$16,800,000
640 S Mashta, Key Biscayne FL, 33149
Overview
Active
Listed Apr 2, 2026
Updated Sep 20
$111,771/mo
Est. mortgage payment based on a $16,800,000 home price.
All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.
Additional information
- MLS® ID
- A11990382
Interior Features
- Bedrooms
- 4
- Bathrooms
- 4
- Cooling
- Yes
- Heating
- Yes
- Basement
- No
Exterior Features
- Lot Size
- 0.34 Acres
Other Property Details
- Taxes
- $155,651
- Tax Frequency
- Annually
- Garage
- Yes
- View
- Yes
- Pets Allowed
- Yes
- Pool
- Yes
- Waterfront
- Yes
- 55+/Senior Community
- No
Courtesy of DLS International Realty, Brigitte De Langeron,
Listing Contact: 305-244-7493
Based on information from Martin County REALTORS of the Treasure Coast, Inc. (RAMC) as of 9/20/2026. 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 5:12 AM UTC, 9/20/2026