Waterfront Duplex with Boat
For Sale
$2,750,000
139 Marina Avenue, Key Largo, FL 33037
Residential, Key Largo, FL
Property Size2,485 SF
Lot Size0.21 Acres
Price / SF$1,106
Days on Market63
Property Features for 139 Marina Avenue
General Information
Property type
Residential Multi Family
Property subtype
Duplex
Zoning
IS - Improved Subivision
Bedrooms
4
Bathrooms
5
Full bathrooms
4
Half bathrooms
2
Rooms
Bedroom 3, Bathroom 5, Bathroom 1, Bedroom 1, Bathroom 2, Bathroom 6, Bedroom 2, Bedroom 4, Bathroom 4, Bathroom 3
Parking features
Open
Security features
Security
Patio and Porch features
Porch
Pets allowed
Yes
Pool private
1
Interior features
Built-in Cabinets, Storage, Quartz Countertops
Exterior features
Chickee Hut, Fencing, Detached Guest Qtrs, Hot Tub, Lighting, Privacy Wall/Fence, Storage
Fencing
Fenced, Privacy
Appliances
Washer, Dryer, Dishwasher, Refrigerator, Range, Microwave, Disposal, Stainless Steel Appliance(s)
Subdivision
Port Largo (100.0)
View
Ocean
Directions
MM 100- Oceanside. Home is on the left- hand side of Marina Ave.
Standard status
Active
APN
00452700000000
Size
2,485 SF
Lot size
0.21 Acres
Taxes and HOA fees
Tax Year
2025
Tax Description
Lt 139 Port Largo-Key Largo Pb5-3 Or558-557 Or560-1023 Or795-373 Or825-1828 Or995-248 Or1454-234 Or1598-90 Or1651-2119 O
Tax Annual Amount
14394
HOA Fee
$300 Annually
Legal Description
Lt 139 Port Largo-Key Largo Pb5-3 Or558-557 Or560-1023 Or795-373 Or825-1828 Or995-248 Or1454-234 Or1598-90 Or1651-2119 O
Utilities
Heating system
Central
Cooling system
Central Air
Water front
1
Amenities
heated saltwater pool
concrete dock
boat lift
balconies
storage room
covered parking
tiki hut
impact windows and doors
electric gated entrance
Building Details
Year built
1980
Flooring type
Tile, Vinyl
Building materials
CBS
Roof type
Concrete
Additional Structures
Storage
Listing Agency:
American Caribbean Real Estate, Christie's International Real Estate
(305) 451-4078
Listed By:
Carlos Lorenzo · License #634298
(786) 251-4823
Added: Jun 24
Changed: Aug 19
Last Checked: Aug 25 at 11:06AM
MLS# 620392
Copyright © 2026 Florida Keys Board of REALTORS®. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
Investment Insights
Based on property information with market context.
This legally permitted duplex contains two adjoining townhome-style units within a 2,485-square-foot concrete residence. Each unit offers 2 bedrooms and 2.5 bathrooms, with private en-suite baths for every bedroom. The property has been renovated with updated kitchens, bathrooms, flooring, quartz countertops, tile and vinyl flooring, central heating, and central air. Impact-rated windows and doors, furnishings, storage, covered parking, and separate electric and water meters for each unit add practical functionality.
Set on 0.21 acres with 75 feet of waterfront, the property fronts an 80-foot-deep canal with ocean views and access to the Atlantic. Improvements include a concrete dock, 20,000-pound Neptune boat lift, heated saltwater pool, and tiki hut. The residence also features privacy fencing, an electric gated entrance on both sides, a concrete roof, and proximity to the private Port Largo homeowners' park. Zoning is IS - Improved Subivision.
Set on 0.21 acres with 75 feet of waterfront, the property fronts an 80-foot-deep canal with ocean views and access to the Atlantic. Improvements include a concrete dock, 20,000-pound Neptune boat lift, heated saltwater pool, and tiki hut. The residence also features privacy fencing, an electric gated entrance on both sides, a concrete roof, and proximity to the private Port Largo homeowners' park. Zoning is IS - Improved Subivision.
Key Highlights
- Legally permitted duplex with two 2‑bedroom, 2.5‑bathroom units
- 2,485 square feet on a 0.21‑acre lot
- 75 feet of waterfront along an 80‑foot‑deep canal
Property Analytics
Property Profile
Current Use
Lease Details
2
Residential units
Yes
Paved road access
Location Intelligence
Trade Area within ½ mile
533
Businesses Nearby
Explore this area
Business Placement
Demographics for 33037, FL
13,875
Population
10,494
Households
1.3
Avg Household Size
53
Median Age
41%
College-Educated
95%
High-School Grad
32.9 sq mi
ZIP Area
422
Density / Sq Mi
$80,911
Median Household Income
$40,641
Median Earnings
$1,896
Median Rent
$660,700
Median Home Value
Market
Vacancy Rate% for Multifamily in South region
Questions? Ask Rey
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Frequently Asked Questions
What type of property is this?
Duplex - Renovated two-unit waterfront property with private pool, dock, gated access, and separate utility meters.
Where is this duplex located?
The property is located at 139 Marina Avenue Key Largo, FL.
What is the asking price?
The asking price for this property is $2,750,000.
What are key features of this property?
This property features: Legally permitted duplex with two 2‑bedroom, 2.5‑bathroom units; 2,485 square feet on a 0.21‑acre lot; 75 feet of waterfront along an 80‑foot‑deep canal
