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    Renovated Duplex with Vacant Unit Title is generated by Realmo AI

    3807 & 3803 William Street, Sachse, TX 75048

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    For Sale
    Under Contract
    $369,900

    MULTI_FAMILY - Sachse, TX

    Property size:
    2,028 SF
    Lot size:
    0.33 Acres
    Price / SF:
    $182/SF
    Added:
    May 27, 2026
    Days on Market:
    8
    Last Refresh:
    Jun 3 at 12:06 pm

    Property Features for 3807 & 3803 William Street

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Other
    Bedrooms
    4
    Bathrooms
    4
    Rooms
    Bathroom 3, Bathroom 4, Bathroom 2, Bathroom 1, Bedroom 1, Bedroom 2, Bedroom 3, Bedroom 4
    Parking
    2
    Parking features
    Carport
    Interior features
    GraniteCounters
    Fencing
    Fenced
    Fireplace
    1
    Appliances
    Dishwasher, ElectricCooktop, ElectricOven, Disposal
    Standard status
    Active Under Contract
    APN
    480111000i04b0000
    Size
    2,028 SF
    Lot size
    0.33 Acres

    Taxes and HOA fees

    Tax Description
    Salmon Estates 3 Rep Blk I Lot

    Utilities

    Sewer type
    Public Sewer
    Heating system
    Natural Gas, Central
    Cooling system
    Central Air, Electric
    Water source
    Public

    Building Details

    Year built
    1983
    Floors in Building
    1
    Number of units
    2
    Flooring type
    Tile, Carpet
    Building materials
    Brick, WoodSiding
    Roof type
    Composition

    We can help!

    Listing Contact
    Jon Callaway
    Jon Callaway

    Listing agent Jon Callaway License #0386299

    Listing office Keller Williams Realty DPR Dallas, TX

    Listing date May 27, 2026

    MLS# 21275146 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

    • Duplex with one side currently leased and the other side vacant and freshly renovated in 2026
    • Renovated unit includes new laminate flooring, fresh interior paint, updated bathroom vanities and commodes, and new lighting and plumbing fixtures
    • Kitchen features granite countertops with new vent hood and new stainless steel appliances
    • Central heating and cooling; natural gas heating with central air and electric cooling
    • Brick and wood siding construction with composition roof, built in 1983
    • Carport parking, fenced property, and public water and public sewer

    Overview

    This duplex includes two units on an oversized homesite with generous backyards. One side is currently leased, while the other is vacant and was freshly renovated in 2026, offering new laminate flooring, fresh interior paint, updated bathroom vanities and commodes, and new lighting. The renovated unit also features a granite kitchen countertop package with a new vent hood and new stainless steel appliances, along with new plumbing fixtures.

    The property is positioned for convenient commuting with quick access to Highway 78 and the George Bush Turnpike. It’s also within about five minutes of a new mall and nearby shopping centers, supporting everyday convenience for tenants and future occupants.

    For buyers looking for residential income with room to keep rents stable, the existing lease plus the move-in-ready condition of the vacant side can provide a straightforward pathway to maximize occupancy. The updated finishes and refreshed interior improvements make the property well-suited for an owner-operator seeking a duplex that’s ready to rent without extensive near-term work.
    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
    -96.587036
    Latitude
    32.977216

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    FAQs

    What type of property is this?
    Duplex - Duplex offers one leased side and a freshly renovated vacant unit with updated finishes and kitchen upgrades.
    Where is this duplex located?
    The property is located at 3807 & 3803 William Street Sachse, TX.
    What is the asking price?
    The asking price for this property is $369,900.
    What are key features of this property?
    This property features: Duplex with one side currently leased and the other side vacant and freshly renovated in 2026; Renovated unit includes new laminate flooring, fresh interior paint, updated bathroom vanities and commodes, and new lighting and plumbing fixtures; Kitchen features granite countertops with new vent hood and new stainless steel appliances
    (972) 732-6000
    We can help!
    Listing Contact
    Jon Callaway
    Jon Callaway
    Real Estate License ID: 0386299
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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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