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

    623 Main St Longmont, CO 80501-4918

    • Office buildings
    • 1,556 SF
    • 0.09 lot acres
    OFF-MARKET
    Value Estimations
    Cap Rate Potential
    Location Intelligence
    Property ID
    US13-0635926
    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

    • Martha Martin Business Services / Tax Preparation

    Property Details for 623 Main St

    Year built
    1910
    Construction
    CONCRETE BLOCKS
    Lot size
    0.09 lot acres
    Property size
    1,556 SF
    Zone code
    2134
    Property type
    Office buildings
    APN
    1315-03-2-09-019
    APU
    131503209019

    Value Estimations

    based on Realmo’s proprietary methodology

    • AI approach

    • CAP approach

    • Comparable approach

    • Alternative Use

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

    Location Insight

    • Map
    • Local Demand
    City
    Longmont
    County
    Boulder
    State
    Colorado
    Longitude
    -105.103
    Latitude
    40.1699
    CBSA code
    14500
    CBSA name
    BOULDER, CO 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
    $11,412
    $75,944
    $47,291
    $123,235
    -
    $272,200
    $169,500
    $441,700

    Comparable in this City

    • Value Estimation by Request
      1,864 SF

      620 Kimbark St

      OFFICE BUILDING • 1,864 SF
      620 Kimbark St, Longmont, CO 80501-4911
      View Details
    • Value Estimation
      $1,235,000
      5,512 SF

      2080 Main St

      OFFICE BUILDING • 5,512 SF
      2080 Main St, Longmont, CO 80501-1916
      View Details
    • Value Estimation
      $2,430,000
      16,613 SF

      1375 Ken Pratt Blvd

      OFFICE BUILDING • 16,613 SF
      1375 Ken Pratt Blvd, Longmont, CO 80501-6325
      View Details
    • Value Estimation
      $555,000
      2,647 SF

      627 Kimbark St

      OFFICE BUILDING • 2,647 SF
      627 Kimbark St, Longmont, CO 80501-4910
      View Details
    • Value Estimation by Request
      1,566 SF

      22 Main St

      OFFICE BUILDING • 1,566 SF
      22 Main St, Longmont, CO 80501-6200
      View Details
    • Value Estimation by Request
      2,250 SF

      237 Main St

      OFFICE BUILDING • 2,250 SF
      237 Main St, Longmont, CO 80501-5914
      View Details

    Similar Nearby for Sale

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      Single-Story Office Building on Coffman

      Single-story office building with updated amenities and access to Main.
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    • $1,490,000
      7,204 SF

      Longmont Office Building - Prime Location

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    • $140,000
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      Longmont Office Condo For Sale

      Second-floor office condo near Main Street with ample parking.
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    • $1,200,000
      5,276 SF

      Ground-Level Office/Retail Space Available

      Updated office/retail space with frontage on Coffman Street.
      418 Coffman St, Longmont, CO 80501
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    • $840,000
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      Downtown Longmont Executive Office Condo

      Prime Longmont Office Space - Vacant or Owner-Occupied
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      Longmont Flex Space Investment

      11,680 SF Flex Office, Multi-Tenant
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    Similar Nearby for Lease

    • $16 SF/Yr
      6,411 SF

      Class A Office Space Available

      Upscale Longmont office building with modern amenities for rent.
      2101 Ken Pratt Blvd, Longmont, CO 80501
      View Details
    • $19 SF/Yr
      3,254 SF

      Prime Longmont Executive Suites

      Historic Charm, Modern Office Space
      356-1/2 Main St, Longmont, CO 80501
      View Details
    • $189 SF/Yr
      7,500 SF

      Longmont Flex Space: Sunset Place

      Industrial Flex Space, 3,750 SF Available
      1823 Sunset Pl, Longmont, CO 80501
      View Details
    • $10 SF/Yr
      20,090 SF

      Coyote Run Office Space for Lease

      Longmont, CO executive suites available
      255 Weaver Park Rd, Longmont, CO 80501
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    • $15 SF/Yr
      2,797 SF

      Longmont Office Space for Lease

      Prime Longmont location, flexible terms.
      202 Main St, Longmont, CO 80501
      View Details
    • $850 /Mo
      165 SF

      Class A Office Space Available

      Longmont Class A office space with mountain views for rent.
      825 Delaware Ave, Longmont, CO 80501
      View Details
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    623 Main St
    Longmont, CO 80501-4918
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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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