Find out how the New Castle CountyReassessment + Split School RatesImpacted Your Property
Not affiliated with the State of Delaware or New Castle County (NCC).
NCC Parcel Search & Property Tax Impact Map
Interactive NCC parcel search map showing New Castle County reassessment impacts across all 215,000+ properties. Red areas show tax increases, green areas show decreases from the reassessment.
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Video Guides
Resources & Updates
Key resources for navigating the New Castle County property tax reassessment
Tax Relief Programs
Updated 2026 applications now available for eight relief programs including senior credits, disabled veteran benefits, and farmland exemptions. Key deadlines: February 1st, April 30th, and June 1st.
View Programs & Deadlines2025 Tax Bills & Refund Process
Official 2025 tax bills released November 17, 2025. If you overpaid by more than $50, you can request a refund online.
Learn More & Request RefundLegislative Investigation
Bipartisan House and Senate committees conducting public hearings to examine the reassessment process and develop recommendations.
View Committee Details2025 School District Tax Rates
Compare residential and commercial split rates across all five districts: Brandywine, Colonial, Red Clay, Christina, and Appoquinimink.
View District RatesProperty Assessment Appeals
Step-by-step guide to filing an appeal with the Board of Assessment Review (BOAR), including required evidence and hearing process.
Start Your AppealTyler Technologies Report
Analysis of the official mass appraisal report covering 214,788 properties worth $120.06 billion, including methodology and limitations.
Read AnalysisBusiness Tax Impact Analysis
Discover how the reassessment and split school rates affected businesses across New Castle County. Search by company name to see the complete tax impact for any business owner.
Commercial Winners
Major businesses like Amazon, DuPont, and Chase Bank saved millions through split school tax rates and reassessment adjustments.
Top reduction: $2.1M+ in annual savings
Most Impacted
Some commercial properties faced significant increases, with businesses like Christiana Mall seeing major tax bill changes.
Largest increase: $1.6M+ in additional taxes
Search any business name to see all their properties, total tax changes, and individual property impacts. Perfect for understanding how the reassessment affected entire business portfolios.