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    The Largest CRE Database in the US with Over 1 Million Listings
    Property profile & analytics

    660 Mason Rdg Ctr Dr Saint Louis, MO 63141-8557

    • Office buildings
    • 139,075 SF
    • 7.97 lot acres
    OFF-MARKET
    Value Estimations
    $15,065,000
    Show details
    Cap Rate Potential
    Location Intelligence
    Property ID
    US48-1062728
    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

    • Office buildings

    Property Details for 660 Mason Rdg Ctr Dr

    Year built
    1980
    Lot size
    7.97 lot acres
    Property size
    139,075 SF
    Zone code
    83O
    Property type
    Office buildings
    APN
    19P-3-3-009-0
    APU
    19P330090

    Value Estimations

    based on Realmo’s proprietary methodology

    • Comparable approach

      Method
      Estimation
      Statistic Estimate
      $18,186,000
      Market price range: $17.1M - $36.5M
      AI Estimate
      $13,340,000
      Market price range: $3.31M - $30.8M

    • Alternative Use

      Use
      Estimation
      OFFICE BUILDING
      $24,475,000
      Current use
      RETAIL STORES
      $21,735,000
      Change: -11% Conversion: Moderate
      MEDICAL BUILDING
      $21,430,000
      Change: -12% Conversion: Easy

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

    Location Insight

    • Map
    • Local Demand
    City
    Saint Louis
    County
    St. Louis
    State
    Missouri
    Longitude
    -90.4737
    Latitude
    38.6398
    CBSA code
    41180
    CBSA name
    ST. LOUIS, MO-IL 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
    $198,921
    $566,590
    $3,115,870
    $3,682,460
    -
    $1,770,600
    $9,737,100
    $11,507,700

    Comparable in this City

    • Value Estimation
      $4,790,000
      21,000 SF

      1030 Woodcrest Ter Dr

      OFFICE BUILDING • 21,000 SF
      1030 Woodcrest Ter Dr, Saint Louis, MO 63141-5054
      View Details
    • Value Estimation
      $10,195,000
      44,721 SF

      555 Maryville University Dr

      OFFICE BUILDING (MULTI-STORY) • 44,721 SF
      555 Maryville University Dr, Saint Louis, MO 63141-5858
      View Details
    • Value Estimation
      $8,520,000
      37,363 SF

      500 Maryville University Dr

      OFFICE BUILDING • 37,363 SF
      500 Maryville University Dr, Saint Louis, MO 63141-5833
      View Details
    • Value Estimation
      $5,540,000
      24,304 SF

      12901 40th Dr

      OFFICE BUILDING • 24,304 SF
      12901 40th Dr, Saint Louis, MO 63141-8634
      View Details
    • Value Estimation
      $1,475,000
      25,725 SF

      777 Craig Rd

      OFFICE BUILDING • 25,725 SF
      777 Craig Rd, Saint Louis, MO 63141-7276
      View Details
    • Value Estimation
      $8,515,000
      17,914 SF

      11525 Olde Cabin Rd

      OFFICE BUILDING • 17,914 SF
      11525 Olde Cabin Rd, Saint Louis, MO 63141-7146
      View Details

    Similar Nearby for Sale

    • Contact for pricing
      22,350 SF

      Remodeled Office Building on Olive

      22,350 SF office building with strong demographics and traffic.
      St, Louis, MO 63141
      View Details
    • Contact for pricing
      71,805 SF

      Creve Coeur Class B Office

      71,805 SF Class B office building near amenities.
      12755 Olive Blvd St, Louis, MO 63141
      View Details
    • Contact for pricing
      63,030 SF

      Creve Coeur Former HQ Property

      High-end office building with divisible floorplates and ample parking.
      9990 Old Olive Street Rd, Saint Louis, MO 63141
      View Details
    • Contact for pricing
      51,545 SF

      Class B Office Building

      Class B office building with renovated common areas and covered parking.
      12101 Woodcrest Executive Dr, Saint Louis, MO 63141
      View Details
    • $239,000
      1,409 SF

      Executive Office Suite, St. Louis

      Prime St. Louis Office, 1409 sq ft, $239k
      11 The Pne Ct #A St, St. Louis, MO 63141
      View Details
    • $2,200,000
      17,820 SF

      Creve Coeur Commercial Property

      Two-story building on N. Lindbergh Blvd in St. Louis.
      295 N Lindbergh Blvd St, Louis, MO 63141
      View Details

    Similar Nearby for Lease

    • $24 SF/Yr
      32,461 SF

      Creve Coeur Office Building

      Office building in thriving business district with convenient amenities.
      Creve Couer, Saint Louis, MO 63141
      View Details
    • $18 SF/Yr
      72,669 SF

      Class B Office Building For Rent

      Class B office building with updated common areas and ample parking.
      12747 Olive Blvd St, Louis, MO 63141
      View Details
    • $23 SF/Yr
      119,612 SF

      Class A Office Building

      Premier office space in Creve Coeur with modern amenities.
      12400 Olive Blvd, Saint Louis, MO 63141
      View Details
    • $25 SF/Yr
      11,355 SF

      Creve Coeur Executive Office Space

      Class A Office, 11,355 SF Available
      844 New Ballas Ct, Creve Coeur, MO 63141
      View Details
    • $19 SF/Yr

      Westchase Office Space Available

      Creve Coeur Office Building, 4 Suites Available
      10845 Olive Blvd, Creve Coeur, MO 63141
      View Details
    • $25 SF/Yr
      101,227 SF

      717 Office Parkway: Prime St. Louis Office Space

      St. Louis County Office Building: Multiple Suites Available, Newly Renovated.
      717 Office Pkwy, Creve Coeur, MO 63141
      View Details
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    Saint Louis, MO 63141-8557
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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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