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    Property profile & analytics

    3500 18th St Antioch, CA 94509-7378

    • Retail space
    • 4,168 SF
    • 0.94 lot acres
    OFF-MARKET
    Value Estimations
    $600,000
    Show details
    Cap Rate Potential
    Location Intelligence
    Property ID
    US09-1988784
    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

    • Gotcha Bait & Tackle, Inc. / (Bike/Boat/Book/etc) Store

    Property Details for 3500 18th St

    Year built
    1940
    Lot size
    0.94 lot acres
    Property size
    4,168 SF
    Zone code
    LI
    Property type
    Retail space
    APN
    051-200-058-9
    APU
    512000589

    Value Estimations

    based on Realmo’s proprietary methodology

    • Comparable approach

      Method
      Estimation
      Statistic Estimate
      $758,000
      Market price range: $344k - $879k
      AI Estimate
      $452,000
      Market price range: $167k - $603k

    • Alternative Use

      Use
      Estimation
      RETAIL STORES
      $655,000
      Current use

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

    Location Insight

    • Map
    • Local Demand
    City
    Antioch
    County
    Contra Costa
    State
    California
    Longitude
    -121.758
    Latitude
    38.0045
    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
    2024
    $7,761
    $327,939
    $304,103
    $632,042
    -
    $0.00
    $0.00
    $0.00

    Comparable in this City

    • Value Estimation by Request
      1,040 SF

      1600 G St

      RETAIL STORES (PERSONAL SERVICES) • 1,040 SF
      1600 G St, Antioch, CA 94509-2245
      View Details
    • Value Estimation
      $1,870,000
      16,577 SF

      2752 Tregallas Rd

      RETAIL STORES (PERSONAL SERVICES) • 16,577 SF
      2752 Tregallas Rd, Antioch, CA 94509-4912
      View Details
    • Value Estimation by Request
      2,628 SF

      707 10th St

      RETAIL STORES (PERSONAL SERVICES) • 2,628 SF
      707 10th St, Antioch, CA 94509-1560
      View Details
    • Value Estimation
      $1,615,000
      16,160 SF

      1825 10th St

      RETAIL STORES (PERSONAL SERVICES) • 16,160 SF
      1825 10th St, Antioch, CA 94509-1305
      View Details
    • Value Estimation
      $915,000
      7,463 SF

      907 10th St, Unit 913

      RETAIL STORES (PERSONAL SERVICES) • 7,463 SF
      907 10th St, Antioch, CA 94509-1564
      View Details
    • Value Estimation
      $970,000
      8,000 SF

      414 2nd St

      RETAIL STORES (PERSONAL SERVICES) • 8,000 SF
      414 2nd St, Antioch, CA 94509-1267
      View Details

    Similar Nearby for Sale

    • Contact for pricing
      17,000 SF

      Retail Property with Lease in Place

      Retail property with lease in place until April 2029.
      2701 W 10Th St, Antioch, CA 94509
      View Details
    • $499,900

      Mixed-Use Property in Antioch, CA

      Mixed-use property with residential and commercial income potential in Antioch.
      201 Rossi Ave, Antioch, CA 94509
      View Details
    • $1,549,900
      4,363 SF

      Mixed-Use Property in Antioch, CA

      Operating restaurant, grocery store, and residential apartment in one property.
      1903 D St, Antioch, CA 94509
      View Details
    • $1,150,000
      4,363 SF

      Mixed-Use Property with Established Business

      Operating restaurant, grocery store, and apartment in one property.
      1903 D St, Antioch, CA 94509
      View Details
    • Contact for pricing

      Retail Center and Development Site

      Retail center anchored by Smart & Final on 11.61 acres.
      2638 Somersville Rd, Antioch, CA 94509
      View Details
    • Contact for pricing
      747 SF

      Antioch Office Suite: Prime Location

      Spacious office, great visibility, utilities included.
      320 St Unit D, Antioch, CA 94509
      View Details

    Similar Nearby for Lease

    • Contact for pricing
      6,203 SF

      Retail Space on Lone Tree

      In-line retail space available for rent.
      3640-3670 Lone Tree Way, Antioch, CA 94509
      View Details
    • Contact for pricing
      2,263 SF

      Retail Space Available For Rent

      Retail space available for lease in Antioch, California.
      3110 Buchanan Rd, Antioch, CA 94509
      View Details
    • $11 SF/Yr

      Downtown Antioch Retail/Office Space

      Retail and office spaces available in downtown Antioch.
      601 W 2Nd St, Antioch, CA 94509
      View Details
    • $0.18 SF/Yr

      Retail, Medical & Office Space

      Lease retail, medical, and office spaces near Somersville Towne Center.
      3600-3698 Delta Fair Blvd, Antioch, CA 94509
      View Details
    • Contact for pricing
      840 SF

      Retail Space in Antioch Center

      Retail space anchored by Lucky Supermarkets in Antioch, California.
      3100-3190 Contra Loma Blvd, Antioch, CA 94509
      View Details
    • Contact for pricing
      784 SF

      Retail Space Near eBART

      Retail space available near the East Contra Costa BART station.
      2743 Hillcrest Ave, Antioch, CA 94509
      View Details
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    3500 18th St
    Antioch, CA 94509-7378
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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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