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

$19,750,000


6

Beds


7

Baths


4,402

Sq Ft


Multi-Family


Virtual Tour

Active

Listed by

Lisa Swanson

The Agency Florida Keys

Last updated:

July 8, 2026, 03:47 PM

MLS#

617534

Source:

FL FKBOR

About This Home

15760 Old State Road 4a

Rare Private Sandy Beach - Oceanfront Estate with endless open ocean views, just 30 minutes to Key West! This is a once-in-a-lifetime opportunity to own over 5 acres of sprawling oceanfrontage on exclusive Sugarloaf Beach, with over 500 feet of pristine sandy shoreline. Zoned Sub Urban Residential, this rare estate offers unmatched potential--create a private luxury compound, a boutique resort rental, or VIP luxury retreat. One of the few properties in the Lower Keys where lucrative nightly rentals are allowed with Special Vacation Rental Permits, this remarkable estate provides exceptional flexibility with ample room to expand. This estate has two existing Single Family Residences - the main house has 4 bedrooms 4 bathrooms and the second house has 2 bedrooms, 2 bathrooms and 1 half bath. Currently set up as two luxury nightly vacation rental homes! New 430-foot dock with stainless steel pilings, stainless steel support beams and composite decking. The 5-foot draft welcomes larger boats! Arrange private charter pick ups at the dock for your guests. Enjoy world-class boating, fishing and diving on your doorstep. American Shoal Lighthouse is only 5 miles directly in front of this spectacular property. Located on highly desirable Lower Sugarloaf Key in the Lower Keys, only 30 minutes to Key West, this hidden sanctuary is an unmatched offering for a discerning buyer seeking privacy, scale, and fantastic re-development potential. Nothing comparable exists in the area! Sugarloaf Beach remains one of the most coveted and rare stretches of beachfront in the Florida Keys. Whether you envision a secluded tropical retreat, a boutique luxury rental, or a visionary new oceanfront compound, this property is incredible with amazing potential to redefine with your personal touch. Opportunities like this come once in a lifetime. Take your private tour today and unlock the full potential of this iconic oceanfront estate!

Home Facts

Multi-Family

7 Baths

6 Bedrooms

Built in 1976

Price Summary

19,750,000

$4,486 per Sq. Ft.

MLS #:

617534

Last Updated:

July 8, 2026, 03:47 PM

Added:

7 month(s) ago


Rooms & Interior

Bedrooms

Total Bedrooms:

6

Bathrooms

Total Bathrooms:

7


Structure

Structure

Building Area:

4,402 Sq. Ft.

Year Built:

1976


Lot

Lot Size (Sq. Ft):

232,174


Finances & Disclosures

Finances

Price:

$19,750,000

Price per Sq. Ft:

$4,486 per Sq. Ft.

Source:FL FKBOR
The information being provided by Florida Keys Board Of REALTORS®, Inc. is for the consumer’s personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The information is deemed reliable but not guaranteed and should therefore be independently verified. © 2026 Florida Keys Board Of REALTORS®, Inc. All rights reserved. FL FKBOR Member Broker: Brian Schmitt

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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.