Wood
  • Kitchen Description:Gas Range, Ice Maker
  • Bedroom Description:Walk-In Closet(s)
  • Living area:1,044 sq. ft.

Heating and cooling

  • Cooling:Central Air, Electric
  • Heating:Electric
  • Central air:Yes

Structure and exterior

  • Year built:2026
  • Building area:1,044 sq. ft.
  • Lot Features:Sprinklers Automatic
  • Construction Materials:Block, Concrete
  • Exterior Features:Open, Outdoor Grill, Porch

Utilities

  • Water:Public Water, Water Available, Water Connected
  • Sewer:Public Sewer, Sewer Available

Finances and disclosures

  • Price:$8,000,000
  • Price per sq. ft.:$3,589.05
  • Tax amount:$29,546 (2025)

Features and amenities

  • Appliances:Gas Range, Ice Maker
  • Amenities:Cathedral Ceilings
  • Pool features:In Ground

Parking

  • Total parking spaces:2
  • Parking description:Attached Carport, Driveway, On Street
MLS LogoThe data relating to real estate for sale on this web site comes in part from a cooperative data exchange program of the Realtor<REGISTERED_LOGO> Association of Martin County, Inc. MLS. Real estate listings held by brokerage firms other than CENTURY 21 Move With Us are marked with the IDX logo (Broker Reciprocity) or name and detailed information about such listings includes the name of the listing brokers. Data provided is deemed reliable but is not guaranteed.

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