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    Property profile & analytics

    100 Illinois St St. Charles, IL 60174

    • Office Properties & Spaces
    • 29,592 SF
    • 0.15 lot acres
    For Lease
    View listing
    $23 SF/Yr
    Value Estimation
    $13,945,000
    Last Sale
    Nov 30, 2021
    $12,500,000
    Location Intelligence
    Property ID
    US28-3285850
    The Realmo ID is a unique identifier assigned to every property, incorporating country codes and precise geo-coordinates for 300x300-foot land blocks. It enables standardized data collection and seamless integration of disparate sources such as ownership, tax, title data and physical specifications. By aggregating current and historical records, the Realmo ID powers advanced analytics and delivers deep, verifiable insights for real estate professionals.

    Current Use by Public Records

    • Effective Data Inc. / Business Management Consultant
    • Balta Design / Website Designer / Graphic Designer
    • PassCamp / Software Company
    • STG Divorce Law / Divorce Lawyer / Family Law Attorney
    • Melei Petsche Spencer / Divorce Lawyer / Family Law Attorney

    Property Details for 100 Illinois St

    Year built
    2008
    Lot size
    0.15 lot acres
    Property size
    29,592 SF
    Property type
    Office Properties & Spaces
    APN
    09-34-126-035
    APU
    934126035

    Description

    This exceptional 5,636 square foot office space is located in the prestigious Plaza building at 100 Illinois St, St. Charles, IL 60174. Built in 2008, this three-story building offers a blend of traditional and creative office layouts, perfect for a corporate headquarters. The suite boasts stunning views overlooking the St. Charles shopping and dining plaza and the Fox River, with convenient access to biking and walking trails. The property features a total of 52,000 square feet, with this specific suite representing the entire building's current vacancy. Public parking is readily available in a nearby deck. The building includes elevators for easy access to all three floors. The minimum divisible space is 5,636 square feet, and the maximum contiguous space available is also 5,636 square feet. This presents a unique opportunity for a single tenant to occupy the entire building. The space was previously occupied by XSport Fitness as their headquarters. This location offers an ideal Chicagoland headquarters location with excellent amenities and accessibility.

    Value Estimation

    by Realmo proprietary methodology Last update: July 3, 2025

    • AI approach

      CAP return
      Estimation
      Estimation
      $14,310,000

    • CAP approach

      CAP return
      Estimation
      6%
      $12,075,000
      6.5%
      $12,245,000
      7%
      $13,465,000

    • Comparable approach

      Method
      Estimation
      Relative Method
      $13,155,000
      Geo Method
      $12,675,000

    • Alternative Use

      Use
      Estimation
      Distribution
      $12,640,000
      Retail
      $12,520,000
      Mixed-Use
      $11,795,000
      Hospitality
      $13,780,000
      Educational
      $13,490,000
      Residential Income
      $13,150,000
      Energy
      $10,515,000
      Income-Based Land
      $14,125,000
      Food Service
      $13,865,000

    Location Insight

    • Map
    • Local Demand
    City
    Saint Charles
    County
    Kane
    State
    Illinois
    Longitude
    -88.3141
    Latitude
    41.9119
    CBSA code
    16980
    CBSA name
    CHICAGO-NAPERVILLE-JOLIET, IL-IN-WI METROPOLITAN STATISTICAL AREA

    Property Tax & Assessments

    Tax date
    Tax Amount
    Assessed Land Value
    Assessed Improvement Value
    Total Assessed Value
    Applied Tax Rate
    Land Market Value
    Improvement Market Value
    Total Market Value
    2022
    $98,645
    $107,096
    $946,553
    $1,053,649
    -
    $321,288
    $2,839,659
    $3,160,947

    Comparable in this City

    • Value Estimation by Request
      0.03 Acres

      1601 Main St, Unit S1B

      OFFICE (GENERAL) • 0.03 Acres
      1601 Main St, Saint Charles, IL 60174-2431
      View Details
    • Value Estimation by Request
      0.03 Acres

      1607 Main St, Unit S2C

      OFFICE (GENERAL) • 0.03 Acres
      1607 Main St, Saint Charles, IL 60174-2390
      View Details
    • Value Estimation by Request
      1.29 Acres

      Saint Charles, IL 60174

      OFFICE (GENERAL) • 1.29 Acres
      Saint Charles, IL 60174
      View Details
    • Value Estimation by Request

      457 Dunham Rd, Unit A

      OFFICE (GENERAL)
      457 Dunham Rd, Saint Charles, IL 60174-1446
      View Details
    • Value Estimation by Request

      157 Tyler Rd

      OFFICE (GENERAL)
      157 Tyler Rd, St Charles, IL 60174-3304
      View Details
    • Value Estimation
      $285,000
      2,215 SF

      1215 Main St

      OFFICE (GENERAL) • 2,215 SF
      1215 Main St, Saint Charles, IL 60174-2274
      View Details

    Similar Nearby for Sale

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      Residential Land in St. Charles

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    • Contact for pricing
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    Similar Nearby for Lease

    • $13 SF/Yr
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      St. Charles Office Building - 28,000 SF

      Prime St. Charles office space, multiple tenants.
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      St. Charles Office Space Available

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    • $12 SF/Yr
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      St. Charles Office Space Available

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      St. Charles Office Space for Lease

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    100 Illinois St
    St. Charles, IL 60174
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    Realmo Value Estimation

    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.

    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.

    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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