Main Key, Barnes Sound, Key Largo, FL 33037 (MLS# 616391)

Main Key, Barnes Sound, Key Largo, FL 33037

New Listing

$3,995,000

Property Type: Vacant Land Lot Size (sq. ft.): 6,337,980 Status: Active

Current Price: $3,995,000 List Date: 8/24/2026 Last Modified: 8/24/2026

Overview

Description

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 ... (Read more)

Listing Details MLS# 616391

Location, Tax & Legal

Street Name: Main Key, Barnes Sound
Key/Island: Key Largo
State/Province: FL
Zip Code: 33037
County: Monroe
Subdivision: Ocean Reef Club (905.0)
Area: 28 - Key Largo N of MM 107 Incl Ocean Reef

Contract Information

Listing Board: Florida Keys
ROGO Exempt: Yes
Limited Representation: No
As is Rght to Inspct: Yes
Potential Short Sale: No
Bank Owned: No
Species List: Yes

General Property Description

Realtor.COM Type: Vacant Land
Waterfront: Yes
Control Depth: 6
Lot Dimensions: 145.5 Acres
Lot SqFt: 6337980
Lot Sqft Source: Survey
Total Lots: 2
Survey Available: Yes

Miscellaneous Info

Mobile Home Lot: No

Dockage

Dock Permit: Yes

More Information

Financial Status

Bank Owned: No
Potential Short Sale: No

Property Features

Tax Exemptions: None Waterfront: Beach Front; Oceanfront Waterview: Ocean View Existing Utilities: None BuildingPermit: No Permit Land Size: 10 or more Acres Terms: Buyer Obtain Finance Title: Title Ins - Buyer

Listing Office: American Caribbean Real Estate, Christie's International Real Estate

Last Updated: August - 24 - 2026

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