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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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+20

139 Marina Avenue

Key Largo, FL, 33037

Active

$2,750,000

139 Marina Avenue

Key Largo, FL, 33037

Active

$2,750,000

4

Bedrooms

6

Bathrooms

2,485 sqft

Living Area

1980

Year Built

$2,750,000Tour 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.

9,375

Lot Size (sqft)

$300

HOA / Yearly

24

Days on Market

Dock Score™

DockOnly
86
Excellent

What shaped this score

✓Ocean Access
✓Dock with boat lift
✓Bridge-free to bay & ocean
✓Fits boats up to ~70ft (est.)
Est. waterfront~75 ft

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

Dock & Water AccessMLS

Canal Front📝 20K-lb boat lift📝 deep water

AI Aerial Imagery Detection

Dock DetectedBoat Lift DetectedSeawall Detected

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 GeometryDockOnly

Canal Width

SFWMD Verified
79ft at dock
dock79 ft79797979

Measured every 10 ft along the canal boundary · perpendicular measurement

Will it turn around?

Up to 26 ft

Easy
handling

26–35 ft

Fits
with care

35–40 ft

Tight
(back-in)

Boats over 40 ft typically back in/out rather than turning here. Clear channel ≈ 53 ft with boats moored both sides (~13 ft per side for dock + beam). 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

Resort-style living just got better! Turnkey waterfront living in prestigious Port Largo. This rare turnkey property offers a legally permitted duplex with ocean views, exceptional flexibility, and strong income potential in one of Key Largo's most desirable waterfront communities. The residence features two side-by-side townhomes, each with 2 bedrooms and 2.5 bathrooms, for a total of 4 bedrooms, 4 full baths, and 2 half baths. Every bedroom includes a private en-suite bath, providing comfort and privacy for owners and guests. Situated on 75 feet of waterfront, the property boasts a brand-new heated saltwater pool, concrete dock, and 20,000-pound Neptune boat lift. The wide, 80-foot deep-water canal offers quick ocean access, placing you on the first channel to the Atlantic with ocean views and easy access to world-class fishing, diving, and boating. Built entirely of concrete and fully renovated, this home combines durability with modern coastal style. Tastefully updated kitchen, flooring, baths, and more, this home was thoughtfully designed. Located on sought-after Marina Avenue, just steps from the private Port Largo homeowners' park, you'll enjoy beautiful sunrise views from the balconies and the privacy of a nature preserve directly across the street. The ground level includes a spacious storage room, covered parking, and a spacious tiki hut perfect for outdoor living and entertaining. Additional features include all impact windows and doors, an electric gated entrance on both sides, separate electric and water meters for each unit, and furnishings and décor included. Ideal as an investment property, family compound, or waterfront retreat, this unique Port Largo opportunity delivers the best of the Florida Keys lifestyle. Call today. Owner/Agent.

Schedule a Showing

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

Select a date

Location

Key Largo, FL, 33037

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 American Caribbean Real Estate, Christie's International Real Estate via Florida Keys MLS

Last updated: 7/10/2026

© 2026 Florida Keys Board 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 (IDX) program of the Florida Keys Board of REALTORS®. Information is deemed reliable but not guaranteed and should be independently verified. 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
86
Excellent

What shaped this score

✓Ocean Access
✓Dock with boat lift
✓Bridge-free to bay & ocean
✓Fits boats up to ~70ft (est.)
Est. waterfront~75 ft

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: 10ft

Special Flood Hazard Area

View FEMA Flood Map →
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Loading nearby sandbars…

Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$550,000 down

%
Principal & Interest$14,269/mo
Property Tax (est. ~1.2%, varies by county)$2,750/mo
Home Insurance (est.)$250/mo
HOA Fees$25/mo
Total Monthly Payment$17,294
Loan Amount: $2,200,000Rate: 6.75%
Get Pre-Qualified

Estimated payments only. Actual rates and terms may vary.

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