57783 Morton Street

Marathon, FL 33050

$29,500,000

$3,411/ft²

10Beds

12Baths

8,648Sq ft

2025Year built

Single-family homeType

About this home

A Private Waterfront Estate at The Edge of the Gulf of America. Set on 3 secluded acres+/- along one of the most protected stretches of the Gulf of America, 57783 Morton Street is a newly completed estate of rare scale, privacy, and modern coastal design. Surrounded by water, sandscape, and tidal ponds alive with marine life, the property offers more than 200’+/- of direct water frontage and uninterrupted views across the open Gulf. Completed in 2025 by builder and developer Alderuccio Corporation, this resilient, elevated retreat is constructed entirely of concrete and impact glass and is designed for effortless indoor–outdoor living. With three distinct finished living spaces totaling approximately 10,000 SF+/-, the estate functions as a private resort offering privacy, recreation, and exceptional access to the best of the Florida Keys.

Features

Waterfront

Property details

Listing

MLS #: A11977067
Status: For sale
Listed on: Mar 5, 2026
Days on market: 158 days
Listing data updated: May 18, 2026

Interior

Beds: 10
Baths: 12
Living area: 8,648 ft²
Price per ft²: $3,411/ft²

Building & community

Type: Single-family home
Year built: 2025
County: Monroe

Lot & exterior

Lot size: 133,880 ft²
Waterfront: Yes

Days on market, price per ft² and the monthly HOA amount are calculated by this site from the MLS data shown; the association fee is normalized to a monthly figure.

True monthly cost

Mortgage (principal & interest): $149,168
Property taxes (est.): $27,042
Home insurance (est.): $600
Flood insurance (est.): —

Estimated total$176,810*/mo

* Some cost lines aren't available yet for this listing; the total shown is incomplete.

Based on 20% down, a 6.5% rate and a 30-year loan, plus this home's estimated Florida carrying costs. All figures are illustrative estimates — not quotes, not financial or insurance advice.

Sources: flood zone — FEMA National Flood Hazard Layer; mortgage, taxes and insurance figures — this site's own estimates; HOA / CDD — as reported for this listing.

What will this home really cost you?