Your AI Navigator in Commercial Real Estate
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
    Property profile & analytics

    621 Delaware St Historic New Castle, DE 19720-5073

    • Investment properties
    • 5,214 SF
    • 0.56 lot acres
    OFF-MARKET
    Value Estimation
    $380,000
    Last Sale
    Jul 29, 2025
    Location Intelligence
    Property ID
    US17-0036328
    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

    • New Castle Insurance Ltd / Insurance Agency
    • location realty advisors / Real Estate Agency
    • Community Collaboration of Delaware / Non-Profit Organization / Association / Organization
    • Knights of Columbus Insurance / Insurance Agency
    • HSL Inc Trdg As Holcomb Sltr / Insurance Agency

    Property Details for 621 Delaware St

    Year built
    1917
    Construction
    CONCRETE
    Lot size
    0.56 lot acres
    Property size
    5,214 SF
    Zone code
    21DG
    Property type
    Investment properties
    Property subtype
    Retail residential properties
    APN
    21-015.10-023
    APU
    2101510023

    Value Estimation

    by Realmo proprietary methodology Last update: July 3, 2025

    • AI approach

      CAP return
      Estimation
      Estimation
      $335,000

    • CAP approach

      CAP return
      Estimation
      6%
      $465,000
      6.5%
      $510,000
      7%
      $455,000

    • Comparable approach

      Method
      Estimation
      Relative Method
      $445,000
      Geo Method
      $465,000

    • Alternative Use

      Use
      Estimation
      Distribution
      $550,000
      Retail
      $510,000
      Mixed-Use
      $465,000
      Hospitality
      $475,000
      Educational
      $460,000
      Residential Income
      $435,000
      Energy
      $490,000
      Income-Based Land
      $465,000
      Food Service
      $485,000

    Location Insight

    • Map
    • Local Demand
    City
    Historic New Castle
    County
    New Castle
    State
    Delaware
    Longitude
    -75.5674
    Latitude
    39.6629
    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
    $5,967
    $85,100
    $143,300
    $228,400
    -
    $0.00
    $0.00
    $0.00

    Comparable in this City

    • Value Estimation by Request
      1,665 SF

      122 Delaware St

      STORE/OFFICE (MIXED USE) • 1,665 SF
      122 Delaware St, Historic New Castle, DE 19720-4814
      View Details
    • Value Estimation
      $335,000
      5,400 SF

      306 Delaware St

      STORE/OFFICE (MIXED USE) • 5,400 SF
      306 Delaware St, Historic New Castle, DE 19720-5038
      View Details
    • Value Estimation
      $415,000
      3,158 SF

      265 Dupont Hwy

      STORE/OFFICE (MIXED USE) • 3,158 SF
      265 Dupont Hwy, New Castle, DE 19720-6400
      View Details
    • Value Estimation by Request
      924 SF

      120 Delaware St

      STORES & APARTMENTS • 924 SF
      120 Delaware St, Historic New Castle, DE 19720-4877
      View Details
    • Value Estimation
      $360,000
      884 SF

      103 Hazeldell Ave

      STORES & APARTMENTS • 884 SF
      103 Hazeldell Ave, New Castle, DE 19720-1300
      View Details
    • Value Estimation
      $400,000
      2,636 SF

      202 Delaware St

      STORES & APARTMENTS • 2,636 SF
      202 Delaware St, Historic New Castle, DE 19720-4843
      View Details

    Similar Nearby for Sale

    • $1,500,000
      6,800 SF

      Mixed-Use Property in Downtown Gateway

      Mixed-use property with retail and residential income potential.
      699 Ferry Cut Off St, New Castle, DE 19720
      View Details
    • Contact for pricing

      Flex Warehouse Space Available

      Move-in ready flex-warehouse with heavy electric and high ceilings.
      243 Quigley Blvd, New Castle, DE 19720
      View Details
    • Contact for pricing
      1,140 SF

      Office Space in Airport Business Park

      Office space featuring three offices, conference room, and breakroom.
      94A Quigley Blvd, New Castle, DE 19720
      View Details
    • $325,000

      Specialty Property in New Castle

      Specialty property available for sale in New Castle, Delaware.
      68 Liborio Ln, New Castle, DE 19720
      View Details
    • $289,900

      Specialty Property For Sale

      Specialty property available for purchase.
      13 Oakmont Dr, New Castle, DE 19720
      View Details
    • $700,000

      New Castle Avenue Commercial Opportunity

      Commercial property with redevelopment potential on New Castle Avenue.
      3101 New Castle Ave, New Castle, DE 19720
      View Details

    Similar Nearby for Lease

    • $14 SF/Yr
      20,155 SF

      Riveredge Park Executive Office Space

      Delaware Executive Office Suite Available
      91 A Lukens Dr, New Castle, DE 19720
      View Details
    • Contact for pricing
      9,430 SF

      Dupont Hwy Commercial Building

      High-Visibility Office/Retail Space
      1424 Dupont Hwy, Wilmington Manor, DE 19720
      View Details
    • $16 SF/Yr
      9,190 SF

      Office Space with Ample Parking

      Office space with ground-level access and custom fit-out options.
      908 B Churchmans Rd Ext, New Castle, DE 19720
      View Details
    • $12 SF/Yr
      66,000 SF

      Warehouse Space in Riveredge Park

      26,100 SF warehouse space with dock doors and office.
      109 Lukens Dr, New Castle, DE 19720
      View Details
    • Contact for pricing
      1,600 SF

      Retail Space on Dupont Highway

      Retail space available with high traffic count in New Castle.
      1505-1511 N Dupont Hwy, New Castle, DE 19720
      View Details
    • $12 SF/Yr
      1,397 SF

      Office/Warehouse Space Available

      Flexible office and warehouse space in a prime location.
      296 Churchmans Rd, New Castle, DE 19720
      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 Delaware St
    Historic New Castle, DE 19720-5073
    Message sent successfully
    Error
    Email to Your Friends
    Link copied to clipboard
    Separate multiple addresses with a comma
    Message sent successfully
    Error

    Realmo Value Estimation

    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.

    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.

    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
    Google sign-in failed. Please try again or use another login method.
    Create New Password
    • At least 8 characters
    • Contains both letters and numbers
    • Contains uppercase and lowercase letters
    • At most 32 characters
    • Password required
    • Password reset link has expired. Please request a new one.