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    Property profile & analytics

    1028 Diablo St Clayton, CA 94517-1359

    • Office buildings
    • 2,040 SF
    • 0.15 lot acres
    OFF-MARKET
    Value Estimations
    Cap Rate Potential
    Location Intelligence
    Property ID
    US09-0458532
    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

    • Cathy Pate - America First Real Estate Services, Inc. / Real Estate Agency
    • Derek Oatley, Realtor / Real Estate Agency
    • Pavilion Plaza / Business Service Center / Corporate Office
    • Weichert Realtors / Real Estate Agency
    • Linda Miller- Weichert America First Realtor / Real Estate Agency

    Property Details for 1028 Diablo St

    Year built
    1968
    Lot size
    0.15 lot acres
    Property size
    2,040 SF
    Property type
    Office buildings
    APN
    119-014-006-9
    APU
    1190140069

    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
    Clayton
    County
    Contra Costa
    State
    California
    Longitude
    -121.936
    Latitude
    37.9408
    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
    $3,461
    $57,071
    $112,849
    $169,920
    -
    $0.00
    $0.00
    $0.00

    Comparable in this City

    • Value Estimation
      $820,000
      5,204 SF

      6055 Main St

      OFFICE BUILDING • 5,204 SF
      6055 Main St, Clayton, CA 94517-1203
      View Details
    • Value Estimation
      $2,465,000
      13,579 SF

      1026 Oak St

      OFFICE BUILDING • 13,579 SF
      1026 Oak St, Clayton, CA 94517-1363
      View Details
    • Value Estimation
      $1,120,000
      6,645 SF

      6160 Ctr St

      OFFICE BUILDING • 6,645 SF
      6160 Ctr St, Clayton, CA 94517-1398
      View Details
    • Value Estimation by Request
      1,395 SF

      6054 Main St

      OFFICE BUILDING • 1,395 SF
      6054 Main St, Clayton, CA 94517-1205
      View Details
    • Value Estimation by Request
      2,240 SF

      6200 Center St

      Office properties & Spaces • 2,240 SF
      6200 Center St, Clayton, CA 94517
      View Details
    • Value Estimation by Request
      1,640 SF

      6123 Main St

      MEDICAL BUILDING • 1,640 SF
      6123 Main St, Clayton, CA 94517-1201
      View Details

    Similar Nearby for Sale

    • Contact for pricing

      Land with Development Potential

      Land in central Clayton with two existing homes.
      6070 Center St, Clayton, CA 94517
      View Details
    • $599,000

      Downtown Clayton Land Opportunity

      Land parcel in downtown Clayton with mixed-use development potential.
      Center St, Clayton, CA 94517
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    • Contact for pricing

      87 Acres Near Mt. Diablo

      Pristine land near Mt. Diablo with development potential.
      3300 Bragdon Way, Clayton, CA 94517
      View Details

    Similar Nearby for Lease

    • Contact for pricing
      2,240 SF

      Downtown Clayton Office/Retail Space

      Two-story building in historic downtown Clayton with ample parking.
      6200 Center St, Clayton, CA 94517
      View Details
    • $2.00 SF/Yr
      13,579 SF

      Downtown Clayton Retail/Office Opportunity

      Retail and office suites available in downtown Clayton.
      1026 Oak St, Clayton, CA 94517
      View Details
    • $2.00 SF/Yr

      Downtown Clayton Retail/Office Opportunity

      Retail/office suites in downtown Clayton, near amenities and developments.
      1026 Oak St, Clayton, CA 94517
      View Details
    • Contact for pricing
      2,240 SF

      Downtown Clayton Retail/Office Space

      Two-story building with retail and office space for lease.
      6200 Center St, Clayton, CA 94517
      View Details
    • Contact for pricing
      2,916 SF

      Retail Space in Clayton Center

      Retail space available in a busy shopping center.
      1530 Kirker Pass Rd, Clayton, CA 94517
      View Details
    • Contact for pricing
      1,621 SF

      Retail Space in Clayton Center

      Retail space available in a busy shopping center.
      5435 Clayton Rd, Clayton, CA 94517
      View Details
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    1028 Diablo St
    Clayton, CA 94517-1359
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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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