This page helps users handle a Parcel Search in New Castle County, Delaware, by explaining the main county lookup option, related mapping tools, and where to contact county offices for parcel or assessment questions.

The New Castle County Parcel Search is the main self-service tool for looking up parcel records. The Office of Assessment and NCCDE GIS Services also support related tax parcel, map, boundary, and property information needs.

Use the search New Castle County parcel records tool to look up property information by parcel, address, deed, subdivision, or lot details.

Have one or more of these search details ready:

  • Parcel number
  • Street number and street name
  • City
  • Deed book and page
  • Subdivision or lot number

For cleaner results, enter only the parts of the address or parcel number the search form requests.

  • Open the county parcel search tool.
  • Choose the search field that best matches the information you have.
  • Enter the parcel number without dashes, periods, spaces, or other punctuation.
  • For an address search, use the street number and street name without directions, apartment numbers, or suffixes such as Road, Lane, or Ave.
  • Review the results and adjust the sort or results-per-page setting if needed.

Address tip: Numbered street names should be spelled out, such as TWENTY FIFTH instead of 25th.

Assessment records and tax parcel information

The review New Castle County Assessment information page explains the role of the Assessment Division. The division oversees property assessment, reviews assessment exemption applications, and maintains tax parcel and map information.

Assessment records are tied to property tax billing because the property assessment is used for New Castle County taxes and school district taxes. Property subject to assessment in New Castle County is assessed at its fair market value as of July 1, 2024.

Property owners with questions about reassessments, assessment errors, or property tax classification may need to work through the Office of Assessment or the Board of Assessment Review process.

GIS parcel maps and boundary review

NCCDE GIS Services provides mapping tools and GIS data that can help users review parcel locations, tax maps, zoning, subdivisions, and parcel boundaries. The open New Castle County GIS Services site includes public map applications and downloadable GIS datasets.

Relevant GIS tools include Explore New Castle County, the NCC Zoning Map Viewer, and the NCCDE Tax Map Viewer. The tax map viewer is used to identify a tract of land by perimeter, boundaries, number, or visual representation.

Boundary note: GIS parcel lines are for reference. For accurate boundary descriptions, the county directs users to hire a surveyor.

Parcel search contacts

For parcel, assessment, and GIS map questions, use the county office that matches the issue.

  • Office of Assessment, 87 Reads Way, New Castle, DE 19720
    Phone: (302) 395-5520
    Hours: Monday - Friday, 8 a.m. - 4 p.m.
  • NCCDE GIS Services, 87 Reads Way, New Castle, DE 19720
    Phone: (302) 395-5557
    Email: [email protected]
  • New Castle County Government Center, 87 Reads Way, New Castle, DE 19720
    Phone: (302) 395-5340

Common questions

Where can I search for a New Castle County parcel online?

Use the New Castle County Parcel Search tool. You can search by parcel number, address details, deed book and page, subdivision, or lot number.

How should I enter a parcel number?

Enter only the numbers. Do not include dashes, periods, spaces, or other punctuation in the parcel number field.

How should I enter a street address?

Use the street number and street name only. Leave out directions, apartment numbers, and suffixes such as Road, Lane, or Ave.

Who handles tax parcel and map information?

The Office of Assessment maintains tax parcel and map information and can assist with assessment-related property questions.

Can GIS parcel lines be used as exact property boundaries?

No. NCCDE GIS Services explains that mapped parcel lines are for reference and may not match actual property boundaries. Accurate boundary descriptions require a surveyor.