Add Listing
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

    621 21st St Oakland, CA 94606-5408

    • Apartment buildings
    • 2,927 SF
    • 0.11 lot acres
    OFF-MARKET
    Last Sale
    Nov 19, 2024
    $738,000
    Value Estimations
    $775,000
    Show details
    Cap Rate Potential
    Location Intelligence
    Property ID
    US09-8376396
    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

    • Apartment buildings

    Property Details for 621 21st St

    Year built
    1921
    Construction
    WOOD
    Lot size
    0.11 lot acres
    Property size
    2,927 SF
    Property type
    Apartment buildings
    APN
    21-275-29
    APU
    2127529

    Value Estimations

    based on Realmo’s proprietary methodology

    • CAP approach

      CAP Return
      Estimation
      6%
      $960,000
      6.5%
      $885,000
      7%
      $820,000

    • Comparable approach

      Method
      Estimation
      Statistic Estimate
      $738,000
      Market price range: $311k - $738k

    • Alternative Use

      Use
      Estimation
      APARTMENT HOUSE (5+ UNITS)
      $530,000
      Current use
      NEIGHBORHOOD: SHOPPING CENTER
      $1,245,000
      Change: +134% Conversion: Difficult
      MEDICAL BUILDING
      $985,000
      Change: +85% Conversion: Moderate
      OFFICE BUILDING
      $705,000
      Change: +33% Conversion: Moderate
      RETAIL STORES
      $695,000
      Change: +31% Conversion: Difficult
      AUTO REPAIR, GARAGE
      $550,000
      Change: +3% Conversion: Difficult

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

    Location Insight

    • Map
    • Local Demand
    City
    Oakland
    County
    Alameda
    State
    California
    Longitude
    -122.246
    Latitude
    37.7991
    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
    2023
    $6,513
    $300,000
    $700,000
    $1,000,000
    -
    $0.00
    $0.00
    $0.00

    Comparable in this City

    • Value Estimation
      $575,000
      10,170 SF

      2624 8th Ave

      APARTMENT HOUSE (5+ UNITS) • 10,170 SF
      2624 8th Ave, Oakland, CA 94606-2183
      View Details
    • Value Estimation by Request
      7,281 SF

      2710 9th Ave

      APARTMENT HOUSE (5+ UNITS) • 7,281 SF
      2710 9th Ave, Oakland, CA 94606-2186
      View Details
    • Value Estimation
      $2,805,000
      21,474 SF

      201 Athol Ave

      APARTMENT HOUSE (5+ UNITS) • 21,474 SF
      201 Athol Ave, Oakland, CA 94606-1374
      View Details
    • Value Estimation
      $1,145,000
      9,021 SF

      257 Athol Ave

      APARTMENT HOUSE (5+ UNITS) • 9,021 SF
      257 Athol Ave, Oakland, CA 94606-1342
      View Details
    • Value Estimation
      $1,185,000
      7,264 SF

      1516 1st Ave

      APARTMENT HOUSE (5+ UNITS) • 7,264 SF
      1516 1st Ave, Oakland, CA 94606-1652
      View Details
    • Value Estimation
      $1,985,000
      13,585 SF

      224 15th St

      APARTMENT HOUSE (5+ UNITS) • 13,585 SF
      224 15th St, Oakland, CA 94606-1777
      View Details

    Similar Nearby for Sale

    • $1,280,000

      Oakland Multifamily Investment Opportunity

      Multi-unit property near BART with income potential in Oakland.
      2116 International Blvd, Oakland, CA 94606
      View Details
    • $1,220,000
      3,032 SF

      Oakland Multifamily Investment Opportunity

      Five-unit property with potential for increased rental income.
      2138 19Th Ave, Oakland, CA 94606
      View Details
    • $2,700,000
      12,480 SF

      Oakland Multifamily Investment Opportunity

      Spacious 18-unit apartment building in Oakland's vibrant Clinton neighborhood.
      10Th Ave, Oakland, CA 94606
      View Details
    • $1,550,000
      6,693 SF

      Oakland Multifamily Investment Opportunity

      Eight-unit property in Oakland, CA, ideal for multifamily investors.
      1504 13Th Ave, Oakland, CA 94606
      View Details
    • Contact for pricing
      1,626 SF

      Development Opportunity in Oakland, CA

      Prime land with flexible development potential in a central location.
      1901 Park Blvd, Oakland, CA 94606
      View Details
    • $1,395,000
      9,352 SF

      Oakland Multifamily Investment Opportunity

      Thirteen-unit property near Downtown Oakland with value-add potential.
      1736 23Rd Ave, Oakland, CA 94606
      View Details

    Similar Nearby for Lease

    • $950 /Mo
      2,275 SF

      Oakland Flex Industrial Suites

      Newly renovated flex-industrial suites available for lease in Oakland.
      Calcot Pl, Oakland, CA 94606
      View Details
    • Contact for pricing
      4,000 SF

      Oakland Office Space For Lease

      4,000 SF stand-alone office building, convenient location, abundant parking.
      1946 Embarcadero, Oakland, CA 94606
      View Details
    • $25 SF/Yr
      13,460 SF

      Shell Condition Office Space

      Office space in shell condition, near transportation.
      601 12Th St, Oakland, CA 94606
      View Details
    • $1.00 SF/Yr
      3,600 SF

      Oakland Industrial Building with Office

      3,600 SF industrial building with office space for lease.
      1828 International Blvd, Oakland, CA 94606
      View Details
    • Contact for pricing
      28,000 SF

      Oakland Warehouse with Dock Doors

      28,000 SF warehouse with 10 dock doors for lease.
      1905 Dennison St, Oakland, CA 94606
      View Details
    • $3 SF/Yr

      Oakland Office Space Available

      Office space available for lease in Oakland, California.
      11 Embarcadero Cv, Oakland, CA 94606
      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.
    621 21st St
    Oakland, CA 94606-5408
    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.
    Sign Up Successful!
    You now have access to more from Realmo!