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    Property profile & analytics

    12 Putnam Ave, Unit 40 Cos Cob, CT 06807

    • Medical offices
    • 8,000 SF
    • 0.54 lot acres
    OFF-MARKET
    Value Estimation
    Location Intelligence
    Property ID
    US15-0732917
    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

    • Medical offices

    Property Details for 12 Putnam Ave

    Year built
    1976
    Construction
    FRAME
    Lot size
    0.54 lot acres
    Property size
    8,000 SF
    Zone code
    R-7
    Property type
    Medical offices
    Property subtype
    Medical centers
    APN
    GREE M:08 B:1594/S
    APU
    GREEM08B1594S

    Value Estimation

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

    • CAP approach

    • Comparable approach

    • Alternative Use

    Location Insight

    • Map
    • Local Demand
    City
    Cos Cob
    County
    Fairfield
    State
    Connecticut
    Longitude
    -73.6036
    Latitude
    41.0371
    CBSA code
    14860
    CBSA name
    BRIDGEPORT-STAMFORD-NORWALK, CT 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
    $35,839
    $1,787,310
    $1,292,690
    $3,080,000
    -
    $0.00
    $0.00
    $0.00

    Comparable in this City

    • Value Estimation by Request
      1,219 SF

      533 Putnam Ave

      MEDICAL BUILDING • 1,219 SF
      533 Putnam Ave, Cos Cob, CT 06807-2506
      View Details
    • Value Estimation by Request
      13,430 SF

      31 Riv Rd

      MEDICAL BUILDING • 13,430 SF
      31 Riv Rd, Cos Cob, CT 06807-2152
      View Details
    • Value Estimation by Request
      47,957 SF

      122-140 Putnam Ave

      Office Properties & Spaces • 47,957 SF
      122-140 Putnam Ave, Greenwich, CT 06807
      View Details
    • Value Estimation by Request
      14,674 SF

      35 Riv Rd

      OFFICE BUILDING • 14,674 SF
      35 Riv Rd, Cos Cob, CT 06807-2759
      View Details
    • Value Estimation by Request
      14,905 SF

      393-407 Putnam Ave

      Office Properties & Spaces • 14,905 SF
      393-407 Putnam Ave, Greenwich, CT 06807
      View Details
    • Value Estimation by Request
      5,489 SF

      119 Putnam Ave

      OFFICE BUILDING • 5,489 SF
      119 Putnam Ave, Cos Cob, CT 06807-2604
      View Details

    Similar Nearby for Sale

    • $1,200,000

      Cos Cob Two-Family Home

      Two-family residence in Cos Cob with income-generating potential.
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    • $1,575,000

      Buildable Lot with Existing Cottage

      0.52-acre lot with plans for a 4,200 sq. ft. home.
      9 Walnut St, Cos Cob, CT 06807
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    Similar Nearby for Lease

    • Contact for pricing
      5,054 SF

      Cos Cob Office Space Available

      5,054 SF office space with convenient access.
      31 River Rd, Cos Cob, CT 06807
      View Details
    • $4,000 /Mo

      Cos Cob Renovated Duplex

      Renovated 2-bedroom duplex in prime Cos Cob location.
      85 Strickland Rd, Cos Cob, CT 06807
      View Details
    • New
      $5,500 /Mo

      Cos Cob Waterfront Condo Rental

      Updated 2-bedroom condo in waterfront community, convenient to train.
      9 River Road Ext, Cos Cob, CT 06807
      View Details
    • $7,850 /Mo
      3,000 SF

      Furnished Cos Cob Townhouse

      Fully furnished 5-bedroom townhouse with private patio, available immediately.
      92 Valley Rd, Cos Cob, CT 06807
      View Details
    • $2,500 /Mo

      Cos Cob Renovated Apartment

      Renovated 2BR/1BA apartment in Cos Cob with included utilities.
      156 River, Greenwich, CT 06807
      View Details
    • $7,400 /Mo

      New Luxury Residences in Greenwich

      Boutique-style residences with modern amenities in a convenient location.
      100 E Putnam Ave, Greenwich, CT 06807
      View Details
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    12 Putnam Ave, Unit 40
    Cos Cob, CT 06807
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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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