Add Listing
    For Sale
    • For Sale
    • For Lease
    • Recently Sold
    • Property Lookup
    • Brokers
    AI Search
    Back to Search
    The Largest CRE Database in the US with Over 1 Million Listings

    17-18 Man-O-War Dr Marathon, FL 33050

    View on Map
    Sponsored
    For Sale
    $1,550,000

    Multi-family - Marathon, FL

    Type:Multi Family
    Property size:
    1,668 SF
    Lot size:
    0.08 Acres
    Days on Market:
    25
    Last Refresh:
    Mar 27 at 4:06 am

    Property Features for 17-18 Man-O-War Dr

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Multi Family
    Standard status
    Active
    Zoning
    RM - Residential Medium
    Rooms
    Bathroom 1, Bathroom 2, Bathroom 3, Bathroom 4, Bedroom 1, Bedroom 2, Bedroom 3, Bedroom 4
    Bedrooms
    4
    Bathrooms
    4
    APN
    00354810-000200,00354810-00000
    Parking features
    Open
    Interior features
    Drapes/Blinds Incl
    Appliances
    Dishwasher, Dryer, Microwave, Refrigerator, Washer
    Size
    1,668 SF
    Lot size
    0.08 Acres

    Utilities

    Cooling system
    Ceiling Fan(s)
    Water front features
    Canal Front, Waterfront
    Water front
    1

    Building Details

    Year built
    1971
    Flooring type
    Vinyl
    Roof type
    Metal
    Architectural style
    Other

    We can help!

    Listing Contact
    Shannon Butler
    Shannon Butler

    Key Colony Beach Realty, Inc.

    Listing agent Shannon Butler License #699921

    Listing date Mar 2, 2026

    MLS# 618475 Listing URL

    Copyright © 2026 Marathon and Lower Keys Association 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.

    Learn more

    Property Insight Report

    Overview

    Waterfront Duplex in Sombrero Beach

    This updated waterfront duplex is located in the Sombrero Beach neighborhood. The property offers an investment opportunity, vacation retreat, or full-time residence with income potential. Both sides of the duplex have been upgraded with new flooring and fresh interior paint, creating modern living spaces. A 45-foot dock is located right out back, providing direct ocean access for boating, fishing, and diving. The property offers partial open water views. Each unit offers privacy and flexibility, and both sides are also available for individual purchase. The property is located in Marathon, FL. The lot size is 0.08 acres, and the property size is 1668 square feet. The zoning is RM - Residential Medium. A party wall agreement is on file.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Duplexes

    Map

    City
    Marathon
    County
    Monroe
    State
    Florida
    Longitude
    -81.0717
    Latitude
    24.7161

    Nearby Similar for Sale

    • New
      $1,533,333
      3,429 SF

      Highway Exposure Commercial Building

      Corner lot building with drive-thru and patio.
      11401 Overseas Hwy, Marathon, FL 33050
      View Details
    • $4,900,000
      160,800.00 Acres

      Waterfront Commercial Parcels with Bay Bottom

      Rare opportunity: waterfront parcels with bay bottom rights.
      13759 Overseas Hwy, Marathon, FL 33050
      View Details
    • $4,900,000
      160,800.00 Acres

      Waterfront Land with Bay Bottom Rights

      Rare opportunity: waterfront land with bay bottom rights in Marathon.
      13759 Overseas Hwy, Marathon, FL 33050
      View Details
    • $3,549,000
      6,128 SF

      Waterfront Redevelopment Opportunity in Marathon

      Rare waterfront redevelopment with deep water dockage and highway frontage.
      14 125Th Street Gulf, Marathon, FL 33050
      View Details
    • $3,549,000
      6,128 SF

      Waterfront Redevelopment Opportunity in Marathon

      Rare waterfront property with redevelopment potential and deep water dockage.
      14 125Th Street Gulf, Marathon, FL 33050
      View Details
    • Contact for pricing
      84 SF

      Shared Office Space Available

      Professional shared office space for lease in Marathon, Florida.
      9141 Overseas Hwy, Marathon, FL 33050
      View Details
    • $11,000,000
      12,198 SF

      Waterfront Residences: Luxury & Income

      Three designer homes on a waterfront parcel with income potential.
      2394 Coco Plum Dr, Marathon, FL 33050
      View Details
    • $3,549,000
      6,128 SF

      Waterfront Redevelopment Opportunity in Marathon, FL

      Rare waterfront property with deep water dockage and redevelopment potential.
      14 125Th Street Gulf, Marathon, FL 33050
      View Details
    • $3,549,000
      6,128 SF

      Waterfront Redevelopment Opportunity with Dockage

      Rare waterfront redevelopment opportunity with deep water dockage and highway frontage.
      14 125Th Street Gulf, Marathon, FL 33050
      View Details
    • $11,000,000

      Waterfront Residences: Luxury & Income

      Three designer homes on an exclusive waterfront parcel with income potential.
      2394 Coco Plum Dr, Marathon, FL 33050
      View Details
    • $1,800,000
      3,017 SF

      Multifamily Complex in Marathon, Florida

      Multifamily complex with redevelopment potential in a high-demand location.
      13755 Overseas Hwy, Marathon, FL 33050
      View Details
    • New
      $785,000
      834 SF

      Waterfront Duplex Near Sombrero Beach

      Updated half-duplex with new dock, ideal for rental income.
      17 Man-O-War Dr, Marathon, FL 33050
      View Details

    FAQs

    What type of property is this?
    Duplex - Updated waterfront duplex with dock and ocean access in Marathon.
    Where is this duplex located?
    The property is located at 17-18 Man-O-War Dr Marathon, FL.
    What is the asking price?
    The asking price for this property is $1,550,000.
    What are key features of this property?
    This property features: - Full waterfront duplex with 45-foot dock and direct ocean access.; - Located in the desirable Sombrero Beach neighborhood.; - Both sides of the duplex are updated with new flooring and fresh paint.
    (305) 395-1700
    Request Owner's contact information
    17-18 Man-O-War Dr Marathon, FL 33050
    Message sent successfully
    Error
    If you are the owner or broker of this property and would like to edit or remove this listing please send a message to web site administrator.
    17-18 Man-O-War Dr
    Marathon, FL 33050
    Message sent successfully
    Error
    Email to Your Friends
    Link copied to clipboard
    Separate multiple addresses with a comma
    Message sent successfully
    Error

    Realmo Value Estimations

    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.

    Realmo CapRate Calculation

    Realmo calculates the Capitalization Rate (Cap Rate) to help estimate a property's potential return on investment. The Cap Rate is a fundamental metric in commercial real estate that measures the relationship between a property's net operating income and its market value.

    How We Calculate Cap Rate

    Cap Rate Formula:
    Cap Rate (%) = (Net Operating Income / Property Value) × 100

    Net Operating Income (NOI) Formula:
    NOI = Area × Lease Rate × (1 - Vacancy Rate) × (1 - Operating Expense Ratio)

    Components

    Net Operating Income (NOI) represents the annual income a property generates after operating expenses:

    • Area: Building square footage from property records
    • Lease Rate: Annual $/sqft based on market data for the property type and geographic location
    • Vacancy Rate: Percentage of unoccupied space based on market data for the property type and location
    • Operating Expense Ratio: Operating costs as a percentage of income, varies by property type

    Property Value is derived from:

    • Recent sale price (if available)
    • Statistical models using comparable sales
    • AI-powered valuation estimates

    Example Calculation

    For a 100,000 sqft Office Building:

    • Lease Rate: $25.00/sqft/year (market data for Office in this area)
    • Vacancy Rate: 8% (market data for Office in this area)
    • Operating Expense Ratio: 35% (typical for Office properties)
    • Property Value: $15,000,000

    Step 1: Calculate NOI

    NOI = 100,000 × $25.00 × (1 - 0.08) × (1 - 0.35)
    NOI = 100,000 × $25.00 × 0.92 × 0.65
    NOI = $1,495,000/year

    Step 2: Calculate Cap Rate

    Cap Rate = ($1,495,000 / $15,000,000) × 100
    Cap Rate = 9.97%

    Property Type Considerations

    Net Operating Income calculations vary by property type due to different operating expense ratios:

    • Office: Higher expenses (30-40%) for HVAC, utilities, maintenance
    • Retail: Moderate expenses (25-35%) for common area maintenance
    • Industrial/Warehouse: Lower expenses (15-25%) for minimal tenant services
    • Multifamily: Moderate expenses (35-45%) including property management
    • Self-Storage: Lower expenses (25-35%) due to minimal maintenance

    Market lease rates and vacancy rates are specific to each property type and geographic location, reflecting local market conditions.

    Disclaimer

    These calculations are estimates for informational purposes only and should not be used as a substitute for professional financial analysis or appraisal.

    • Cap Rate calculations depend on market data that may change over time
    • Actual operating expenses, lease rates, and vacancy rates may differ from market averages
    • Individual property conditions, lease terms, and tenant quality significantly impact actual NOI
    • Property value estimates are approximations and not official appraisals
    • Cap rates vary widely by market, property condition, and investment risk profile

    Professional Guidance Recommended: Before making any investment or financial decisions, consult with licensed appraisers, commercial real estate brokers, and financial advisors who can evaluate your specific property and circumstances.
    By using this feature, you acknowledge that Realmo is not responsible for investment decisions or actions taken based on these estimates.

    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.

    Stat Estimate

    This method estimates value based on actual market adjusted recent (~5 years) sales of comparable properties around by location and property type.

    • Ranges - area data calculated by industry standard IQR Outlier Removal Method
    • Range-from: 75% of all similar sales ($/sqft) are above this value
    • Range-to: 75% of all similar sales ($/sqft) are below this value
    AI Estimate

    This method estimates value based on AI market estimation of comparable properties around by location and property type.

    • Ranges - area data calculated by industry standard IQR Outlier Removal Method
    • Range-from: 75% of all estimations ($/sqft) are above this value
    • Range-to: 75% of all estimations ($/sqft) are below this value
    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
    17-18 Man-O-War Dr Marathon, FL 33050
    Thanks! Your message was sent.
    Error! Your message wasn't sent.
    Please enter your name
    Please enter email
    Please enter the email in the correct format
    Please enter phone
    Please enter the number in the correct format
    Please enter message
    Thank You

    You are Unsubscribed From Notifications

    We can help!
    Listing Contact
    Shannon Butler
    Shannon Butler
    Real Estate License ID: 699921
    Learn More
    Google sign-in failed. Please try again or use another login method.
    Sign Up Successful!
    You now have access to more from Realmo!