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    Property profile & analytics

    643 Waltham St Lexington, MA 02421-7901

    • Investment properties
    • 1,586 SF
    • 5.75 lot acres
    OFF-MARKET
    Value Estimation
    $1,545,000
    Last Sale
    Sep 20, 2023
    $1,500,000
    Location Intelligence
    Property ID
    US38-0748002
    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

    • White House Gardens / Garden

    Property Details for 643 Waltham St

    Year built
    1915
    Lot size
    5.75 lot acres
    Property size
    1,586 SF
    Zone code
    RO
    Property type
    Investment properties
    Property subtype
    Live-work space
    APN
    LEXI M:0024 L:000070
    APU
    LEXIM0024L000070

    Value Estimation

    by Realmo proprietary methodology Last update: July 3, 2025

    • AI approach

      CAP return
      Estimation
      Estimation
      $1,620,000

    • CAP approach

      CAP return
      Estimation
      6%
      $1,415,000
      6.5%
      $1,410,000
      7%
      $1,620,000

    • Comparable approach

      Method
      Estimation
      Relative Method
      $1,545,000
      Geo Method
      $1,720,000

    • Alternative Use

      Use
      Estimation
      Distribution
      $1,245,000
      Retail
      $1,220,000
      Mixed-Use
      $1,265,000
      Hospitality
      $1,130,000
      Educational
      $1,150,000
      Residential Income
      $1,495,000
      Energy
      $1,290,000
      Income-Based Land
      $1,375,000
      Food Service
      $1,265,000

    Location Insight

    • Map
    • Local Demand
    City
    Lexington
    County
    Middlesex
    State
    Massachusetts
    Longitude
    -71.2325
    Latitude
    42.4281
    CBSA code
    14460
    CBSA name
    BOSTON-CAMBRIDGE-QUINCY, MA-NH 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
    2024
    $0.00
    $1,464,000
    $136,000
    $1,600,000
    -
    $0.00
    $0.00
    $0.00

    Comparable in this City

    • Value Estimation by Request
      2,907 SF

      329 Marrett Rd

      OFFICE/RESIDENTIAL (MIXED USE) • 2,907 SF
      329 Marrett Rd, Lexington, MA 02421-7936
      View Details
    • Value Estimation by Request
      2,501 SF

      331 Concord Ave

      OFFICE/RESIDENTIAL (MIXED USE) • 2,501 SF
      331 Concord Ave, Lexington, MA 02421-8126
      View Details
    • Value Estimation by Request
      86,532 SF

      115 Hartwell Ave

      CONDOMINIUMS (INDUSTRIAL) • 86,532 SF
      115 Hartwell Ave, Lexington, MA 02421-3125
      View Details
    • Value Estimation by Request
      23,606 SF

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      OFFICE BUILDING • 23,606 SF
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    • Value Estimation by Request
      1,576 SF

      1 Militia Dr, Unit 303

      CONDOMINIUM OFFICES • 1,576 SF
      1 Militia Dr, Lexington, MA 02421-4704
      View Details
    • Value Estimation by Request
      46,366 SF

      125 Spg St

      INDUSTRIAL (GENERAL) • 46,366 SF
      125 Spg St, Lexington, MA 02421-7801
      View Details

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    • Contact for pricing
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    Similar Nearby for Lease

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      Class A office and lab space with on-site amenities.
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    • Contact for pricing
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      Lexington Office/R&D Sublease Opportunity

      30,000-69,154 SF fully furnished office/R&D space for sublease.
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      View Details
    • $750 /Mo
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      Restored Victorian property in Lexington Center with unique office spaces.
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    643 Waltham St
    Lexington, MA 02421-7901
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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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