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

    521 42nd St Philadelphia, PA 19104-4444

    • Apartment buildings
    • 4,254 SF
    • 0.09 lot acres
    OFF-MARKET
    Value Estimations
    $870,000
    Show details
    Cap Rate Potential
    Location Intelligence
    Property ID
    US73-2282219
    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 521 42nd St

    Year built
    1925
    Construction
    MASONRY/CONCRETE MASONRY UNITS (CMUS)
    Lot size
    0.09 lot acres
    Property size
    4,254 SF
    Zone code
    RTA1
    Property type
    Apartment buildings
    APN
    88-1-6115-50
    APU
    881611550

    Value Estimations

    based on Realmo’s proprietary methodology

    • CAP approach

      CAP Return
      Estimation
      6%
      $1,115,000
      6.5%
      $1,030,000
      7%
      $955,000

    • Comparable approach

      Method
      Estimation
      AI Estimate
      $529,000
      Market price range: $274k - $658k

    • Alternative Use

      Use
      Estimation
      APARTMENT HOUSE (5+ UNITS)
      $1,200,000
      Current use
      OFFICE BUILDING
      $1,080,000
      Change: -10% Conversion: Moderate
      MEDICAL BUILDING
      $1,045,000
      Change: -13% Conversion: Moderate

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

    Location Insight

    • Map
    • Local Demand
    City
    Philadelphia
    County
    Philadelphia
    State
    Pennsylvania
    Longitude
    -75.2067
    Latitude
    39.949
    CBSA code
    37980
    CBSA name
    PHILADELPHIA-CAMDEN-WILMINGTON, PA-NJ-DE-MD 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
    $11,673
    $250,170
    $583,730
    $833,900
    -
    $250,170
    $583,730
    $833,900

    Comparable in this City

    • Value Estimation
      $4,410,000
      22,741 SF

      3862 Lancaster Ave, Unit 68

      APARTMENT HOUSE (5+ UNITS) • 22,741 SF
      3862 Lancaster Ave, Philadelphia, PA 19104-2169
      View Details
    • Value Estimation
      $10,440,000
      53,840 SF

      3965 Lancaster Ave

      APARTMENT HOUSE (5+ UNITS) • 53,840 SF
      3965 Lancaster Ave, Philadelphia, PA 19104-4636
      View Details
    • Value Estimation
      $740,000
      5,520 SF

      4100 Ogden St

      APARTMENT HOUSE (5+ UNITS) • 5,520 SF
      4100 Ogden St, Philadelphia, PA 19104-1510
      View Details
    • Value Estimation
      $1,100,000
      4,111 SF

      3613 Powelton Ave

      APARTMENT HOUSE (5+ UNITS) • 4,111 SF
      3613 Powelton Ave, Philadelphia, PA 19104-2331
      View Details
    • Value Estimation
      $4,870,000
      26,588 SF

      4417 Pne St

      APARTMENT HOUSE (5+ UNITS) • 26,588 SF
      4417 Pne St, Philadelphia, PA 19104-3947
      View Details
    • Value Estimation
      $1,115,000
      4,800 SF

      4039 Baltimore Ave

      APARTMENT HOUSE (5+ UNITS) • 4,800 SF
      4039 Baltimore Ave, Philadelphia, PA 19104-4523
      View Details

    Similar Nearby for Sale

    • $999,000
      2,960 SF

      Philadelphia Multifamily Investment Opportunity

      Five-unit property near Drexel and UPenn, generating $70,000 annually.
      3627 Powelton Ave, Philadelphia, PA 19104
      View Details
    • $1,750,000
      10,084 SF

      West Philly Development Opportunity

      10,084 SF, 28 Units, QOZ
      892 Belmont Ave, Philadelphia, PA 19104
      View Details
    • $1,690,000
      5,138 SF

      Renovated Multifamily Property Near UPenn

      Renovated 6-unit multifamily near UPenn with bonus unit.
      230 S 45Th St, Philadelphia, PA 19104
      View Details
    • $799,000
      0.15 Acres

      Philadelphia Land with Development Potential

      Land with 31 residential units and 1 commercial space.
      4022-26 W Girard Ave, Philadelphia, PA 19104
      View Details
    • Contact for pricing
      13,000 SF

      Philadelphia Mixed-Use Development Opportunity

      Mixed-use development opportunity in the heart of Philadelphia.
      4075 Haverford Ave, Philadelphia, PA 19104
      View Details
    • $1,999,000
      0.05 Acres

      Luxury Multifamily Investment Near Universities

      Five-unit multifamily property near UPenn and Drexel with luxury finishes.
      4059 Baring St, Philadelphia, PA 19104
      View Details

    Similar Nearby for Lease

    • $2,500 /Mo
      2,566 SF

      Spacious Philadelphia Apartment with Rooftop

      Five-bedroom apartment with rooftop deck in Philadelphia.
      3829 Hamilton St, Philadelphia, PA 19104
      View Details
    • $1,800 /Mo

      Renovated Townhouse Near University City

      Charming 2BR/1.5BA townhouse near Drexel, Penn, and University City.
      4219 Wallace St, Philadelphia, PA 19104
      View Details
    • $1,500 /Mo
      7,425 SF

      University City First Floor Unit

      One-bedroom, one-bath unit in University City with shared amenities.
      521 S 41St St, Philadelphia, PA 19104
      View Details
    • $3,100 /Mo
      1,524 SF

      Renovated Home in West Philadelphia

      Spacious, renovated home in West Philadelphia, Section 8 vouchers accepted.
      3602 Melon St, Philadelphia, PA 19104
      View Details
    • Contact for pricing
      3,520 SF

      Locust Street Retail Opportunity

      Philadelphia, PA: 3,520 sq ft retail space.
      4040 Locust St, Philadelphia, PA 19104
      View Details
    • Contact for pricing
      22,950 SF

      Prime Chestnut Street Retail Space

      22,950 SF Retail, Philadelphia, PA
      3701 Chestnut St, Philadelphia, PA 19104
      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.
    521 42nd St
    Philadelphia, PA 19104-4444
    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.