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    1 Transam Plaza Dr Oakbrook Terrace, IL 60181
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    Property profile & analytics

    1 Transam Plaza Dr Oakbrook Terrace, IL 60181

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    • Office buildings
    • 4,775 SF
    • 6.48 lot acres
    For Sale
    $1,099,000
    View Listing →
    Oak Brook Terrace Office Space For Sale
    $1,099,000
    6,755 SF

    Oak Brook Terrace Office Space

    6700+ sqft office space in Oak Brook Terrace.

    1 Trans Am Plaza Dr, Oakbrook Terrace, IL
    View Listing
    Property ID
    US28-1309861
    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.
    Value Estimations
    Cap Rate Potential
    Location Intelligence

    Current Use by Public Records

    • Office buildings

    Property Details for 1 Transam Plaza Dr

    Year built
    1985
    Lot size
    6.48 lot acres
    Property size
    4,775 SF
    Zone code
    C
    Property type
    Office buildings
    APN
    06-21-405-046
    APU
    621405046

    Value Estimations

    based on Realmo’s proprietary methodology

    • Comparable approach

      Method
      Estimation
      Statistic Estimate
      $721,000
      Market price range: $569k - $1.02M
      AI Estimate
      $652,000
      Market price range: $393k - $993k

    • Alternative Use

      Use
      Estimation
      OFFICE BUILDING
      $775,000
      Current use
      MEDICAL BUILDING
      $1,075,000
      Change: +39% Conversion: Easy
      COMMERCIAL (GENERAL)
      $975,000
      Change: +26% Conversion: Easy
      RETAIL STORES
      $895,000
      Change: +15% Conversion: Moderate

    Get a detailed, property-specific estimation — fast and free

    Location Insight

    • Map
    • Local Demand
    City
    Oakbrook Terrace
    County
    Dupage
    State
    Illinois
    Longitude
    -87.9862
    Latitude
    41.8488
    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
    2023
    $11,797
    $14,940
    $134,450
    $149,390
    -
    $44,820
    $403,350
    $448,170

    Comparable in this City

    • Value Estimation
      $30,175,000
      148,924 SF

      1 Renaissance Blvd

      OFFICE BUILDING • 148,924 SF
      1 Renaissance Blvd, Oakbrook Terrace, IL 60181-4294
      View Details
    • Value Estimation
      $525,000
      2,432 SF

      127 Saint Charles Rd

      OFFICE BUILDING • 2,432 SF
      127 Saint Charles Rd, Villa Park, IL 60181-2425
      View Details
    • Value Estimation by Request
      2,322 SF

      41 Saint Charles Rd

      OFFICE BUILDING • 2,322 SF
      41 Saint Charles Rd, Villa Park, IL 60181-2482
      View Details
    • Value Estimation
      $10,565,000
      93,150 SF

      1st Smt Ave Ste, Unit 150

      OFFICE BUILDING • 93,150 SF
      1st Smt Ave Ste, Oakbrook Terrace, IL 60181-3952
      View Details
    • Value Estimation
      $880,000
      7,367 SF

      1 Transam Plz Dr Ste, Unit 360

      OFFICE BUILDING • 7,367 SF
      1 Transam Plz Dr Ste, Oakbrook Terrace, IL 60181-4828
      View Details
    • Value Estimation
      $680,000
      4,887 SF

      1 Transam Plz Dr Ste, Unit 500

      OFFICE BUILDING • 4,887 SF
      1 Transam Plz Dr Ste, Oakbrook Terrace, IL 60181-4282
      View Details

    Similar Nearby for Sale

    • $8,740,000

      Oakbrook Terrace Redevelopment Opportunity

      Prime location suitable for multifamily, retail, or restaurant redevelopment.
      800-1000 Royce Blvd, Oakbrook Terrace, IL 60181
      View Details
    • Contact for pricing

      Ten-Story Office Building For Sale

      232,052 RSF office building with abundant natural light.
      1815 South Meyers Rd, Oakbrook Terrace, IL 60181
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      Renovated Office Building with Amenities

      Five-story office building with modern amenities and convenient highway access.
      1801 S Meyers Rd, Oakbrook Terrace, IL 60181
      View Details
    • $449,900
      2,000 SF

      Oakbrook Terrace Commercial Building

      Commercial building in thriving business district with expressway access.
      1S221 Summit Ave, Oakbrook Terrace, IL 60181
      View Details
    • Contact for pricing

      Office Space in Brittany Tower

      Office suites with ample parking, near shopping and expressways.
      17W662 Butterfield Rd, Oakbrook Terrace, IL 60181
      View Details

    Similar Nearby for Lease

    • Contact for pricing

      Oakbrook Terrace Corporate Center III

      Ten-story office building with abundant natural light.
      1815 S Meyers Rd, Villa Park, IL 60181
      View Details
    • $26 SF/Yr

      One Oakbrook Terrace Office Leasing

      Office space with covered parking and convenient highway access.
      18W200 22Nd St, Oakbrook Terrace, IL 60181
      View Details
    • Contact for pricing

      Comar Centre I Office Space

      Office space for lease near Oakbrook Center and major interstates.
      1S660 Midwest Rd, Oakbrook Terrace, IL 60181
      View Details
    • Contact for pricing

      Renovated Class A Office Building

      Recently renovated Class A office building in Oakbrook Terrace, Illinois.
      17W220 W 22Nd St, Oakbrook Terrace, IL 60181
      View Details
    • $15 SF/Yr

      Unique Office Building with Terraces

      Customizable office spaces with terraces in a desirable location.
      800-1000 Royce Blvd, Oakbrook Terrace, IL 60181
      View Details
    • Contact for pricing

      Oakbrook Terrace Office Space Available

      Quality office space in a professionally managed building.
      17W662 Butterfield Rd, Oakbrook Terrace, IL 60181
      View Details
    View Listing
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    Oakbrook Terrace, IL 60181
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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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    1 Transam Plaza Dr, Oakbrook Terrace, IL, 60181
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