New Castle County Property Tax Records
New Castle County property tax records are available online through the county parcel search portal. You can look up any parcel by address, owner name, or parcel number to find assessed values, tax district info, and payment status. The county serves as the northernmost county in Delaware and contains Wilmington, Newark, Middletown, and New Castle. If you need to check a tax bill, confirm an assessment, or research ownership history, the county's online tools give you direct access to that data without having to visit an office.
New Castle County Overview
New Castle County Parcel Search
The fastest way to find New Castle County property tax records is through the county parcel search at http://www3.nccde.org/parcel/search. The tool lets you search by street address, parcel number, or owner name. Results show current ownership, assessed value, tax district, and payment status. It is free to use and does not require an account.
Each result ties back to a 15-digit parcel identifier that the county uses across all its systems. Once you have that number, you can cross-check it in the GIS viewer, look up permits, or verify pre-payment status. The system is updated on a regular basis, so what you see reflects current county data. If you are buying or selling property in New Castle County, this is the first place to check before doing anything else.
The county also runs the Office of Finance, which handles tax collection and provides access to financial reports and assessment data. Online tax payments are accepted through the Finance portal. You can confirm whether taxes are current before a real estate transaction closes.
Note: The county partnered with school districts to recover unpaid property taxes. Details on that program are posted on the county's civic alerts page at nccde.org.
Land Use Services and Assessment Office
New Castle County's Land Use Services department handles property assessments, tax exemptions, parcel searches, and permit searches. The office is at 87 Reads Way, New Castle, DE 19720. You can reach them by phone at (302) 395-5400. Walk-in visits are accepted during regular business hours.
This is the office you contact if you have questions about how your property was assessed or if you want to apply for a tax exemption. Staff can also help you find your parcel number if you are having trouble with an online search. The office maintains detailed records on property characteristics, including lot size, building class, and zoning designation.
| Office | New Castle County Land Use Services |
|---|---|
| Address | 87 Reads Way, New Castle, DE 19720 |
| Phone | (302) 395-5400 |
| Services | Assessment, Tax Exemptions, Parcel Search, Permit Search |
| Website | nccde.org |
New Castle County Online Resources
The New Castle County official website provides a central hub for all county services, including property records, civic alerts, and department contacts. The county operates under an elected County Executive and County Council structure.
From the county homepage you can navigate to Finance, Land Use Services, and the Recorder of Deeds. Each department maintains its own records and search tools. The site also lists current civic alerts, which is where the county posts updates on tax collection and reassessment news.
The Office of Finance page is where you go for tax payment options, budget documents, and assessment data. Taxpayers who want to pay in advance can do so through the online portal. The Finance office also oversees the county's financial reporting and distributes collected taxes to school districts and other funded entities.
The Finance page links directly to the parcel search tool, making it easy to move from payment to lookup within the same session.
2025 Reassessment and Property Tax Records
New Castle County completed its first full property reassessment in decades in 2025. The county was ordered by the Court of Chancery to conduct the reassessment because values had not been updated since the 1980s. Tyler Technologies carried out the project, setting new assessed values based on fair market value as of a recent base year. The process was designed to be revenue neutral, meaning total tax revenue collected by the county would not increase as a result of higher assessed values.
Under Delaware Code Title 9, Section 8301, all property must be assessed at its fair market value as of the most recent reassessment base year. Section 8310 requires that completed assessments in New Castle County be made available for public inspection by March 1. These rules set the legal basis for how the county calculates what each property owner owes.
Property owners who believed their new assessed value was wrong had the right to appeal. The Board of Assessment Review (BOAR) heard those cases. The appeal process involved filing a form by deadline, gathering evidence such as comparable sales from January 2022 through June 2024, and either reaching a stipulation with the county or attending a formal hearing. If the BOAR decision was unsatisfactory, an appeal to Superior Court was available within 30 days of the written decision. The reassessment changed tax rates across the county, including adjustments in Wilmington, Newark, and smaller municipalities.
Recorder of Deeds and Property History
The New Castle County Recorder of Deeds is located at 800 N. French Street, 2nd Floor, Wilmington, DE 19801. The phone number is (302) 395-7700. This office maintains all land transaction records for the county, including deeds, deed restrictions, easements, mortgages, mortgage assignments and satisfactions, federal tax liens, and military discharges.
Computer-searchable records at the Recorder's office go back to 1945. That makes it possible to trace the full chain of title for most properties in the county. Researchers, attorneys, and title companies use this office regularly. The Recorder also collects the County Transfer Tax for most municipalities in New Castle County when property changes hands. Understanding the recorded history of a parcel is often important for resolving assessment disputes or confirming what encumbrances exist on a property before purchase.
GIS Mapping and Property Tax Data
New Castle County maintains a full geographic information system at apps-nccde.hub.arcgis.com. The GIS hub offers several tools useful for property tax research. The Tax Map Viewer lets you identify land parcels by their perimeter and parcel boundaries using a map ID. The "Explore New Castle County" app is the most flexible tool, letting you view county data layers, upload your own data, and share results.
The GIS data downloads include parcels with ownership information, parcel boundary shapefiles, building outlines, road centerlines, and zoning data. All datasets are updated daily. The parcel layer contains a direct link back to the county's parcel search tool at nccde.org/parcel/search, so you can move from map to detailed record with one click. This is useful if you are looking at a neighborhood and want to check assessed values or tax status for multiple properties at once.
Other GIS tools include the NCC Mailing Label Generator and the Zoning Map Viewer. The zoning map shows applicable zoning districts for any area within the county. Developers and property owners use it to verify zoning before applying for permits or making improvements that could affect assessed value.
Delaware Law and Property Tax Assessment
Delaware law sets clear rules for how counties assess and collect property taxes. Title 9, Chapter 83 of the Delaware Code governs the valuation and assessment process. Section 8301 requires fair market value assessments tied to the most recent reassessment base year. Section 8302 allows the Board of Assessment to correct errors at any time, with notice required when a correction results in a higher value.
Section 8338 permits quarterly supplemental assessments, which allow the county to add unlisted property or increase assessed values during the year. Section 8341 prohibits retroactive taxation through those supplemental assessments. Property owners who receive a supplemental notice have the right to appeal before any new tax liability takes effect. Agricultural, horticultural, and forest lands receive special consideration under Sections 8328 through 8337, which prevent forced conversion due to higher assessments.
State and county tax information can also be found through the Delaware Division of Revenue and the Delaware Tax Portal. These resources cover state-level tax obligations that layer on top of county assessments.
Cities in New Castle County
New Castle County contains several cities and towns. Each one uses the county's assessment values as the basis for its own local property tax rate.
Nearby Counties
New Castle County borders Kent County to the south. If you are unsure which county covers your property, use the parcel search or check your tax bill for the county name.