How to Appeal Your Property Tax in Delaware
Delaware homeowners can appeal their property tax assessment if they believe it's too high. This guide covers the 2026 appeal deadline, required evidence, and step-by-step process.
How Delaware Assesses Property
Delaware assesses residential property at 100% of market value.
Delaware nominally assesses at 100% of value, though base-year values are often decades old.
The Appeal Process
Appeals are heard by the Board of Assessment Review. An informal review is available before filing a formal appeal.
Board of Assessment Review
Superior Court
Delaware Appeal Deadline
What Overassessment Costs Delaware Homeowners
The median home in Delaware is worth $299,000. If your assessment is just 10% too high, you may be overpaying:
~$158/year
Effective tax rate: 0.53% · Median value: $299,000
Check Your Delaware Assessment
Enter your address to see your estimated overassessment and Delaware filing deadline.
Delaware Counties
Delaware Guides & Resources
📋 How to Appeal Property Taxes in Delaware: Complete 2026 Guide
Complete guide with deadlines, forms, and step-by-step instructions
📋 How Much Can Property Taxes Increase in Delaware? 2026 Complete Guide
Delaware caps, limits, and protections
📅 Delaware Property Tax Appeal Deadline 2026: County Boards Set the Rules
Delaware filing deadlines and process
🏦 How to Appeal Property Taxes in Escrow in Delaware (2026)
Yes, you can appeal even if your lender pays your taxes
🔑 Inheriting Property in Delaware: What Happens to Property Taxes (2026)
Delaware reassessment rules, exemptions, and strategies for inherited property
👤 Delaware Senior Property Tax Benefits: Every Exemption, Freeze & Deferral (2026)
Age 65+ exemptions, freezes, and deferrals in Delaware
Delaware Property Tax Relief 2026: Alternative Ways to Save Without Traditional Homestead
While Delaware doesn't offer traditional homestead exemption
Property Tax Appeal Resources
Best Appeal Services Compared
7 companies compared — pricing, coverage, and pros/cons for 2026.
2026 Appeal Deadlines
Every state's deadline, filing method, and what happens if you miss it.
Assessment Ratios by State
Every state's assessment percentage — from 4% to 100% — with worked examples.
9 Ways to Lower Your Property Taxes
From homestead exemptions to formal appeals — every method that works.
Savings Calculator
Check if you're overassessed — enter your assessed value to see potential savings.
Flat Fee vs Contingency: Which Saves More?
$49 flat vs 25-50% of savings — see the break-even math at every savings level.
Frequently Asked Questions
How do I appeal my property tax in Delaware?
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Ready to Appeal Your Delaware Property Tax?
Enter your address for a free overassessment analysis. If the numbers support a appeal, your complete evidence packet is $49.