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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

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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+14

6099 Overseas Hwy 55W

Marathon, FL, 33050

Active

$365,000

6099 Overseas Hwy 55W

Marathon, FL, 33050

Active

$365,000

1

Bedrooms

1

Bathrooms

—

Living Area

2022

Year Built

Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$73,000 down

%
Principal & Interest$1,894/mo
Property Tax (est. ~1.2%, varies by county)$365/mo
Home Insurance (est.)$250/mo
HOA Fees$247/mo
Total Monthly Payment$2,756
Loan Amount: $292,000Rate: 6.75%
Get Pre-Qualified

Estimated payments only. Actual rates and terms may vary.

Comparable Sales

$365,000Tour 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.

1,146

Lot Size (sqft)

$247

HOA / Monthly

78

Days on Market

Dock Score™

DockOnly
69
Good

What shaped this score

✓Ocean Access
✓No fixed bridges
✓Dock with boat lift
✓Fits boats up to ~20ft (est.)

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

Dock & Water AccessMLS

Canal FrontCanal Width 1-80 FeetNo Fixed BridgesOcean Access

AI Aerial Imagery Detection

Dock DetectedBoat Lift DetectedDeep Water Indicators~17-23 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
497ft
dock497 ft496.5487495

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 124 ft

Easy
handling

124–165 ft

Fits
with care

165–190 ft

Tight
(back-in)

Boats over 190 ft can't turn around here — back in/out only. Clear channel ≈ 248 ft once boats are docked both sides (Monroe rules cap each side ~124 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

Price recently reduced. Canal-front lot in Key by the Sea, located at 6099 Overseas Highway, Unit 55W in Marathon, Florida. This waterfront property features a newly rebuilt dock and installed boat lift, offering immediate boating access to open water. A 2022 travel trailer is included as personal property, providing immediate use or flexibility while planning future improvements. Seller states the property may qualify for a ROGO exemption. Buyer to verify building rights, permitting, and development potential with the City of Marathon. Located in a waterfront community near marinas, restaurants, and shopping, this property offers convenient access to the Florida Keys lifestyle. Strong opportunity for investors, boaters, or buyers seeking canal frontage with existing dock infrastructure and flexible use potential.

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 Island Breeze Realty, LLC

Last updated: 6/19/2026

© 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
69
Good

What shaped this score

✓Ocean Access
✓No fixed bridges
✓Dock with boat lift
✓Fits boats up to ~20ft (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: 8ft

Special Flood Hazard Area

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

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