DockOnly™

The only MLS search built exclusively for boaters. Find your dock home.

Company

  • About
  • Contact
  • Blog

Search

  • By City
  • By County
  • Dockominiums

Services

  • Marine Services
  • Dock Builders
  • Find Contractors

For Agents

  • Become a Partner
  • Referral Program
  • Featured Listings

Legal

  • Privacy Policy
  • Terms of Use
  • MLS Compliance

© 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

Equal Housing OpportunityEqual Housing Opportunity

© 2026 Miami Association of REALTORS®. IDX information provided exclusively for personal, non-commercial use. Listing data last updated every 30 minutes.

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.

DockOnly™
SearchMarketsDockominiums
SearchMarketsDockominiumsSaved
Real Estate Agents
Home
SearchSaved
865 50th Street Gulf photo 1
865 50th Street Gulf photo 2
865 50th Street Gulf photo 3
865 50th Street Gulf photo 4
865 50th Street Gulf photo 5
865 50th Street Gulf photo 6
865 50th Street Gulf photo 7
865 50th Street Gulf photo 8
865 50th Street Gulf photo 9
865 50th Street Gulf photo 10
865 50th Street Gulf photo 11
865 50th Street Gulf photo 12
865 50th Street Gulf photo 13
865 50th Street Gulf photo 14
865 50th Street Gulf photo 15
865 50th Street Gulf photo 16
865 50th Street Gulf photo 17
865 50th Street Gulf photo 18
865 50th Street Gulf photo 19
865 50th Street Gulf photo 20
865 50th Street Gulf photo 21
865 50th Street Gulf photo 22
865 50th Street Gulf photo 23
865 50th Street Gulf photo 24
865 50th Street Gulf photo 25
1 / 25
865 50th Street Gulf
25 photos
865 50th Street Gulf photo 2
865 50th Street Gulf photo 3
865 50th Street Gulf photo 4
865 50th Street Gulf photo 5
+20

865 50th Street Gulf

Marathon, FL, 33050

Active

$4,490,000

865 50th Street Gulf

Marathon, FL, 33050

Active

$4,490,000

5

Bedrooms

5

Bathrooms

3,826 sqft

Living Area

2022

Year Built

Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$898,000 down

%
Principal & Interest$23,298/mo
Property Tax (est. ~1.2%, varies by county)$4,490/mo
Home Insurance (est.)$250/mo
Total Monthly Payment$28,038
Loan Amount: $3,592,000Rate: 6.75%
Get Pre-Qualified

Estimated payments only. Actual rates and terms may vary.

Comparable Sales

$4,490,000Tour 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.

7,128

Lot Size (sqft)

53

Days on Market

Dock Score™

DockOnly
89
Excellent

What shaped this score

✓Ocean Access
✓Dock with boat lift
✓Bridge-free to bay & ocean
✓Fits boats up to 50ft

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

Dock & Water AccessMLS

Ocean 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
65ft
dock65 ft64.86465

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.

Will it turn around?

Up to 16 ft

Easy
handling

16–21 ft

Fits
with care

21–24 ft

Tight
(back-in)

Boats over 24 ft can't turn around here — back in/out only. Clear channel ≈ 32 ft once boats are docked both sides (Monroe rules cap each side ~16 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

Experience exceptional waterfront living in this 2022 built home featuring 5 bedrooms and 4.5 bathrooms, perfectly positioned on the Gulf side with breathtaking water views. The main level offers a bright and open layout designed for both comfort and entertainment. A spacious modern kitchen showcases elegant cabinetry, quartz countertops with a striking waterfall edge, and premium stainless-steel appliances. Large dining and living areas, complete with a stylish wet bar, creating the perfect space for hosting and relaxing. This level also includes a convenient half bath and a utility room with laundry. Upstairs, the second-floor features five generously sized bedrooms and four full bathrooms. The expansive primary suite offers ample space, a beautifully designed modern bathroom, and a private porch where you can enjoy breathtaking sunset views over the water. Two additional bedrooms share a Jack-and-Jill bathroom and provide access to a balcony overlooking the pool and waterfront. A fourth bedroom, currently used as a home office, is located near another full hallway bathroom. The fifth bedroom is a private suite with its own ensuite bathroom. Featuring a large patio area ideal for entertaining, a spacious pool, and a 55-foot dock, making this property perfect for boating enthusiasts and waterfront relaxation. Additional highlights include a large two-car plus garage with ample storage space. Boat Lift plans have already been approved and permits granted and available.

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 AmeriFirst Realty

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
89
Excellent

What shaped this score

✓Ocean Access
✓Dock with boat lift
✓Bridge-free to bay & ocean
✓Fits boats up to 50ft

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: 9ft

Special Flood Hazard Area

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

Similar Listings

145 Venetian Drive$3.4M

145 Venetian Drive

Islamorada, FL

4 4 3,182 sqft

Listed by Langley Knight Gardner Islamorada

231 E Shore Drive Unit 2$4.3M

231 E Shore Drive Unit 2

Key West, FL

5 4,103 sqft

Listed by Serhant

142 Guilford Ct$5.5M

142 Guilford Ct

Tavernier, FL

5 6 3,458 sqft

Listed by American Caribbean Real Estate

44 W Plaza Del Lago$4.8M

44 W Plaza Del Lago

Lower Keys, FL

4 5 4,464 sqft

Listed by Pine River Realty, LLC.

231 E Shore Drive Unit 6$4.4M

231 E Shore Drive Unit 6

Key West, FL

5 4,103 sqft

Listed by Serhant

75433 Overseas Hwy$4.0M

75433 Overseas Hwy

Islamorada, FL

4 4 2,624 sqft

Listed by Propertio

Swipe or use arrows to see more