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    Leased Duplex Investment Opportunity Title is generated by Realmo AI

    4023 William Street, Sachse, TX 75048

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    Claim this Listing
    For Sale
    Under Contract
    $339,999

    Duplex - Sachse, TX

    Type:Duplex
    Lot size:
    0.14 Acres
    Added:
    Apr 11, 2026
    Days on Market:
    50
    Last Refresh:
    May 30 at 9:06 am

    Property Features for 4023 William Street

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Duplex
    Bedrooms
    4
    Bathrooms
    4
    Rooms
    Bathroom 1, Bathroom 2, Bathroom 3, Bathroom 4, Bedroom 1, Bedroom 2, Bedroom 3, Bedroom 4
    Parking
    2
    Parking features
    Garage
    Interior features
    Pantry
    Exterior features
    Fence
    Fencing
    Fenced
    Fireplace
    1
    Appliances
    Cooktop, Cooktop - Electric, Dishwasher, Washer
    Standard status
    Active Under Contract
    APN
    480111000C08B0000
    Lot size
    0.14 Acres

    Utilities

    Heating system
    Central, Fireplace(s), Natural Gas
    Cooling system
    Central Air, Electric

    Building Details

    Year built
    1983
    Floors in Building
    1
    Flooring type
    Laminate, Tile, Tile - Ceramic
    Building materials
    Brick
    Roof type
    Composition
    Architectural style
    Other

    We can help!

    Listing Contact
    Eric Brown

    Listing agent Eric Brown License #0715879

    Listing office American Realty 322 Texoma Dr, Paris, TX

    Listing date Apr 11, 2026

    MLS# 21109340 Listing URL

    Copyright © 2026 North Texas Real Estate 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

    • Fully leased duplex, generating $3,250 monthly income
    • Each unit features 2 bedrooms, 2 full baths, and attached 1‑car garage
    • Includes all appliances: refrigerator, range, dishwasher, washer, and dryer in both units
    • Conveniently located near George Bush Turnpike and Lake Ray Hubbard
    • Easy‑care living with hard‑surface wood laminate flooring and fenced yards
    • Option to purchase a second duplex at 4007‑4003 William for simplified management

    Overview

    This is an opportunity to own a well-maintained duplex. The price includes both 4019 and 4023 William. Each unit features 2 bedrooms, 2 full baths, and an attached 1-car garage. Both units are currently leased for a total of $3,250 per month, providing immediate rental income. The units include a fireplace, hard-surface wood laminate flooring, ceiling fans, and fenced yards. Each unit is equipped with a refrigerator, range, dishwasher, washer, and dryer. The property is located minutes from the George Bush Turnpike and 10 minutes from Lake Ray Hubbard, offering access to shopping, dining, and major employers. The lot size is 0.137 acres. The owner is also selling another duplex set at 4007-4003 William.
    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
    Sachse
    County
    Dallas
    State
    Texas
    Longitude
    -96.584981
    Latitude
    32.978918

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    FAQs

    What type of property is this?
    Duplex - Fully leased duplex in Sachse, TX, generating immediate rental income.
    Where is this duplex located?
    The property is located at 4023 William Street Sachse, TX.
    What is the asking price?
    The asking price for this property is $339,999.
    What are key features of this property?
    This property features: Fully leased duplex, generating $3,250 monthly income; Each unit features 2 bedrooms, 2 full baths, and attached 1‑car garage; Includes all appliances: refrigerator, range, dishwasher, washer, and dryer in both units
    (972) 322-2171
    We can help!
    Listing Contact
    Eric Brown
    Real Estate License ID: 0715879
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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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