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    Property profile & analytics

    121 31st St National City, CA 91950-7333

    • Retail space
    • 2,706 SF
    • 0.39 lot acres
    OFF-MARKET
    Value Estimations
    $565,000
    Show details
    Cap Rate Potential
    Location Intelligence
    Property ID
    US09-7652039
    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

    • Bilateral Safety Corridor Coalition / Government
    • Latin America Alliance / Visa Consulting Service
    • Grupo Bajacon S de RL de CV / Government Office
    • Border Health Initiative / Charitable Organization / Social Service Agency

    Property Details for 121 31st St

    Year built
    1959
    Lot size
    0.39 lot acres
    Property size
    2,706 SF
    Zone code
    COMMERCIAL
    Property type
    Retail space
    APN
    562-251-07-00
    APU
    5622510700

    Value Estimations

    based on Realmo’s proprietary methodology

    • CAP approach

      CAP Return
      Estimation
      6%
      $710,000
      6.5%
      $655,000
      7%
      $605,000

    • Comparable approach

      Method
      Estimation
      AI Estimate
      $435,000
      Market price range: $136k - $462k

    • Alternative Use

      Use
      Estimation
      RETAIL STORES
      $670,000
      Current use
      AUTO REPAIR, GARAGE
      $545,000
      Change: -19% Conversion: Difficult

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

    Location Insight

    • Map
    • Local Demand
    City
    National City
    County
    San Diego
    State
    California
    Longitude
    -117.098
    Latitude
    32.6567
    CBSA code
    41740
    CBSA name
    SAN DIEGO-CARLSBAD-SAN MARCOS, 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
    2024
    $9,955
    $447,372
    $364,140
    $811,512
    -
    $0.00
    $0.00
    $0.00

    Comparable in this City

    • Value Estimation by Request
      1.94 Acres

      National City Blvd

      RETAIL STORES (PERSONAL SERVICES) • 1.94 Acres
      National City Blvd, National City, CA 91950
      View Details
    • Value Estimation
      $565,000
      2,935 SF

      590 Highland Ave

      RETAIL STORES (PERSONAL SERVICES) • 2,935 SF
      590 Highland Ave, National City, CA 91950
      View Details
    • Value Estimation
      $1,450,000
      9,996 SF

      1810 Highland Ave, Unit 22

      RETAIL STORES (PERSONAL SERVICES) • 9,996 SF
      1810 Highland Ave, National City, CA 91950-5831
      View Details
    • Value Estimation
      $1,100,000
      6,390 SF

      1940 National City Blvd

      RETAIL STORES (PERSONAL SERVICES) • 6,390 SF
      1940 National City Blvd, National City, CA 91950-5520
      View Details
    • Value Estimation
      $3,085,000
      25,899 SF

      1401 Plz Blvd

      RETAIL STORES (PERSONAL SERVICES) • 25,899 SF
      1401 Plz Blvd, National City, CA 91950-3613
      View Details
    • Value Estimation
      $990,000
      4,728 SF

      1860 Sweetwater Rd

      RETAIL STORES (PERSONAL SERVICES) • 4,728 SF
      1860 Sweetwater Rd, National City, CA 91950-7660
      View Details

    Similar Nearby for Sale

    • Contact for pricing
      3,538 SF

      National City Mixed-Use Building

      Mixed-use building in National City with office, retail potential.
      921 Coolidge Ave, National City, CA 91950
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    • $960,000
      Pending

      Remodeled Mixed-Use Property

      Three detached units plus commercial space with development potential.
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    • $2,400,000

      Mixed-Use Property in National City

      Rare mixed-use property with retail and residential units in National City.
      718 8Th St E 8th, National City, CA 91950
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      3,600 SF

      710 E 8th st, national city

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      2,740 SF

      National City Medical Office Building

      Prime Medical Office, Retail Space in National City
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      National City Retail Center For Sale

      Retail center with high traffic and freeway access.
      1615 E Plaza Blvd, National City, CA 91950
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    Similar Nearby for Lease

    • Contact for pricing
      1,200 SF

      Retail Space Available

      In-line retail space for rent.
      1860 Sweetwater Rd, National City, CA 91950
      View Details
    • Contact for pricing
      2,988 SF

      Retail Space Available

      End cap retail space available for rent.
      1145 Highland Ave, National City, CA 91950
      View Details
    • Contact for pricing
      1,224 SF

      Former Restaurant Space Available

      Restaurant space with excellent visibility in a densely populated area.
      1231-1243 Highland Ave, National City, CA 91950
      View Details
    • Contact for pricing
      996 SF

      Retail Space on E Plaza

      Retail spaces available on a busy thoroughfare with ample parking.
      3403 E Plaza Blvd, National City, CA 91950
      View Details
    • Contact for pricing

      Retail Space for Lease

      Retail space available for lease in National City, CA.
      925 East Plaza Blvd, National City, CA 91950
      View Details
    • Contact for pricing
      2,880 SF

      Retail Space in National City

      Retail space available for lease in National City, CA.
      3410 Highland Ave, National City, CA 91950
      View Details
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    121 31st St
    National City, CA 91950-7333
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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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