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    139 Marina Ave Key Largo, FL 33037

    New
    For Sale
    $2,695,000

    Multi-family - Key Largo, FL

    Type:Multi Family
    Property size:
    2,485 SF
    Lot size:
    0.22 Acres
    Days on Market:
    7
    Last Refresh:
    Dec 13 at 9:06 pm

    Property Features for 139 Marina Ave

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Multi Family
    Standard status
    Active
    Spa
    1
    Zoning
    R2 - Residential Duplex
    Rooms
    Bathroom 1, Bathroom 2, Bathroom 3, Bathroom 4, Bathroom 5, Bedroom 1, Bedroom 2, Bedroom 3, Bedroom 4
    Bedrooms
    4
    Bathrooms
    6
    APN
    00452700-000000
    Parking features
    Covered, Open
    Interior features
    Smoke Alarms, Brazilian Quartzite Countertops, Quartz Countertops, Storage
    Exterior features
    Chickee Hut, Storage, Privacy Wall/Fence, Lighting, Hot Tub
    Fencing
    Fenced, Privacy
    Appliances
    Dishwasher, Dryer, Garbage Disposer, Microwave, Range, Refrigerator, Washer
    Size
    2,485 SF
    Lot size
    0.22 Acres

    Taxes and HOA fees

    Expense value
    300
    Expense
    Home Owner Assessments Fee
    Expense freq.
    Annually

    Utilities

    Water front features
    Canal Front, Waterfront
    Water front
    1

    Building Details

    Year built
    1980
    Floors in Building
    3
    Flooring type
    Tile, Vinyl
    Roof type
    Concrete
    Architectural style
    Other
    Additional Structures
    Storage

    American Caribbean Real Estate (305) 451-4078 [email protected]

    Listing agent Carlos Lorenzo (305) 451-4078 License #634298

    Listing date Dec 7, 2025

    MLS# 617374 Listing URL

    Copyright © 2025 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.

    Overview

    Canal Front Duplex with Ocean Views

    This canal front property in Port Largo features a legal duplex with ocean views. Each side-by-side townhome includes 2 bedrooms and 2.5 bathrooms, with all bedrooms designed as en-suites. The property has 75 feet of water-frontage, including a concrete dock equipped with a 20,000 lbs boat lift. The 80 ft wide deep-water canal provides direct ocean access. Located on the first channel leading to Key Largo waters, it is suited for boating, fishing, and diving. The concrete structure has been renovated and is located on Marina Ave, near the homeowner's park. Positioned across from a nature preserve, the home ensures tranquility. Downstairs, there is a 760 sq ft storage area and a Tiki Hut. Plans for a concrete swimming pool were previously approved. An electric gated entry enhances security, and covered parking adds convenience. Each side has separate electric and water meters. The property, situated on a 0.22-acre lot, offers rental potential and is suitable for two families. The property size is 2485 square feet. It is zoned R2 - Residential Duplex.
    Property Profile Location Intelligence

    Current Use by Public Records

    Duplexes

    Suggested Use

    Law Firm Restaurant Realty agency Spa & Massage Dental Office Hair Salon Nail Salon Clothing Store Building Supply Gym & Fitness

    Zoning and permitted uses should be independently verified with local authorities.

    Location Insight

    • Map
    • Local Demand
    City
    Key Largo
    County
    Monroe
    State
    Florida
    Longitude
    -80.433859
    Latitude
    25.089675

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    FAQs

    What type of property is this?
    Duplex - Canal-front duplex with ocean views, dock, and boat lift.
    Where is this duplex located?
    The property is located at 139 Marina Ave Key Largo, FL.
    What is the asking price?
    The asking price for this property is $2,695,000.
    What are key features of this property?
    This property features: - Legal duplex with breathtaking ocean views and excellent rental potential.; - 75 ft waterfront with concrete dock and 20,000 lbs boat lift on a wide 80 ft deep-water canal with direct ocean access.; - Completely renovated concrete construction providing durability.
    (305) 451-4078
    Request Owner's contact information
    139 Marina Ave Key Largo, FL 33037
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    Realmo Value Estimation

    Realmo estimates a property’s market value using a proprietary methodology that incorporates public data and user-submitted information. This cumulative value is generated by integrating a variety of conventional and innovative methods. 

    Disclaimer

    These figures are not official appraisals and should not be used as a substitute for a valuation performed by a licensed appraiser.

    Actual market value may differ due to factors not captured in the data. Estimates are offered for informational purposes only, and users should conduct independent research before making financial or investment decisions.

    By using this feature, you acknowledge that Realmo is not responsible for actions taken based on these estimates.

    AI approach

    Realmo AI Method estimates property value using machine learning models trained on millions of comparable listings, transactions, and market signals. It analyzes property features, location intelligence data, and current market dynamics to predict the most probable market value in real time.

    Cap approach

    Capitalization Method calculates value based on estimated net operating income (NOI) and applying a market-based capitalization rate (cap rate), we estimate what a typical investor might be willing to pay for it.

    Comparable approach

    Comparable estimate is based on recent sales of similar nearby properties, adjusted for factors like size, condition, and location.

    Relative

    Relative property class coefficient uses factors that account for typical price differences between various asset types (e.g., retail vs. industrial) to provide a more accurate market-aligned estimate.

    Geo

    Comparable Sales Method, enhanced by Geo coefficients — location-based adjustment factors that reflect differences in price levels across neighborhoods, cities, or regions ensuring a more accurate, market-sensitive valuation.

    Alternative use

    Estimate considers the property’s potential value if used for a different purpose-based on zoning, demand, and market feasibility.

    More about this property
    139 Marina Ave Key Largo, FL 33037
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