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For sale
$19,750,000
6beds
4,402sqft

15760 Old State Road 4a, Sugarloaf, FL 33042

6beds
4,402sqft
Multi Family
Built in 1976
$4,487/sqft

What's special

Rare private sandy beach

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.

320 days
1,698
57
Source: FLKMLS,MLS#: 617534MLS Logo
Travel times

Living Room

Kitchen

Dining Room

Zillow last checked:

Listing updated:

Listed by:

Lisa Swanson 305-924-3777,

The Agency Florida Keys

Source: FLKMLS,MLS#: 617534MLS Logo

Facts & features

Interior

Bedrooms & bathrooms
  • Bedrooms: 6
  • Bathrooms: 7
  • Full bathrooms: 6
  • 1/2 bathrooms: 1
Heating
  • Has Heating (Unspecified Type)
Cooling
  • Central Air
Appliances
  • Included: Washer, Dryer, Dishwasher, Refrigerator, Range, Oven, Microwave, Freezer
Features
  • Storage, Quartz Countertops
  • Flooring: Tile
Interior area
  • Total structure area: 4,402
  • Total interior livable area: 4,402 sqft
Video & virtual tour

Property

Parking
  • Parking features: Open
  • Has garage: Yes
  • Has uncovered spaces: Yes
Features
  • Patio & porch: Open Porch/Balcony
  • Exterior features: Sandy Beach
  • On waterfront: Yes
Lot
  • Size: 5.33 Acres
Details
  • Parcel number: 00119480000400
  • Zoning: SRL - Sub Urban Residential District Limited

Construction

Type & style
  • Home type: MultiFamily
  • Property subtype: Multi Family
Materials
  • CBS, Frame
Condition
  • Year built: 1976

Community & HOA

Community
  • Features: Bike Paths
  • Security: Security Gate, On Premises System, Fire Sprinkler System
  • Subdivision: Sugarloaf Beach (17.0)
HOA
  • Has HOA: No
  • Services included: None
Location
  • Region: Sugarloaf

Financial & listing details

  • Price per square foot: $4,487/sqft
  • Annual tax amount: $22,269
  • Date on market: 12/1/2025

Price history

DateEventPrice
12/1/2025Listed for sale$19,750,000$4,487/sqft
Source: Key West AOR #617534 Report a problem

Public tax history

Tax history is unavailable.

Monthly payment

Est. payment
$121,666/mo
Principal & interest
$108170
Property taxes
$13496
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Estimated market value

Not available

Estimated sales range

Not available

Not available

Climate risks

Explore flood, wildfire, and other predictive climate risk information for this property on First Street®️.

Neighborhood: 33042

Nearby schools

Sugarloaf School
Grades PK-8 • 3.8 miles
6/10
GreatSchools® Rating
Test Score Rating
5/10
Student Progress Rating
6/10
Key West High School
Grades 9-12 • 14.4 miles
3/10
GreatSchools® Rating
Test Score Rating
3/10
College Readiness Rating
5/10
Student Progress Rating
2/10