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6 Beds
8 Baths
8,202 sqft

$85,000/month

440 S Mashta, Key Biscayne FL, 33149

Price per sqft$10.36
Built in2013
Property size8,202 sqft
Property typeResidential
Courtesy of Gustavo Gambino with Gambino Real Estate Corp.

Overview

Active

Listed Apr 14, 2024

Updated Sep 15

Price is per week. Limited availability. Massive glass double-door entrance, one-of-a-kind experience. Biscayne Bay & infinity pool views unfold instantly as travertine deck creates a seamless transition to the pool & ocean. The ZEN serenity of the residence is enhanced by its curated color palette and the tranquil ambiance throughout. Gated, manicured landscape, security system. Sleek, elegant kitchen overlooks both the reception area & the shimmering bay. Designer furniture deserves its own chapter. Wraparound balconies, rooftop jacuzzi further enhances this home’s breathtaking architectural presence. Family room, playroom, office, modern gym featuring Peloton, NordicTrack & Life Fitness equipment. Sauna to elevate wellness & SUPs + kayaks to complete this exclusive oceanfront lifestyle.

Additional information

MLS® ID
A11569204
Available from
November 20, 2026

Interior Features

Bedrooms
6
Bathrooms
8
Cooling
Yes
Heating
Yes
Basement
No

Exterior Features

Lot Size
0.39 Acres

Other Property Details

Garage
Yes
View
Yes
Furnished
Yes
Pool
Yes
Waterfront
Yes
55+/Senior Community
No

Also listed on RMLS & RAGFL

MLS provider logo

Courtesy of Gambino Real Estate Corp., Gustavo Gambino,
Listing Contact: 786-281-5050 

Based on information from Martin County REALTORS of the Treasure Coast, Inc. (RAMC) as of 9/15/2026. 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 5:41 AM UTC, 9/15/2026

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