544 Warren LaneKey Biscayne, FL 33149Price: $8,000,000

  • Price: $8,000,000
  • Est. Mortgage of $/month
PrintSave Favorite
$
$
%
$/month over payments
Federal 30-year interest rate: 6.66% last updated on Aug 27, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
  • $8,000,000List Price
  • 6Bedrooms
  • 5Full Bath
  • 1Half Baths
  • 1,044Square Feet
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.

Property Details of 544 Warren Lane

Property Details

Interior Features

Other Details

Never Miss New Listings

Never miss new listings between $7,200,000 - $8,800,000 in this neighborhood
Successfully Subscribed!
Do not fill in this field:

I agree to receive marketing and customer service calls and text messages from Marilyn Griffin. To opt out, you can reply 'stop' at any time or click the unsubscribe link in the emails. Consent is not a condition of purchase. Msg/data rates may apply. Msg frequency varies. Privacy Policy.

We will never spam you or sell your details. You can unsubscribe whenever you like.

Mortgage Calculator


$
$
%
Est. Mortgage:
$/month over payments
Federal 30-year interest rate: 6.66% last updated on Aug 27, 2026. * The above figures are estimates provided by Union Street Media using the FRED® API, and are not endorsed or certified by the Federal Reserve Bank of St. Louis. Check with your lender for actual interest rates.
Listed by James Duncan of Duncan Studio Real Estate Division PLLC

The multiple listing information is provided by Miami Association of REALTORS® from a copyrighted compilation of listings. The compilation of listings and each individual listing are © 2026 Miami Association of REALTORS®. All Rights Reserved. The information provided is 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. All properties are subject to prior sale or withdrawal. All information provided is deemed reliable but is not guaranteed accurate, and should be independently verified. Data last updated on September 1, 2026

Hi there! How can we help you?

Contact us using the form below or give us a call.

Send Us A Message:

I agree to receive marketing and customer service calls and text messages from Marilyn Griffin. To opt out, you can reply 'stop' at any time or click the unsubscribe link in the emails. Consent is not a condition of purchase. Msg/data rates may apply. Msg frequency varies. Privacy Policy.

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.