by Global Lifestyle Properties

Check Availability
$8,000,000
● House - For Sale

544 Warren Ln

Key Biscayne, FL 33149
bedrooms
6 Beds
bathrooms
5 Baths, 1 Half Bath
square feet
1,044 Ft²
$41,744
Est. Monthly

About This Property

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.
Unit Size
1,044 Ft²
Days on Market
34 days
Land Size
0.18 acres
Price per sqft
$7,663
Property Type
House
Property Taxes
$2,462
HOA Dues
-
Year Built
1951

Listed By

James Duncan
Duncan Studio Real Estate Division PLLC
Rocio Figueroa
Duncan Studio Real Estate Division PLLC

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Last updated: 22 days ago (Miami MLS #A12079811)

Price History

Date / Event Date Event Price
Aug 29, 2026 Listed by Duncan Studio Real Estate Division PLLC $8,000,000
Listed by Duncan Studio Real Estate Division PLLC
Jun 19, 2020 Sold
Sold
Apr 19, 2012 Sold
Sold

Property Highlights

Parking Available
Air Conditioning
Fireplace
Parking Details
Has Carport
Has Open Parking
Parking Features: Attached Carport, Driveway, On Street
Interior Details
Half Bathrooms: 1
Full Bathrooms: 5
Interior Features: Vaulted Ceiling(s), Walk-In Closet(s), Other, First Floor Entry
Appliances: Gas Range, Ice Maker
Flooring Type: Marble, Wood
Door Features: High Impact Doors
Has Fireplace
Fireplace Features: Fireplace
Exterior Details
Square Footage: 1044
Property Condition: New Construction
Architectural Style: Detached, Two Story
Year Built: 2026
Building Name: TROPICAL ISLE HOMES SUB
Building Area Total: 2229
Building Area Units: Square Feet
Window Features: Clear Impact Glass
Construction Materials: Concrete
Patio and Porch Features: Porch
Pool Features: In Ground
Lot Features: Less Than 1/4 Acre Lot
Lot Size Area: 7828
Lot Size Units: Square Feet
Lot Size Acres: 0.18
Lot Size Square Feet: 7828
Water Source: Municipal Water
Financial Details
Tax Annual Amount: $29,546
Utilities Details
Cooling Type: Central Air, Electric
Heating Type: Electric
Sewer : Public Sewer

Building Info

Overview

    General

  • Year Built: 1951
  • Effective Year Built: 1986
  • Building Count: 1
  • Bedroom Count: 3
  • Bathroom Count: 1
  • Full Bathrooms: 1
  • Partial Bathrooms: 1
  • Building Condition: 0
  • Building Quality: 0
  • Construction Type: 4
  • Building Style: 0
  • Exterior Walls Type: 7
  • Interior Walls Type: 0
  • Roof Shape Type: 0
  • Roof Cover Type: 0
  • Floor Count: 100
  • Living Units: 1
  • Floor Cover: 0
  • Basement Type: 0
  • Basement Area: 0
  • Garage Type: 0
  • Parking Space Count: 0
  • Patio Type: 17
  • Porch Type: 36
  • Pool Type: 0

    Dimensions

  • Lot Size Square Feet: 7,828
  • Lot Size Depth Feet: 1,010
  • Lot Size Frontage Feet: 775
  • Total Building Area: 2,229
  • Gross Building Area: 2,229
  • Building Area: 1,044
  • Building Area Measurement: L

    Heating and Cooling

  • Air Conditioning: 0
  • Heating: 0
  • Heated Square Feet: 1,044
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 0
  • Water Service: 0

Building

  • Building Type: 0
  • Property Class: R
  • Subdivision: TROPICAL ISLE HOMES SUB
  • Land Acres: 0000000180
  • Standard Land Use Code: 1001
  • County Land Use Code: 0101
  • State Land Use Code: 001
  • Legal Description 1: 5 55 42 TROPICAL ISLE HOMES SUB PB 50-64 LOT 1 BLK 3 LOT SIZE 77.500 X 101 73R-81592

Neighborhood

  • School District Name: Dade County School District
  • School Tax School District: KEY BISCAYNE
  • Census Tract: 004602

Zoning

  • Zoning: 0100

Geography

  • Assessors Map Reference: 325
  • District: 24
  • Parcel: 24-5205-002-0160
  • Block: 3
  • Lot: 1
  • Meridian: SEC 05 TWN 55S RNG 42E
  • Municipality: KEY BISCAYNE
  • Latitude: 25.6914
  • Longitude: -80.1693

    Address

  • Full Address: 544 Warren Ln
  • Address - House Number: 544
  • Address - Street Name: Warren
  • Address - Suffix Type: Ln
  • State: FL
  • City Name: Key Biscayne
  • Carrier Code: C089
  • 4-Digit Zip Code: 1827
  • Zip Code: 33149

Valuation

    Tax

  • Total Area: 1,649
  • Tax Year: 2023
  • Tax Amount: $2,632,278
  • Tax Rate Code Area: 2400

    Appraisal Valuation

  • Standard Deviation: 0.1797
  • Valuation Date: Apr 03, 2024
  • Confidence Score: 76
  • Final Value: 2,272,856
  • High Value: 2,681,374
  • Low Value: 1,864,339

    Market Valuation

  • Market Total Value: $1,855,406
  • Market Land Value: $1,800,440
  • Market Improvement Value: $54,966

    Assessments Valuation

  • Assessed Year: 2023
  • Assessed Total Value: $1,363,243

    Sales

  • Current Sale Contract Date: Jun 18, 2020
  • Current Sale Recording Date: Jun 19, 2020
  • Current Sale Price:
  • Current Sale Document Type: 71
  • Current Sale Input Document Number: 2020R0342953
  • Previous Sale Recording Date: Apr 19, 2012
  • Previous Sale Contract Date: Apr 16, 2012
  • Previous Sale Amount: $998,000
  • Previous Sale Document Type: 71
Data used for valuation calculations is provided by RealtyHop, and other third party sources

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

About Key Biscayne


Similar Homes for Sale

Currently no similar homes around

Nearby Rentals

Unit for rent at 200 Galen Drive, Key Biscayne, FL, 33149

$3,800 /mo

  • 1 Bed
  • 1 Bath
  • 690 ft²
200 Galen Drive #308, Key Biscayne, FL, 33149 Listing by Cliff Glansen


Frequently Asked Questions

When was property at 544 Warren Lane built and last sold?
The property at 544 Warren Lane was built in 1951 and last sold on Jun 18, 2020 for $1,052,500.
How much is this home worth?
The estimated value of the home located at 544 Warren Lane is $8,080,000.
What are some comparable homes to 544 Warren Lane?
There are currently no comparable homes to 544 Warren Lane.