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

Blue Mar Real Estate Group

Blue Mar Real Estate Group Inc.

Licensed Florida Real Estate Broker

DBPR License CQ1018554

Listing data provided by Miami Realtors MLS via Bridge Data Output. Information deemed reliable but not guaranteed. Dock Score™ is a DockOnly.com rating and is not provided by or affiliated with the MLS or listing broker. NOAA chart data is public domain and for reference only — not for navigation. Full MLS Compliance

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+20

57783 Morton Street

Marathon, FL, 33050

Active

$29,500,000

57783 Morton Street

Marathon, FL, 33050

Active

$29,500,000

10

Bedrooms

13

Bathrooms

8,648 sqft

Living Area

2025

Year Built

Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$5,900,000 down

%
Principal & Interest$153,069/mo
Property Tax (est. ~1.2%, varies by county)$29,500/mo
Home Insurance (est.)$250/mo
Total Monthly Payment$182,819
Loan Amount: $23,600,000Rate: 6.75%
Get Pre-Qualified

Estimated payments only. Actual rates and terms may vary.

Comparable Sales

$29,500,000Tour 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.

133,880

Lot Size (sqft)

74

Days on Market

Dock Score™

DockOnly
75
Good

What shaped this score

✓Ocean Access
✓Dock present
✓Bridge-free to bay
✓Fits boats up to ~50ft (est.)

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

Dock & Water AccessMLS

Ocean AccessNavigable WaterSeawall

AI Aerial Imagery Detection

Dock DetectedSeawall DetectedDeep Water Indicators~43-57 ft dock

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.

Canal WidthDockOnly

At the dock

County parcel data
374ft
dock374 ft373.9366373

Width sampled every 10 ft from dock · perpendicular measurement

Measured perpendicular from this parcel's waterfront edge to the parcel directly across the canal, using surveyed county GIS boundaries. Multiple waterfront edges detected (corner lot or dual frontage); reported value is the widest — verify with the listing agent.

Will it turn around?

Up to 93 ft

Easy
handling

93–124 ft

Fits
with care

124–143 ft

Tight
(back-in)

Boats over 143 ft can't turn around here — back in/out only. Clear channel ≈ 187 ft once boats are docked both sides (Monroe rules cap each side ~93 ft). Wide-beam yachts need the upper end of each range.

Navigation RouteDockOnly

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

Description

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.

Schedule a Showing

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

Select a date

Location

Marathon, FL, 33050

No price history available for this property.

Listing courtesy of Bespoke Real Estate Florida LLC

Last updated: 6/16/2026

© 2026 Miami Association 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 program of the Miami Association of REALTORS®. Information is deemed reliable but not guaranteed. 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
75
Good

What shaped this score

✓Ocean Access
✓Dock present
✓Bridge-free to bay
✓Fits boats up to ~50ft (est.)

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 AE
BFE: 11ft

Special Flood Hazard Area

View FEMA Flood Map →
Loading nearby marinas…
Loading nearby sandbars…

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