0 Baths

$3,945,000

Main Key, Barnes Sound, Key Largo FL, 33037

Price per sqft$0.62

Lot size145.5 Acres

Property typeLand

Overview

Active

Listed Aug 24, 2026

Updated Sep 1

MAIN KEY is a 145.5-acre private island with over a mile of pristine white sandy beaches on its east shoreline in Barnes Sound, Monroe County, FL. Its western and southern shoreline of over 4 miles of Mangroves reaching 30 to 50 feet tall provides a rookery that teams with gamefish, shellfish, sea mammals, and tropical birds. All owned by a TIIF Deed. With 12 upland acres, a substantial structure could be built with no ROGO requirements. In the 1930's and 40's, there were 3 large structures on the SE Government Lot area. A new dock permit with lift, platform, and mooring slip exists for the SE beach off the old homesite. An additional second permit is being applied for the south side of Main Key that will be 135 ft with a 40 ft platform and seven heavy pilings to moor a large vessel of up to 100 ft in length. A tide station was established by the USGS, later NOAA in the 1930's. 'The Tides at Main Key' was well known in Marine Weather forecasts on South Florida TV and NOAA Weather Radio for the Upper Keys and Florida Bay. Please contact the listing agents for more detailed information and documentation.

Additional information

MLS^® ID: 616391

Exterior Features

Lot Size: 145.5 Acres

Other Property Details

Taxes: $97
Tax Frequency: Annually
View: Yes
Waterfront: Yes

Listed by KELLY K SHAW PA with American Caribbean Real Estate, Christie's International Real Estate
Listing Contact: 305-664-7303

The IDX display contains information sourced from the Florida Keys Board of REALTORS® as of 9/1/2026. This data is intended solely for personal, non-commercial use and is not to be utilized for any other purposes except to identify potential properties for purchase. Although the MLS data displayed is typically considered reliable, it is not guaranteed to be accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and are advised to conduct their own investigations or seek professional assistance. Other sources besides the Listing Agent may have contributed to the MLS data presented. Unless expressly specified in writing, the Broker/Agent has not confirmed any information obtained from external sources. The Broker/Agent may or may not have acted as the Listing and/or Selling Agent and cannot guarantee the accuracy of property locations displayed on any map. Any compensation offers are solely made to participants of the MLS where the listing is registered.

Data last updated on 9/1/2026 at 1:43 AM UTC