Sign Up Successful!
You now have access to more from Realmo!
Property Lookup
    Property Lookup
    • For Sale
    • For Lease
    • Recently Sold
    • Property Lookup
    • Brokers
    AI Search
    Back to Search
    The Largest CRE Database in the US with Over 1 Million Listings
    Property profile & analytics

    21320 Golden Spgs Dr Diamond Bar, CA 91789-3926

    • Warehouses
    • 18,093 SF
    • 3.18 lot acres
    OFF-MARKET
    Value Estimations
    $1,905,000
    Show details
    Cap Rate Potential
    Location Intelligence
    Property ID
    US09-1766834
    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

    • Warehouses

    Property Details for 21320 Golden Spgs Dr

    Year built
    1980
    Lot size
    3.18 lot acres
    Property size
    18,093 SF
    Zone code
    LCM1DP*
    Property type
    Warehouses
    Property subtype
    Self storage facilities
    APN
    8763-001-033
    APU
    8763001033

    Value Estimations

    based on Realmo’s proprietary methodology

    • CAP approach

      CAP Return
      Estimation
      6%
      $2,825,000
      6.5%
      $2,610,000
      7%
      $2,425,000

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

    Location Insight

    • Map
    • Local Demand
    City
    Diamond Bar
    County
    Los Angeles
    State
    California
    Longitude
    -117.839
    Latitude
    34.0002
    CBSA code
    31080
    CBSA name
    LOS ANGELES-LONG BEACH-ANAHEIM, 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
    2015
    $0.00
    $201,641
    $1,673,559
    $1,875,200
    -
    $0.00
    $0.00
    $0.00

    Comparable in this City

    • Value Estimation
      $21,545,000
      254,057 SF

      921 Fairway Dr

      MINI-WAREHOUSE, STORAGE • 254,057 SF
      921 Fairway Dr, Walnut, CA 91789-2826
      View Details
    • Value Estimation
      $14,270,000
      102,461 SF

      921 Fairway Dr

      MINI-WAREHOUSE, STORAGE • 102,461 SF
      921 Fairway Dr, Walnut, CA 91789
      View Details
    • Value Estimation
      $12,395,000
      18,093 SF

      21320 Golden Spgs Dr

      MINI-WAREHOUSE, STORAGE • 18,093 SF
      21320 Golden Spgs Dr, Diamond Bar, CA 91789-3926
      View Details
    • Value Estimation
      $10,200,000
      96,828 SF

      19937 Walnut S Dr

      MINI-WAREHOUSE, STORAGE • 96,828 SF
      19937 Walnut S Dr, Walnut, CA 91789-2823
      View Details
    • Value Estimation
      $5,930,000
      60,610 SF

      301 Lemon Crk Dr

      MINI-WAREHOUSE, STORAGE • 60,610 SF
      301 Lemon Crk Dr, Walnut, CA 91789-2646
      View Details
    • Value Estimation
      $4,410,000
      50,400 SF

      3859 Vly Blvd

      MINI-WAREHOUSE, STORAGE • 50,400 SF
      3859 Vly Blvd, Walnut, CA 91789-1516
      View Details

    Similar Nearby for Sale

    • $4,279,000
      2,100 SF

      Walnut Industrial Land - U-Haul Site

      0.96-acre lot, 2,100 sqft buildings, U-Haul tenant.
      424 Lemon Ave, Walnut, CA 91789
      View Details
    • $2,298,000

      Walnut Industrial Property For Sale

      Industrial property available for sale in Walnut, California.
      21117 Commerce Point Dr, Walnut, CA 91789
      View Details
    • Contact for pricing
      900 SF

      19861 Blvd, Walnut, CA 91789

      Mixed-use properties • 900 SF
      19861 Blvd, Walnut, CA 91789
      View Details
    • $699,000

      Land For Sale

      Land available for sale.
      387 Bourdet St, Walnut, CA 91789
      View Details
    • $4,279,000
      41,698.00 Acres

      Walnut, CA Land For Sale

      Commercial land available in Walnut, California.
      424 S Lemon Ave, Walnut, CA 91789
      View Details
    • $138,000

      Land For Sale

      Land available for sale.
      3745 Valley Blvd, Walnut, CA 91789
      View Details

    Similar Nearby for Lease

    • $1.68 SF/Yr
      9,998 SF

      Stand-Alone Building with Fenced Yard

      Stand-alone building with fenced yard, near freeway, well-maintained.
      21068 Commerce Pointe Dr, Walnut, CA 91789
      View Details
    • $1.55 SF/Yr
      1,136 SF

      Small Warehouse Space Available

      Small warehouse space with 14' clear height available for rent.
      618 Brea Canyon Rd, Walnut, CA 91789
      View Details
    • $1.70 SF/Yr
      3,088 SF

      Small Industrial Unit For Sublease

      2,338 SF industrial unit available for sublease through 10/31/2027.
      817 South Lemon Ave, Walnut, CA 91789
      View Details
    • Contact for pricing
      297,310 SF

      Prime Walnut Creek Office/Industrial Campus

      Massive space, flexible lease terms, ideal location.
      218 Machlin Ct, City of Industry, CA 91789
      View Details
    • $1.70 SF/Yr
      6,960 SF

      Harrison Avenue Warehouse Space Available

      Warehouse space with loading docks and office available for lease.
      19953 Harrison Ave, Walnut, CA 91789
      View Details
    • $1.65 SF/Yr
      7,181 SF

      Walnut Warehouse with Office Space

      Industrial warehouse featuring office space, dock, and ground loading.
      19941 Harrison Ave, Walnut, CA 91789
      View Details
    Request Owner's contact information
    Message sent successfully
    Error
    If you are the owner or broker of this property and would like to edit or remove this listing please send a message to web site administrator.
    21320 Golden Spgs Dr
    Diamond Bar, CA 91789-3926
    Message sent successfully
    Error
    Email to Your Friends
    Link copied to clipboard
    Separate multiple addresses with a comma
    Message sent successfully
    Error

    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
    Thanks! Your message was sent.
    Error! Your message wasn't sent.
    Please enter your name
    Please enter email
    Please enter the email in the correct format
    Please enter phone
    Please enter the number in the correct format
    Please enter message
    Thank You

    You are Unsubscribed From Notifications

    Google sign-in failed. Please try again or use another login method.