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    Duplex Income Property with Private Basements Title is generated by Realmo AI

    9421 Stansberry Avenue St, Louis, MO 63134

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    For Sale
    $210,000

    2-4 Units - St Louis, MO

    Property size:
    1,565 SF
    Lot size:
    0.24 Acres
    Price / SF:
    $134/SF
    Added:
    Jun 5, 2026
    Days on Market:
    1
    Last Refresh:
    Jun 5 at 1:06 pm

    Property Features for 9421 Stansberry Avenue St

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Other
    Rooms
    Basement
    Basement Y/N
    1
    Standard status
    Active
    APN
    13K-43-0463
    Size
    1,565 SF
    Lot size
    0.24 Acres

    Taxes and HOA fees

    Tax Year
    2025
    Tax Annual Amount
    2328

    Utilities

    Cooling system
    Central Air

    Building Details

    Year built
    1960
    Building materials
    Brick
    Architectural style
    Other

    We can help!

    Listing Contact
    Lynne Hart

    Listing agent Lynne Hart License #2015021561

    Listing office Real Broker LLC 212 Kirkwood Rd Suite 1, Kansas City, MO

    Listing date Jun 5, 2026

    MLS# 26034993 Listing URL

    Copyright © 2026 Mid America Regional Information Systems, Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

    HighLights

    • Duplex generating $1,900 per month in gross rental income and operating at nearly a 9% cap rate
    • Brick duplex built in 1960 with central air
    • New roof installed in 2019
    • HVAC systems and water heaters replaced within the last 7 years
    • Each unit has its own private basement for added tenant storage space

    Overview

    This turnkey duplex income property is configured as two units at 9421–9423 Stansberry Avenue, offering each tenant a private basement for added storage and convenience. The property is described as well-maintained, with major improvements including a new roof installed in 2019 and HVAC systems and water heaters replaced within the last seven years. Lot size is listed at 0.2369 acres, with an overall building size of 1,565 square feet.

    Located in St. Louis, Missouri 63134 in St. Louis County, the offering is positioned for buyers seeking an existing, operating rental property. The seller states the duplex is currently generating $1,900 per month in gross rental income.

    Based on the information provided, this is being marketed as a ready-to-own residential income asset with operating history already in place. The stated nearly 9% cap rate (per the remarks) may appeal to investors looking for a straightforward way to add a maintained duplex to their portfolio. With both units featuring private basements and recent mechanical and roof updates, the property is intended to reduce near-term capital concerns while supporting ongoing rental operations.

    Local Financial Insights For Multifamily LT 5

    Simulate Cap Rate and NOI

    NOI Build-Up
    Vacancy
    income lost from leasable area expected to sit empty during the year — subtracted from gross rent.
    EGI (Effective Gross Income)
    gross rent minus vacancy losses — the realistic income before paying operating costs.
    OpEx (Operating Expenses)
    recurring costs to operate the property (property tax, insurance, utilities, maintenance, management) — excludes financing and capital improvements.
    NOI (Net Operating Income)
    income a property generates after operating costs but before financing and taxes.

    Component $ $/SF
    Gross rent $25.4k $16.20
    − Vacancy −$1.4k −$0.92
    EGI $23.9k $15.28
    − OpEx −$7.2k −$4.58
    NOI $16.7k $10.69
    1,565 SF · lease $16.20/SF/yr · vacancy 5.70% · expense 30.00%

    Alternative Uses

    Best Use
    Multifamily LT 5
    $239.1K
    $209.2K – $278.9K (±1% cap)
    NOI $16,736 @ 7.0% cap · market cap 7.97%
    Second Best
    Apartment 5plus
    $208.1K
    $182.1K – $242.7K (±1% cap)
    NOI $14,564 @ 7.0% cap · market cap 6.94%
    Theoretical Best
    Office A
    $335.9K
    $293.9K – $391.9K (±1% cap)
    NOI $23,511 @ 7.0% cap · market cap 11.20%
    Zoning and permitted uses should be independently verified with local authorities.
    Property Profile Location Intelligence

    Current Use by Public Records

    Duplexes

    Map

    City
    Louis
    County
    St. Louis
    State
    Missouri
    Longitude
    -90.358926
    Latitude
    38.730039

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    FAQs

    What type of property is this?
    Duplex - Turnkey duplex generating $1,900 per month in gross rental income with updated roof, HVAC, and water heaters.
    Where is this duplex located?
    The property is located at 9421 Stansberry Avenue St Louis, MO.
    What is the asking price?
    The asking price for this property is $210,000.
    What are key features of this property?
    This property features: Duplex generating $1,900 per month in gross rental income and operating at nearly a 9% cap rate; Brick duplex built in 1960 with central air; New roof installed in 2019
    (314) 324-6907
    We can help!
    Listing Contact
    Lynne Hart
    Real Estate License ID: 2015021561
    Request Owner's contact information
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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
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