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Land for Sale in Key Largo, Florida

Main Key Barnes Sound, Key Largo, FL 33037

$5,900,000
146 acres
Active
Est $40,278/mo

MAIN KEY is a 145.5-acre, private island, with pristine, white sandy beaches located in Barnes Sound, Ocean Reef area, in Monroe County, The Florida Keys. There is approximately 12 acres of upland elevation where a structure could be built and an active dock and lift permit to build on the East of the SE beach, from the Government Lot, with plans for a 295' long dock with a 20 ft platform for a lift and a 30' boat slip. A 2nd dock permit is being applied for on the South side of Main Key, which will be 135 feet with a 30 to 40 ft platform and seven heavy pilings to moor a large vessel or work barge up to 100 feet in length. There was a house built on the island at one time. ''The Tides of Main Key'' is well known in South Florida in Marine Weather forecasts on TV, Radio, NOAA weather, or online for tides in the Upper Keys and Key Largo. The tide station at Main Key was established in the 1930's and is still reported in the tide forecasts. Before online and smartphones, ''The tides at Main Key in Barnes Sound'' was a frequently reported tide station for the western bay waters of North Key Largo and is still reported online for projected tides as one of the official tide stations to this day.

Location

Street address
Main Key Barnes Sound
Community
Ocean Reef Club (905.0)
Elevation
5 feet
Coordinates
25.2382, -80.4037

Directions

Approximately 4 miles North of Gilbert's Marina, by boat, in Barnes Sound.

Property details

Acreage
145.5 acres
Zoning
OS - Offshore Island District
MLS #
FLKEYSMLS 616391
Posted

Property taxes

2024
$97

Parcels

  • 00091640-000000

Legal description

Details and features

Listing

Type
Land

Lot

View
Ocean
Waterfront
Beach Front, Oceanfront, Waterfront

Listing history

DateEventPriceChangeSource
Sept 5, 2025New listing$5,900,000FLKEYSMLS
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This 145.5-acre property is located at Main Key Barnes Sound in Key Largo, FL 33037. The property is available for sale for $5,900,000 with a price per acre of $40,550.

  • Listed by American Caribbean Real Estate, Christie's International Real Estate, (305) 664-4966, Source

Checked 43 mins ago — Updated

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Copyright (C) 2025 Florida Keys Board of REALTORS®. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

Kelly Shaw
American Caribbean Real Estate, Christie's International Real Estate
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