15760 Old State Road 4a, Sugarloaf Key, FL

$19,750,000

Previous Next

6

Beds

7

Baths

4,402

Square feet

5.33

Acres

About 15760 Old State Road 4a

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.

Features of 15760 Old State Road 4a

MLS® # 617534
Price $19,750,000
Bedrooms 6
Bathrooms 7.00
Full Baths 6
Half Baths 1
Square Footage 4,402
Acres 5.33
Year Built 1976
Type Residential
Sub-Type Multi-Units
Status Active

Community Information

Address 15760 Old State Road 4a
Area 06 - Bay Point to Sugarloaf
Subdivision Sugarloaf Beach (17.0)
City Sugarloaf Key
County Monroe
State FL
Zip Code 33042

Amenities

Amenities Bike Paths
Utilities FKAA, Aerobic System
Parking Garage, Open Parking
View Ocean View
Is Waterfront Yes
Waterfront Oceanfront
Has Pool No

Interior

Interior Features Split Bedroom, Fire Sprinkler, Smoke Alarms, Storage, Quartz Countertops
Appliances Washer, Dryer, Dishwasher, Refrigerator, Range, Oven, Microwave, Freezer
Heating Central
Cooling Central Air
Fireplace No
Has Basement No

Exterior

Exterior Features Sandy Beach
Lot Description 5 Less Than 10 Acres
Windows Impact Rstnce Window, Impact Rstnce Doors
Roof Metal Roof
Construction CBS, Frame

Additional Information

Date Listed December 1st, 2025
Days on Market 269
Zoning SRL - Sub Urban Residential District Limited
Short Sale No
RE / Bank Owned No

Listing Details

AgentLisa Swanson
OfficeThe Agency Florida Keys

Listing Map

Request a Showing

Provide a valid email address.
When would you like to view this property?