Private Waterfront Island
Main Key Barnes Sound Key Largo, FL 33037
For Sale
$4,095,000
LAND - Key Largo, FL
Lot Size145.50 Acres
Days on Market331
Property Features for Main Key Barnes Sound
General Information
Property type
Land
Property subtype
Other
Zoning
OS - Offshore Island Dist
Standard status
Active
APN
00091640-000000
Lot size
145.50 Acres
Taxes and HOA fees
Tax Year
2024
Tax Description
See Documents Tab
Tax Annual Amount
97
Utilities
Water front features
Beach Front, Ocean Front
Water front
1
Listing Agency:
American Caribbean Real Estate, Christie's International Real Estate
(305) 664-4966
Listed By:
KELLY K SHAW PA · License #0583328
(305) 664-7303
Added: Sep 3, 2025
Changed: Jul 27
Last Checked: Jul 30 at 10:06AM
MLS# 616391
Copyright © 2026 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.
Investment Insights
Based on property information with market context.
This offering is for a private waterfront island land asset described as Main Key, totaling 145.5 acres with over a mile of pristine white sandy beach on its east shoreline in Barnes Sound. The property also features a western and southern shoreline of mangroves extending more than four miles, described in the remarks as reaching 30 to 50 feet tall.
The remarks indicate ownership is associated with a TIIF Deed. A dock permit with lift, platform, and a mooring slip is noted for the SE beach off the old homesite, and a second permit is being applied for on the south side of Main Key, described as including a 135 ft dock with a 40 ft platform and seven heavy pilings to moor a large vessel up to 100 ft.
The information provided also references an upland area of 12 acres where a substantial structure could be built, and it notes that the island has historical structures on the SE Government Lot area, along with the establishment of a tide station by USGS later operated by NOAA.
The remarks indicate ownership is associated with a TIIF Deed. A dock permit with lift, platform, and a mooring slip is noted for the SE beach off the old homesite, and a second permit is being applied for on the south side of Main Key, described as including a 135 ft dock with a 40 ft platform and seven heavy pilings to moor a large vessel up to 100 ft.
The information provided also references an upland area of 12 acres where a substantial structure could be built, and it notes that the island has historical structures on the SE Government Lot area, along with the establishment of a tide station by USGS later operated by NOAA.
Key Highlights
- 145.5‑acre private island with over a mile of oceanfront pristine white sandy beaches on the east shoreline (Barnes Sound, Monroe County, FL).
- More than 4 miles of mangroves on the western and southern shoreline, including a rookery with tropical birds, gamefish, shellfish, and sea mammals.
- Includes 12 upland acres where a substantial structure could be built with no ROGO requirements.
Property Analytics
Property Profile
Location Intelligence
Current Use
Frequently Asked Questions
What type of property is this?
Waterfront Land - Large private island offers extensive sandy beach frontage and mangrove shoreline, with existing dock infrastructure permitting mentioned in the remarks.
Where is this waterfront land located?
The property is located at Main Key Barnes Sound Key Largo, FL.
What is the asking price?
The asking price for this property is $4,095,000.
What are key features of this property?
This property features: 145.5‑acre private island with over a mile of oceanfront pristine white sandy beaches on the east shoreline (Barnes Sound, Monroe County, FL).; More than 4 miles of mangroves on the western and southern shoreline, including a rookery with tropical birds, gamefish, shellfish, and sea mammals.; Includes 12 upland acres where a substantial structure could be built with no ROGO requirements.
