Assessor
New Castle County Assessment Division
Appeal Deadline
Varies
Required Form
Board of Assessment Review form
Risk of Increase
No
Median Home Value
$290,000
Effective Tax Rate
1.15%
Estimated Annual Savings
$500
Based on 15% reduction
New Castle County Assessment Division Portal
Access your property records, assessment details, and file appeals directly through the official New Castle County website.
Visit https://www.nccde.org/167/AssessmentTips for New Castle County Appeals
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Wilmington area — most populated DE county
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File with the Board of Assessment Review
Step-by-Step
How to Appeal in New Castle County
Review your property assessment notice from New Castle County Assessment Division. Verify the property details — square footage, bedroom count, lot size, and condition.
Research comparable sales in your area. Look for recent sales of similar properties that sold for less than your assessed value.
File your appeal by the Varies deadline. You can file online at https://www.nccde.org/167/Assessment, by mail, or in person.
Prepare your evidence packet. Include comparable sales data, property condition photos, and any repair estimates that affect value.
Attend your appeal hearing. Present your evidence clearly and focus on comparable sales that support a lower value.
Receive your decision. If the appeal is unsuccessful, check your options for further appeal.
No Risk of Increase
In Delaware, your assessed value cannot increase as a result of filing a appeal. Your value can only stay the same or go down. There is no risk to filing.
FAQ
New Castle County Property Tax Questions
How do I appeal my property tax in New Castle County, Delaware?
File a appeal with New Castle County Assessment Division by the Varies deadline. You can file online at https://www.nccde.org/167/Assessment, by mail, or in person. ProtestMax generates your complete appeal packet for $45 flat.
What is the property tax rate in New Castle County?
The average effective property tax rate in New Castle County is approximately 1.15%. The median home value is $290,000, resulting in an average annual tax bill of approximately $3,335.
What is the appeal deadline for New Castle County?
The appeal deadline for New Castle County is Varies. Make sure to file before this deadline to preserve your right to appeal.
How much can I save by appealing my New Castle County property tax?
A successful appeal in New Castle County typically reduces the assessed value by 10-20%. On the median home value of $290,000, a 15% reduction saves approximately $500 per year.
Can my property tax increase if I appeal?
No. In Delaware, your assessed value cannot increase as a result of filing a appeal. Your value can only stay the same or go down.