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    1231 ILLINOIS AVENUE Palm Harbor, FL 34683

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    New
    For Sale
    $620,000

    Duplex - PALM HARBOR, FL

    Type:Duplex
    Property size:
    1,820 SF
    Lot size:
    0.13 Acres
    Price / SF:
    $340/SF
    Added:
    May 2, 2026
    Days on Market:
    2
    Last Refresh:
    May 3 at 4:06 am

    Property Features for 1231 ILLINOIS AVENUE

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Duplex
    Bedrooms
    6
    Rooms
    Bedroom 1, Bedroom 2, Bedroom 3, Bedroom 4, Bedroom 5
    Parking features
    Garage, Garage - Attached
    Interior features
    Ceiling Fans(s), Eat-in Kitchen, Kitchen/Family Room Combo, Primary Bedroom Main Floor, Solid Surface Counters
    Standard status
    Active
    APN
    01-28-15-88560-127-1300
    Size
    1,820 SF
    Lot size
    0.13 Acres

    Taxes and HOA fees

    Tax Year
    2026
    Tax Annual Amount
    0

    Utilities

    Heating system
    Central
    Cooling system
    Central Air

    Building Details

    Year built
    1985
    Number of units
    1
    Flooring type
    Laminate
    Building materials
    Vinyl Siding
    Roof type
    Shingle
    Architectural style
    Other

    We can help!

    Listing Contact
    Mark Longenecker
    Mark Longenecker

    Listing agent Mark Longenecker License #3286348

    Listing office FUTURE HOME REALTY INC 13029 W Linebaugh Av Ste 101, Tampa, FL

    Listing date May 2, 2026

    MLS# TB8503172 Listing URL

    Copyright © 2026 Stellar MLS. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

    Overview

    Palm Harbor Duplex with Garages

    This Palm Harbor duplex is located in a walkable downtown area, close to shops, restaurants, and marina access. Each unit features 3 bedrooms, 2 full baths, and attached garages, with parking available for 6 cars. One unit has been fully updated and is currently vacant, ready for immediate occupancy and a potential rent increase to $2,400 or more per month. The other unit is currently rented month to month at $1,800 per month. A new roof was installed in 2024, and a new hot water heater is scheduled for 2026. The A/C unit was replaced in 2020. The property benefits from strong rental demand in Palm Harbor, which is popular with professionals and small families. The location offers a charming downtown with boutique shops, cafes, and waterfront parks. It is also close to the Pinellas Trail, local marinas, and provides easy access to major roads for commutes to Tampa and St. Pete. The property attracts renters seeking a small-town coastal lifestyle with nearby amenities and good schools. The property size is 1820 square feet and sits on a 0.13-acre lot.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Duplexes

    Suggested Use

    Real Estate Agency Law Firm Restaurant Spa & Massage Center Dental Office Hair Salon Nail Salon Building Supply Gym & Fitness Center Daycare Center

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

    Location Insight

    • Map
    • Local Demand
    City
    Palm Harbor
    County
    Pinellas
    State
    Florida
    Longitude
    -82.764679
    Latitude
    28.074691

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    FAQs

    What type of property is this?
    Duplex - Updated duplex in downtown Palm Harbor with strong rental demand.
    Where is this duplex located?
    The property is located at 1231 ILLINOIS AVENUE Palm Harbor, FL.
    What is the asking price?
    The asking price for this property is $620,000.
    What are key features of this property?
    This property features: Fully updated and vacant Unit A, ready for immediate occupancy, with rent potential of $2,500+/month.; Prime downtown Palm Harbor location, walkable to shops, restaurants, and marina.; Strong rental income potential with Unit B currently rented at $1,800/month.
    (727) 846-3025
    We can help!
    Listing Contact
    Mark Longenecker
    Mark Longenecker
    Real Estate License ID: 3286348
    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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    1231 ILLINOIS AVENUE, PALM HARBOR, FL 34683

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