• Share

544 Warren Ln, Key Biscayne, Florida 33149

Active For Sale
$8,000,000
  • Beds 6
  • Baths 6
  • Sq Ft 1,044 Sqft
  • Visits: 8 in 20 days

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 rnenduring 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.

Features

  • Swimming Pool: Pool, In Ground
  • Heating System: Electric
  • Cooling System: Electric, Central Air
  • Patio: Open, Porch
  • Parking: Driveway, On Street, Attached Carport

Appliances

  • Appliances: Ice Maker, Gas Range

Address Map

  • Country: US
  • State: FL
  • County: Miami-Dade
  • City: Key Biscayne
  • Subdivision: TROPICAL ISLE HOMES SUB
  • Zipcode: 33149
  • Street: Warren Ln
  • Street Number: 544
  • Floor Number: 0
  • Longitude: W81° 49' 50.7''
  • Latitude: N25° 41' 29.2''
  • MLS Area: 52

MLS Addon

  • Architectural Style: Detached, Two Story
  • Association Fee: $0
  • Association Fee Frequency: Monthly
  • Carport Spaces: 01/01/1970
  • Close Date:
  • Close Price: $0
  • Elementary School: Keybiscayne
  • Exterior Features: Security/High Impact Doors, Porch, Outdoor Grill
  • Fireplaces Total: 0
  • Flooring: Wood, Marble, Hardwood
  • Garage Spaces: 0
  • High School: Mast Academy
  • Insurance Expense: $0
  • Interior Features: Bedroom on Main Level, First Floor Entry, Walk-In Closet(s), Vaulted Ceiling(s), Fireplace
  • Levels: Two
  • Lot Features: < 1/4 Acre, Sprinklers Automatic
  • Middle Or Junior School: Ponce De Leon
  • New Taxes Expense: $0
  • Stories: 2
  • Stories Total: 0
  • Tax Annual Amount: $29,546
  • Utilities: Cable Available
  • Window Features: Impact Glass

Location

Listing Updated: 2026-09-17 07:55:11

  • Property Type : Single Family
  • Property Sub Type : Single Family Residence
  • Listing Type : For Sale
  • Listing ID : A12079811
  • Price : $8,000,000
  • View : Garden, Pool
  • Bedrooms : 6
  • Bathrooms : 6
  • Full Bathrooms : 5
  • Half Bathrooms : 1
  • Square Footage : 1,044 Sqft
  • Year Built : 2026
  • Lot Area : 0 Acre
  • Listing Status : Active
  • Days On Market : 19
Contact Agent
Required
Required
Required
By proceeding, you consent to receive calls and texts at the number you provided, including marketing by autodialer and prerecorded and artificial voice, and ettmail, about your inquiry and other home-related matters, but not as a condition of any purchase.

Similar Single Family