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4 Beds
4 Baths
3,549 sqft

$5,378,000

690 Warren, Key Biscayne FL, 33149

Price per sqft$1,515.36
Built in2000
Property size3,549 sqft
Property typeResidential
Courtesy of Brigitte Nachtigall with One Sotheby's International Realty

Overview

Active

Listed Apr 30, 2026

Updated 4 min ago

A truly exceptional Miami Modern Tropical residence set on a prime 8,010 SF corner lot, offering 3,549 SF of beautifully curated living space with 4 bedrooms and 3.5 bathrooms. Designed by architect Hervin Romney, a founding member of Arquitectonica, the home reflects a distinctive architectural vision inspired by the organic principles of Frank Lloyd Wright and the expressive forms of Antoni Gaudí, where art, design, and nature seamlessly converge. This residence captivates with its abundance of natural light, soaring high ceilings, fluid open spaces, and harmonious lines that create a sense of warmth, sophistication, and effortless flow throughout the main living areas. The beautifully remodeled kitchen and bar are a true centerpiece, featuring high-end appliances, premium finishes, refined craftsmanship, and a design that balances functionality with striking aesthetics. Step outside into your own private tropical retreat, where lush landscaping, graceful curved terraces, and a stunning swimming pool create an atmosphere of tranquility and escape. This outdoor sanctuary is perfect for both relaxation and entertaining. As an added privilege, the property includes membership to the Key Biscayne Beach Club, offering exclusive access to one of Miami’s most coveted coastal lifestyles. Key Biscayne is renowned for its pristine beaches, charming restaurants, and vibrant yet relaxed atmosphere—delivering a true island lifestyle just minutes from the city.

$35,780/mo

Est. mortgage payment based on a $5,378,000 home price.

All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.

Additional information

MLS® ID
A12010108

Interior Features

Bedrooms
4
Bathrooms
4
Cooling
Yes
Heating
Yes
Basement
No

Exterior Features

Lot Size
0.18 Acres

Other Property Details

Taxes
$19,950
Tax Frequency
Annually
View
Yes
Pool
Yes
55+/Senior Community
No

Also listed on RAMB and RMLS & RAGFL

MLS provider logo

Courtesy of One Sotheby's International Realty, Brigitte Nachtigall,
Listing Contact: 305-710-9664 

Based on information from Martin County REALTORS of the Treasure Coast, Inc. (RAMC) as of 10/20/2026. This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. Display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals. Information from sources other than the Listing Agent may have been included in the MLS data. Unless otherwise specified in writing, Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent.

©2026 Martin County REALTORS of the Treasure Coast, Inc. All rights reserved.

Data last updated 3:40 PM UTC, 10/20/2026

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