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Property tax guide

New Castle County property taxes

New Castle County homeowners can use assessment reviews, comparable sales, and available exemptions to challenge over-assessments. Start with a fast savings check, then get a ready-to-file packet for your local assessor.

Check My Savings
0.63%Estimated effective tax rate
Varies by county and assessment noticeAppeal deadline
$3,036Estimated annual tax bill

Reduce your assessment

Lower property taxes in New Castle County.

Your assessment may be higher than the current market supports, or you may be missing exemptions that reduce taxable value. Lower Property Tax reviews the property, compares available market data, and prepares a packet you can print, sign, and mail.

Estimated median home value$485,500
Estimated average savings$607
Client savingsKeep 100%
Lowering taxes since2009

What affects your bill

Assessment, exemptions, and comparable sales.

Local property tax bills are driven by assessed value, the tax rate, exemption eligibility, and county appeal rules. Comparable sales and property condition issues may help support a lower assessment.

  • Review whether the assessed value is supported by market data.
  • Look for homestead, senior, veteran, disability, or local exemptions.
  • Prepare instructions for where and when to send the appeal packet.

Property tax calculator

Estimate your annual tax bill.

Estimated annual tax bill $3,036 Average annual savings: $607

FAQ

New Castle County property tax FAQ

What is the estimated average property tax bill in New Castle County?

Our preliminary model estimates an average annual bill of about $3,036. Your actual bill depends on your assessment, exemptions, millage/tax rate, and local rules.

Can I keep all of my savings?

Yes. Lower Property Tax uses a flat packet price and you keep 100% of any property tax savings.

What do I get after my review?

You receive a ready-to-file assessment appeal packet with comparable property data, mailing instructions, and next steps. Print, sign, and mail.

City property tax topics

Popular city searches in Delaware.

We work with all counties, cities, townships and municipalities.

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More Delaware counties

Other county property tax guides.

Kent County 0.50% rate • $2,334 est. bill Sussex County 0.40% rate • $1,770 est. bill

View all Delaware counties →

Check your property tax savings.

Enter your address and see your preliminary annual savings estimate.

Check My Savings