544 Warren Ln, Key Biscayne, Florida 33149
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$8,000,000

Single Family Home for Sale, 544 Warren Ln, Key Biscayne, Florida 33149

  • MLS#A12079811
  • 6
  • 6
  • 97 m² (1,044 ft²)

Listed By Duncan Studio Real Estate Division PLLC

The Single Family Home for Sale located at 544 Warren Ln, Key Biscayne, Florida 33149 is currently for sale. This property has 6 bedrooms, 6 bathrooms.

Date Updated : Sep 3, 2026

Description

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.

Location

544 Warren Ln, Key Biscayne, Florida 33149

544 Warren Ln, Key Biscayne, Florida 33149

Property features

Property

  • Property size: 97 m² (1,044 ft²)
  • Type: Furnished
  • Features: Porch OpenCarportDrivewayFireplace

Lot/Land

  • Land/Lot size: 727 m² (7,828 ft²)

Construction

  • Year built: 2026
  • Roofing: Concrete
  • Condition: New Construction
  • Construction: Concrete/Block

Parking/Garage

  • Parking description: On Street

Bedrooms

  • Bedrooms: 6

Bathrooms

  • Total bathrooms: 6
  • Full bathrooms: 5
  • Half baths: 1

Interior Features

  • Floors: WoodMarble
  • Ceiling: Vaulted Ceilings

Exterior Features

  • Carport spaces: 2

Pool and Spa

  • Pool: Inground

recreational

  • recreational: SpaSwimming PoolBuilt-In Grill

View

  • Features: Pool ViewGarden

Heating and Cooling

  • Heating System: Electric
  • Cooling System: ElectricCentral AC

Utilities

  • Other utilities: Public SewerMunicipal Water

Community

School information

  • High School: Mast Academy
  • Middle School: Ponce De Leon
  • Elementary School: Keybiscayne