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    Property profile & analytics

    4 Un Sq Union City, CA 94587-3523

    • Office buildings
    • 8,156 SF
    • 0.88 lot acres
    OFF-MARKET
    Value Estimation
    Last Sale
    Feb 08, 2021
    Location Intelligence
    Property ID
    US09-8298090
    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

    • The Epstein Group / Employment Attorney / Labor Relations Attorney
    • BusinessCapitalLenderUnionCity,CA / Business Broker
    • Tenten Travel / Travel Agency
    • Bay Area Optical Schools / Optician
    • Hemo Dialysis Training School / Nursing School

    Property Details for 4 Un Sq

    Year built
    1979
    Construction
    TILT-UP CONCRETE
    Lot size
    0.88 lot acres
    Property size
    8,156 SF
    Property type
    Office buildings
    APN
    87-19-15
    APU
    871915

    Value Estimation

    Powered by Realmo proprietary methodology Last update: July 3, 2025

    • CAP approach

    • Comparable approach

    • Alternative Use

    Location Insight

    • Map
    • Local Demand
    City
    Union City
    County
    Alameda
    State
    California
    Longitude
    -122.019
    Latitude
    37.5909
    CBSA code
    41860
    CBSA name
    SAN FRANCISCO-OAKLAND-FREMONT, CA 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
    $23,787
    $1,086,154
    $688,607
    $1,774,761
    -
    $0.00
    $0.00
    $0.00

    Comparable in this City

    • Value Estimation by Request
      20,400 SF

      30593 Un City Blvd

      OFFICE BUILDING • 20,400 SF
      30593 Un City Blvd, Union City, CA 94587-1515
      View Details
    • Value Estimation by Request
      3,600 SF

      30545 Un City Blvd

      OFFICE BUILDING • 3,600 SF
      30545 Un City Blvd, Union City, CA 94587-1517
      View Details
    • Value Estimation by Request
      15,302 SF

      32145 Alvarado Niles Rd

      OFFICE BUILDING • 15,302 SF
      32145 Alvarado Niles Rd, Union City, CA 94587-2930
      View Details
    • Value Estimation by Request
      6,363 SF

      33641 Msn Blvd

      OFFICE BUILDING • 6,363 SF
      33641 Msn Blvd, Union City, CA 94587-1428
      View Details
    • Value Estimation
      $3,425,000
      16,640 SF

      1780 Whipple Rd

      OFFICE BUILDING • 16,640 SF
      1780 Whipple Rd, Union City, CA 94587-1954
      View Details
    • Value Estimation by Request
      19,059 SF

      2 Un Sq

      OFFICE BUILDING • 19,059 SF
      2 Un Sq, Union City, CA 94587-4495
      View Details

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    Similar Nearby for Lease

    • $3,500 /Mo

      Union City Retail/Office Space

      Spacious unit in Union City's business district, suitable for retail/office.
      30981 Watkins St/, Union City, CA 94587
      View Details
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      1,051 SF

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      Office space for rent with synergistic tenant mix.
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      View Details
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      Office space for rent with synergistic tenant mix.
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    • $3,500 /Mo
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      Union City Retail/Office Space

      Spacious unit in Union City's business district, close to freeways.
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      View Details
    • Contact for pricing
      4,997 SF

      Retail Space in Open-Air Mall

      Retail space available in a large Union City shopping destination.
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    • Contact for pricing
      79,872 SF

      Class A Warehouse Distribution Space

      Large Class A warehouse/distribution space in Alvarado Business Park.
      30336 Whipple Rd, Union City, CA 94587
      View Details

    Property Visit Statistics

    • Visits by month
      44.5k
    • Visitors by month
      24.2k
    • Avg Time on site
      14 min
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    4 Un Sq
    Union City, CA 94587-3523
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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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