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    Oversized Boat Slip with Tiki Title is generated by Realmo AI

    100 Avenue I, Marathon, FL 33050

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    For Sale
    $920,000

    LAND - Marathon, FL

    Added:
    Apr 24, 2026
    Days on Market:
    29
    Last Refresh:
    May 22 at 1:06 pm

    Property Features for 100 Avenue I

    General Information

    Property type
    Land
    Property subtype
    Other
    Zoning
    MU - M - Mixed Use - Mari
    Parking features
    Guest, Open
    Pets allowed
    Yes
    Standard status
    Active
    APN
    00364990000101

    Taxes and HOA fees

    Tax Year
    2025
    Tax Description
    Bk 12 Pt Lt 26 Coco Plum Beach Pb4-166 Fat Deer Key Pt Submerged Land (Canal) Or375-17/20 Or375-125/7 Or375-128/36 Or397
    Tax Annual Amount
    1880

    Utilities

    Utilities
    Water Available
    Water front
    1

    Building Details

    Year built
    1987

    We can help!

    Listing Contact
    Stacy L Shahan

    Listing agent Stacy L Shahan License #628142

    Listing office Island Real Estate Company Florida Keys PO Box 420501, Summerland Key, FL

    Listing date Apr 24, 2026

    MLS# 619630 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.

    HighLights

    • Oceanside location with direct, bridge‑free access to open water.
    • Rare, oversized 22‑foot x 80‑foot boat slip with a 65 foot dock suitable for larger vessels.
    • Located in the exclusive, gated Coco Plum Beach Yacht Club offering enhanced privacy and security.
    • Includes a generous 11' x 30' tiki hut for outdoor living space.
    • Equipped with electric, water, and pump‑out services, plus a dedicated storage unit.
    • Strong rental income potential due to the rarity of large slips with land‑based amenities.

    Overview

    Located in the Coco Plum Beach neighborhood of Marathon, this oversized boat slip offers a Florida Keys waterfront lifestyle. Situated in the Coco Plum Beach Yacht Club, the slip measures 22 feet by 80 feet with a 65-foot dock, suitable for accommodating larger vessels. Positioned on the oceanside, it provides direct, bridge-free access to open water. Located at the end of a gated section of the marina, the location offers privacy and navigation to the ocean. Enhancing the experience is an 11-foot by 30-foot tiki hut. The slip is equipped with electric, water, and pump-out services. A dedicated storage unit provides space for boating gear and equipment. Marina amenities include a community pavilion, bathhouse, and on-site laundry facilities. The property has rental income potential. The dimensions are 38 feet x 82 feet x 68 feet.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Saltnsun llc (Bike/Boat/Book/etc) Store salty pup adventurs (Bike/Boat/Book/etc) Store Marathon Sailfish Marina Dock Builder Coco Plum Beach ... Association / Organization Salty Pup Adventures (Bike/Boat/Book/etc) Store

    Suggested Use

    Restaurant Law Firm Real Estate Agency Hair Salon Auto Repair Shop Big Box & Wholesale Store Auto Parts Store Department Store Bar & Pub Food Market

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

    Location Insight

    • Map
    • Local Demand
    City
    Marathon
    County
    Monroe
    State
    Florida
    Longitude
    -81.004763
    Latitude
    24.733966

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    FAQs

    What type of property is this?
    Marina - Rare oversized boat slip in Marathon's Coco Plum Beach.
    Where is this marina located?
    The property is located at 100 Avenue I Marathon, FL.
    What is the asking price?
    The asking price for this property is $920,000.
    What are key features of this property?
    This property features: Oceanside location with direct, bridge‑free access to open water.; Rare, **oversized 22‑foot x 80‑foot boat slip** with a 65 foot dock suitable for larger vessels.; Located in the **exclusive, gated Coco Plum Beach Yacht Club** offering enhanced privacy and security.
    (305) 395-0696
    We can help!
    Listing Contact
    Stacy L Shahan
    Real Estate License ID: 628142
    Learn More
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    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.

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