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    Duplex Residential Income Property Title is generated by Realmo AI

    338 Donaldson, San Antonio, TX 78201

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    Claim this Listing
    New
    For Sale
    Under Contract
    $175,000

    MULTI_FAMILY - San Antonio, TX

    Property size:
    2,280 SF
    Lot size:
    0.18 Acres
    Price / SF:
    $76/SF
    Added:
    Jun 5, 2026
    Days on Market:
    3
    Last Refresh:
    Jun 7 at 2:06 pm

    Property Features for 338 Donaldson

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Other
    Standard status
    Active Under Contract
    Size
    2,280 SF
    Lot size
    0.18 Acres

    Taxes and HOA fees

    Tax Annual Amount
    6327

    Building Details

    Year built
    1936

    We can help!

    Listing Contact
    Michelle Campbell
    Michelle Campbell

    Listing agent Michelle Campbell

    Listing office Keller Williams City-View 15510 Vance Jackson Rd, San Antonio, TX

    Listing date Jun 5, 2026

    MLS# 1948865 Listing URL

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

    HighLights

    • Prime location in the historic Monticello Park District
    • Close proximity to Downtown San Antonio and the Pearl District
    • Strong income potential as a duplex
    • Investment opportunity with renovation potential
    • Convenient access to major universities
    • Built in 1936, offering historic charm

    Overview

    This duplex residential income property for sale includes two units within a single structure, totaling 2,280 square feet on a 0.184-acre lot. The listing is positioned as a renovation opportunity, with the intent that an owner can update the property to improve its condition and livability. As presented, this asset supports buyers who want a manageable residential investment format and are prepared to do necessary improvements.

    The property is located at 338 Donaldson in San Antonio, Texas 78201, within Bexar County. The remarks indicate it is near Downtown San Antonio, the Pearl District, and major universities, which can be helpful for tenants who value proximity to employment, entertainment, and campus areas.

    For an investor or owner-occupant, a duplex can offer flexibility compared with single-family rentals by spreading rent across two units under one ownership. Buyers considering this property should plan for renovation, consistent with the listing’s described condition and value approach, and evaluate the property’s finish level and unit readiness as part of due diligence.
    Property Profile 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
    San Antonio
    County
    Comal
    State
    Texas
    Longitude
    -98.528859
    Latitude
    29.462617

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    FAQs

    What type of property is this?
    Duplex - Two-unit income property offered for sale on a 0.184-acre lot.
    Where is this duplex located?
    The property is located at 338 Donaldson San Antonio, TX.
    What is the asking price?
    The asking price for this property is $175,000.
    What are key features of this property?
    This property features: Prime location in the historic Monticello Park District; Close proximity to Downtown San Antonio and the Pearl District; Strong income potential as a duplex
    (210) 696-9996
    We can help!
    Listing Contact
    Michelle Campbell
    Michelle Campbell
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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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