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15760 Old State Road 4A, Sugarloaf Key, FL - photo 1

$19,750,000

15760 Old State Road 4A

Sugarloaf Key, FL 33042

Estimated payment $100,442/month

HOA not listed, not included · estimated tax · estimated insurance · 20% down, 6.5%, 30 yr

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6Beds
7Baths
4,402Sq Ft
$4487Price/Sq Ft

Preferred partner

Kinsfolk Realty

Kinsfolk Signature Realty

Powered by Hometrino

(813) 602-0498

Highlights

Built in 1976
232,174 sqft Lot

About This Home

RARE PRIVATE SANDY BEACH OCEANFRONT ESTATE 30 MINUTES TO KEY WESTA 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.

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Facts & features

Bedrooms & bathrooms

  • •Bedrooms:6
  • •Bathrooms:7 (6 full, 1 half)
  • •Full bathrooms:6
  • •Half bathrooms:1

Heating

  • •Has Heating:Yes

Interior area

  • •Total structure area:4,402 sqft
  • •Total interior livable area:4,402 sqft

Parking

  • •Parking features:N/A
  • •Garage spaces:0
  • •Has attached garage:No

Lot

  • •Size:232,174 sqft

Details

  • •Parcel number:N/A

Type & style

  • •Home type:Multi Family
  • •Property subtype:Residential

Materials

  • • N/A

Condition

  • •Year built:1976

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Price history

DateEventPrice
10/30/2026Listed for sale$19,750,000$4487/sqft

Listing Agent

Lisa Swanson

The Agency Florida Keys

Brokerage Phone: 305-916-1105

Source: Florida Keys MLS · MLS #617534

Data Powered by Home Junction, Inc.

Nearby

Beaches

Sugarloaf Beach

0.2 mi

Boca Chica Beach

8.1 mi

Boca Chica Nude Beach

8.4 mi

Nearby amenity locations include data © OpenStreetMap contributors.