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    Property profile & analytics

    435 William St Port Chester, NY 10573

    • Warehouses
    • 3,288 SF
    • 0.17 lot acres
    OFF-MARKET
    Value Estimations
    $640,000
    Show details
    Cap Rate Potential
    Location Intelligence
    Property ID
    US63-6198107
    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 435 William St

    Year built
    1954
    Lot size
    0.17 lot acres
    Property size
    3,288 SF
    Zone code
    05 - COMMERCIAL
    Property type
    Warehouses
    APN
    554801 141.28-3-1
    APU
    5548011412831

    Value Estimations

    based on Realmo’s proprietary methodology

    • CAP approach

      CAP Return
      Estimation
      6%
      $840,000
      6.5%
      $775,000
      7%
      $720,000

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

    Location Insight

    • Map
    • Local Demand
    City
    Port Chester
    County
    Westchester
    State
    New York
    Longitude
    -73.6765
    Latitude
    41.002
    CBSA code
    35620
    CBSA name
    NEW YORK-NORTHERN NEW JERSEY-LONG ISLAND, NY-NJ-PA 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
    2020
    $0.00
    $328,000
    $114,300
    $442,300
    -
    $328,000
    $114,300
    $442,300

    Comparable in this City

    • Value Estimation
      $1,140,000
      7,545 SF

      48 Beech St

      WAREHOUSE, STORAGE • 7,545 SF
      48 Beech St, Port Chester, NY 10573-5002
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    • Value Estimation by Request
      1,665 SF

      89 Fox Is Rd

      WAREHOUSE, STORAGE • 1,665 SF
      89 Fox Is Rd, Port Chester, NY 10573
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    • Value Estimation
      $11,140,000
      123,454 SF

      351 Main St

      BULK STORAGE, TANKS • 123,454 SF
      351 Main St, Port Chester, NY 10573-3305
      View Details
    • Value Estimation
      $5,985,000
      48,580 SF

      31 Pearl St

      WAREHOUSE, STORAGE • 48,580 SF
      31 Pearl St, Port Chester, NY 10573-4610
      View Details
    • Value Estimation
      $15,680,000
      79,140 SF

      305 Regent St

      WAREHOUSE, STORAGE • 79,140 SF
      305 Regent St, Port Chester, NY 10573-4710
      View Details
    • Value Estimation
      $505,000
      2,656 SF

      425 William St

      WAREHOUSE, STORAGE • 2,656 SF
      425 William St, Port Chester, NY 10573-3500
      View Details

    Similar Nearby for Sale

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      Port Chester Mixed-Use Warehouse

      Prime Port Chester location, high visibility.
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    • $760,000
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      Freestanding Warehouse in Residential Area

      One-story warehouse with office space in residential neighborhood.
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      Port Chester Office Building For Sale

      Corner lot office building with great visibility and investment potential.
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    • New
      $674,999
      0.23 Acres

      Two-Family Property Near NY/CT Border

      Well-maintained two-family property near the New York/Connecticut border.
      273 Madison Ave, Portchester, NY 10573
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    • Contact for pricing
      4,730 SF

      Port Chester Development Land Available

      41,000 SF development land for rent in Port Chester.
      316 Boston Post Rd, Portchester, NY 10573
      View Details
    • $48,000
      Pending

      Land For Sale

      Land available for sale.
      28-1/2 Pilgrim Dr, Portchester, NY 10573
      View Details

    Similar Nearby for Lease

    • Contact for pricing
      1,058 SF

      Class A Office Park

      Six Class A buildings with comprehensive amenities and easy transportation access.
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    • $1,250 /Mo
      687 SF

      Spacious Office Suite in Port Chester

      First-floor office suite near transportation and amenities in Port Chester.
      388 Westchester Ave, Portchester, NY 10573
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    • Contact for pricing
      3,485 SF

      Retail Space Near Major Retailers

      59,797 SF shopping center near Whole Foods and Target.
      262 Boston Post Rd, Portchester, NY 10573
      View Details
    • Contact for pricing
      378,619 SF

      Port Chester Waterfront Retail Space

      Prime Retail, Multiple Spaces Available
      5-50 Westchester Ave, Rye Brook, NY 10573
      View Details
    • Contact for pricing
      6,000 SF

      Rye Brook Office Space Available

      Office space for rent with convenient parking and location.
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      View Details
    • Contact for pricing
      5,052 SF

      Retail Space on Boston Post

      503,740 SF shopping center on Boston Post Road.
      435 Boston Post Rd, Portchester, NY 10573
      View Details
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    435 William St
    Port Chester, NY 10573
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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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