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544 Warren Ln, Key Biscayne, FL 33149

$8,000,000
  • 544 Warren Ln, Key Biscayne, FL 33149 Main Photo

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New to the Market Active
BEDS6 BATHS5 full 1 partial SQUARE FEET1,044 MLS#A12079811
STATUSActive PROPERTY TYPEResidential - Single Family SUBDIVISIONTROPICAL ISLE HOMES SUB

Property 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.

544 Warren Ln | MLS# A12079811

This single family home located at 544 Warren Ln, Key Biscayne, FL 33149 is currently listed for sale with an asking price of $8,000,000. This property was built in 2026 and has 6 bedrooms and 5 full and 1 partial baths with 1044 sq. ft. Warren Ln is located in the TROPICAL ISLE HOMES SUB subdivision. Search TROPICAL ISLE HOMES SUB real estate on rtaylor.realty100.com today.

Property Features

Property Type: Residential - Single Family
Cooling: Central Air, Electric
Heating: Electric
Home Style: Detached, Two Story
Lot Size: 0.18 Acres
Roof Type: Concrete
Taxes: $29,546
Year Built: 2026

Amenities

First Floor Entry
Vaulted Ceiling(s)
Walk-In Closet(s)
Other
Built-In Grill

Feature Descriptions

Appliances: Gas Range, Ice Maker
Community Features: Additional Amenities
Crops Included Y/N: No
Door Features: High Impact Doors
Exterior: Concrete Block Construction
Fireplace: Fireplace
Flooring: Marble, Wood
Home Warranty Y/N: No
Lease Considered Y/N: No
Listing Terms: All Cash, Conventional, Owner Will Carry
Lot: Less Than 1/4 Acre Lot
Parcel#: 24-52-05-002-0160
Parking: Attached Carport, Driveway, On Street
Parking Notes: Attached Carport, Driveway, On Street
Patio/Porch: Open Porch
Pool: In Ground
Property Attached Y/N: No
Property Sub-Type: Single Family Residence
Sewer: Public Sewer
Spa: Yes
Special View Info: Garden, Pool
Water: Municipal Water
Window: Clear Impact Glass

Local Schools

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

Listed By / Shown By

Listed By

Agency Name: Duncan Studio Real Estate Division PLLC
Agency Phone: 305-979-2520

Shown By

Agent Name: Richard Taylor
Agent Phone: Cell: (305) 775-4064
Agency Title: Realty 100

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Estimated Payment

$ 22,600.03 per month $17,804.53 Principal & Interest $2,462.17 Property Tax $2,333.33 Homeowner's Insurance

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Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information on this site was last updated 08/29/2026. The listing information on this page last changed on 08/29/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Sat 08/29/2026 12:00:03 AM EST) or Miami MLS (last updated Fri 08/28/2026 11:49:09 PM EST) or Stellar MLS (last updated Fri 08/28/2026 11:55:10 PM EST) or Beaches MLS (last updated Fri 08/28/2026 11:55:41 PM EST). Real estate listings held by brokerage firms other than Realty 100 may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.
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