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    512 W Adams St Port O' Connor, TX 77982

    View on Map
    Sponsored
    For Sale
    $580,000

    COMMERCIAL - Port O'Connor, TX

    Property size:
    2,943 SF
    Lot size:
    0.32 Acres
    Days on Market:
    46
    Last Refresh:
    Mar 22 at 8:06 pm

    Property Features for 512 W Adams St

    General Information

    Property type
    Commercial Sale
    Property subtype
    Other
    Standard status
    Active
    APN
    31962
    Parking features
    Garage, Carport, Oversize, Driveway
    Interior features
    PullDownAtticStairs
    Size
    2,943 SF
    Lot size
    0.32 Acres

    Utilities

    Sewer type
    Public Sewer
    Heating system
    Central, Electric (Heating)
    Cooling system
    Electric, Central Air
    Water source
    Public

    Building Details

    Year built
    2010
    Floors in Building
    2
    Flooring type
    Tile, Laminate, Carpet, Concrete
    Building materials
    HardiplankType, MetalFrame
    Roof type
    Composition, Shingle

    We can help!

    Listing Contact
    Brenda G Carter
    Brenda G Carter

    Russell Cain Real Estate Port O'Connor

    Listing agent Brenda Carter License #0465824

    Listing date Feb 4, 2026

    MLS# 539707

    Copyright © 2026 Central Texas Multiple Listing Service. 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

    Port O'Connor Income Property

    This property features a fourplex with an oversized boat barn situated on two corner lots measuring 100 x 140, located on Adams Ave. & 6th St. The fourplex includes two upstairs units, each with 2 bedrooms and 1 bathroom, spanning 1200 square feet. Each unit has a full kitchen, living area, dining space, upper porch, and two assigned parking spaces. There is also a 483 square foot unit downstairs with a full kitchen, living area, bedroom, and large bathroom. A shared laundry facility with a washer and dryer is available for tenants. The property also includes an oversized boat barn with a 2-bed, 1-bath apartment upstairs and a private laundry facility downstairs. An additional guest bath is under construction downstairs in the barn. The boat barn can accommodate a large offshore boat or airboat. The property is located close to Kingfisher beach, Josie's Restaurant, and the U.S. Post Office. The total lot size is 0.3214 acres. The property's total size is 2943 square feet. All utilities are on one hookup, with bills currently split four ways. The property is located in Port O'Connor, TX.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Quadplexes

    Map

    City
    Port O' Connor
    County
    Calhoun
    State
    Texas
    Longitude
    -96.6507
    Latitude
    28.2231

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    FAQs

    What type of property is this?
    Quadplex - Fourplex with oversized boat barn on two corner lots.
    Where is this quadplex located?
    The property is located at 512 W Adams St Port O' Connor, TX.
    What is the asking price?
    The asking price for this property is $580,000.
    What are key features of this property?
    This property features: - Oversized Boat Barn (Barnominium) with a 2 bed, 1 bath apartment inside, perfect for boat enthusiasts.; - Fourplex on two corner lots (100 x 140) provides multiple rental income streams.; - Two spacious 2 bed, 1 bath units (1200 SF each) feature full kitchens, living, dining areas, upper porch space and 2 assigned parking spaces.
    (361) 920-2005
    Request Owner's contact information
    512 W Adams St Port O' Connor, TX 77982
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    Port O' Connor, TX 77982
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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.

    More about this property
    512 W Adams St Port O' Connor, TX 77982
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    We can help!
    Listing Contact
    Brenda G Carter
    Brenda G Carter
    Real Estate License ID: 0465824
    Learn More
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