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© 2026 DockOnly™. All rights reserved.

DockOnly™ and Dock Score™ are trademarks of Blue Mar Real Estate Group Inc.

Blue Mar Real Estate Group Inc., Licensed Florida Real Estate Broker

Blue Mar Real Estate Group Inc.

Licensed Florida Real Estate Broker · DBPR License CQ1018554

4000 Ponce De Leon Blvd, Suite 470, Coral Gables, FL 33146

[email protected]

Listing data is provided by participating Multiple Listing Services and is deemed reliable but not guaranteed. Each listing's MLS source and its required disclosures appear with that listing. Dock Score™ is a DockOnly.com rating and is not provided by or affiliated with any MLS or listing broker. NOAA chart data is public domain and for reference only, not for navigation. Full MLS Compliance

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15760 Old State Road 4A photo 1
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+20

15760 Old State Road 4A

Sugarloaf Key, FL, 33042

Active

$19,750,000

15760 Old State Road 4A

Sugarloaf Key, FL, 33042

Active

$19,750,000

6

Bedrooms

7

Bathrooms

4,402 sqft

Living Area

1976

Year Built

$19,750,000Tour the dockSchedule a Showing
Navigation note: Navigation routes show the shortest mapped path to open water. A vessel taller than the binding bridge clearance may still reach open water via a longer alternate route that we don't currently map. Verify navigability with a local captain or surveyor before relying on it.

232,174

Lot Size (sqft)

231

Days on Market

Dock Score™

DockOnly
79
Good

What shaped this score

✓Ocean Access
✓Dock present
✓Fits boats up to 430ft
✓Bridge-free to ocean
·Draft not independently verified

DockOnly.com rating, not provided by the MLS or listing broker.

Dock & Water AccessMLS

Oceanfront

AI Aerial Imagery Detection

Dock DetectedDeep Water Indicators

Detected by AI from open-source aerial mapping imagery and may not reflect current conditions. This information was not provided by the MLS or listing broker. Always verify dock infrastructure with the listing agent.

Navigation RouteDockOnly

Data sources: SFWMD AHED waterway polygons · FHWA National Bridge Inventory 2024 · Not provided by the MLS or listing broker.

Description

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!

Schedule a Showing

See the property and tour the dock. A licensed waterfront specialist will arrange your private showing.

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Location

Sugarloaf Key, FL, 33042

No price history available for this property.

Displayed by Blue Mar Real Estate Group Inc., Licensed Florida Real Estate Broker (DBPR CQ1018554) · [email protected]

Listing courtesy of The Agency Florida Keys via Florida Keys MLS

Last updated: 6/29/2026

© 2026 Florida Keys Board of REALTORS®, Inc. All rights reserved. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange (IDX) program of the Florida Keys Board of REALTORS®. Information is deemed reliable but not guaranteed and should be independently verified. All properties are subject to prior sale, change, or withdrawal.

IDX information is provided exclusively for consumers' personal, non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Dock Score™

DockOnly
79
Good

What shaped this score

✓Ocean Access
✓Dock present
✓Fits boats up to 430ft
✓Bridge-free to ocean
·Draft not independently verified

DockOnly.com rating, not provided by the MLS or listing broker.

Nearest Bridge Clearances

Florida Keys, critical for tall/large vessels

No bridge data available for this location.
FEMA Flood Zone VE
BFE: 12ft

Coastal High Hazard

View FEMA Flood Map →
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Loading nearby sandbars…

Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$3,950,000 down

%
Principal & Interest$102,478/mo
Property Tax (est. ~1.2%, varies by county)$19,750/mo
Home Insurance (est.)$250/mo
Total Monthly Payment$122,478
Loan Amount: $15,800,000Rate: 6.75%
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Estimated payments only. Actual rates and terms may vary.