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6 Beds
7 Baths
4,402 sqft

$19,750,000

15760 Old State Road 4A, Sugarloaf Key FL, 33042

Price per sqft$4,486.60
Built in1976
Property size4,402 sqft
Property typeMulti-family

Overview

Active

Listed Dec 1, 2025

Updated 2 weeks ago

RARE PRIVATE SANDY BEACH | OCEANFRONT ESTATE | 30 MINUTES TO KEY WEST A truly extraordinary opportunity on coveted Sugarloaf Beach--over 5 acres of private oceanfront property offering endless open-water views, exceptional privacy and a rare natural sandy beach in the Lower Keys. This remarkable estate includes two County-recognized residential dwelling units with an established history of permitted vacation-rental use, creating a valuable combination of existing residential rights, income potential and future redevelopment opportunity. The main residence offers 4 bedrooms and 4 bathrooms, complemented by a second 2-bedroom, 2.5-bath residence, currently configured as luxury vacation rentals. A newly reconstructed 430-foot dock with stainless-steel pilings, stainless-steel support beams and composite decking provides exceptional boating access, with approximately 5-foot draft accommodating larger vessels. World-class fishing, diving and boating begin at your doorstep, with American Shoal Lighthouse approximately five miles offshore. A recent professional environmental and development review identifies existing developed and disturbed areas as particularly valuable for future redevelopment and notes potential to enlarge, replace or substantially reconfigure the two existing residences, subject to applicable approvals. The adjoining vacant parcel also contains a preliminary upland opportunity area identified for further development evaluation, adding another compelling dimension to this exceptional offering. With its private beach, expansive open-water setting, established residences, vacation-rental history and substantial waterfront infrastructure, this is a rare opportunity to create an extraordinary private compound or reimagine an iconic oceanfront retreat in one of the Florida Keys' most secluded settings. Future development and redevelopment are subject to applicable governmental approvals, environmental requirements and permitting.

$131,397/mo

Est. mortgage payment based on a $19,750,000 home price.

All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.

Additional information

MLS® ID
617534

Interior Features

Bedrooms
6
Bathrooms
7
Cooling
Yes
Heating
Yes
Basement
No

Exterior Features

Lot Size
5.33 Acres

Other Property Details

Taxes
$22,270
Tax Frequency
Annually
Garage
Yes
View
Yes
Pets Allowed
Yes
Waterfront
Yes
MLS provider logo

Listed by Lisa Swanson with The Agency Florida Keys
Listing Contact: 305-924-3777 

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.

©2026 Florida Keys Board of REALTORS® all rights reserved.

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

 

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