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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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This website complies with the Fair Housing Act. We do not discriminate on the basis of race, color, religion, sex, national origin, familial status, or disability.

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+20

151 10th St

Marathon, FL, 33051

Active

$849,000

151 10th St

Marathon, FL, 33051

Active

$849,000

2

Bedrooms

2

Bathrooms

952 sqft

Living Area

1961

Year Built

$849,000Tour 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.

4,369

Lot Size (sqft)

22

Days on Market

Dock Score™

DockOnly
85
Excellent

What shaped this score

✓Ocean Access
✓Dock present
✓Bridge-free to bay & ocean
✓Fits boats up to 40ft

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

Dock & Water AccessMLS

WF/Ocean AccessCanal FrontOcean Access

AI Aerial Imagery Detection

Dock DetectedSeawall 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.

Canal WidthDockOnly

At the dock

County parcel data
92ft
dock92 ft

Single measurement at the dock · width variation along the canal not yet available

Measured perpendicular from this parcel's waterfront edge to the parcel directly across the canal, using surveyed county GIS boundaries.

Will it turn around?

Up to 22 ft

Easy
handling

22–30 ft

Fits
with care

30–35 ft

Tight
(back-in)

Boats over 35 ft can't turn around here. Back in/out only. Clear channel ≈ 46 ft once boats are docked both sides (Monroe rules cap each side ~23 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

Welcome to this 2-bedroom waterfront home in Key Colony Beach offering direct canal frontage and classic island appeal. Built in 1961 and updated, this one story half duplex blends low maintenance living with functional waterfront access. Interior highlights include tile flooring throughout, ceiling fans, window treatments, and a comfortable layout with two full bathrooms and well proportioned bedrooms across approximately 952 square feet. Home Constructed using CBS (Concrete block & Stucco) for durability. Waterfront and exterior features: • Direct canal frontage with seawall • Screened porch for outdoor dining • Approximately 4,125 sq ft lot • One car garage • Paver driveway • Off street and guest parking • Front side impact windows/ Back Accordion shutters • Monitored security • 40ft Boat Dock (Seawall has permit and is being redone in April 2026) Ideal for boating enthusiasts seeking convenient canal access in Key Colony Beach. Located in Monroe County near local dining, marinas, and island amenities, this property offers an opportunity to enjoy the Florida Keys lifestyle in a manageable waterfront setting.

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, 33051

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 EXP Realty South LLC via MIAMI REALTORS®

Last updated: 3/5/2026

© 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
85
Excellent

What shaped this score

✓Ocean Access
✓Dock present
✓Bridge-free to bay & ocean
✓Fits boats up to 40ft

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: 7ft

Special Flood Hazard Area

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

Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$169,800 down

%
Principal & Interest$4,405/mo
Property Tax (est. ~1.2%, varies by county)$849/mo
Home Insurance (est.)$250/mo
Total Monthly Payment$5,504
Loan Amount: $679,200Rate: 6.75%
Get Pre-Qualified

Estimated payments only. Actual rates and terms may vary.

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