Property tax appeal · Delaware
Appeal your property taxes in Delaware.
In Delaware, the county assessment office sets your value and the county Board of Assessment Review hears your case. Boards act on evidence of market value as of the assessment date, and a licensed, USPAP-compliant appraisal is that evidence.
$5, credited toward your appraisal.
Delaware
1 county page below
- Values your home
- County assessment office
- Hears your case
- County Board of Assessment Review
- Desktop appraisal
- $225
- $5 check credited
- Timing
- Confirmed with your order
Deadline
Appeal deadlines are set county-by-county in Delaware’s three counties — your reassessment notice states yours.
Confirm your filing window and recipient requirements before ordering. Service availability and delivery depend on the property, evidence and appraiser. You remain responsible for filing on time.
How it works
How to appeal your property taxes in Delaware.
- Step 1
Check your savings
Enter your address and pay $5. We check your Delaware assessment against recent nearby sales.
- Step 2
Order the appraisal
A desktop appraisal valued as of your assessment date, with the $5 credited. Complex homes get one exact quote.
- Step 3
Show us your home
Walk through on your phone so the appraiser sees its condition. A desktop appraisal needs no visit.
- Step 4
File your appeal
A state-licensed DE appraiser signs it, with a cover letter and filing steps. You file by your deadline, and the county Board of Assessment Review hears your case.
The evidence
Boards act on value, not frustration.
However Delaware labels the process, the case underneath is the same: show what your home was actually worth on the assessment date. A licensed, USPAP-compliant appraisal, with comparable sales, documented adjustments and a signed opinion of value, is that showing.
What the appraisal gives you
- Valued as of your assessment date, not today
- Comparable sales with adjustments and citations
- Signed by a state-licensed DE appraiser
- A phone walkthrough; a desktop appraisal needs no visit
Confirm before you file
- Your filing deadline, from your assessment notice
- Appraiser availability and delivery timing, before you order
The process
How Delaware handles appeals.
Delaware has just three counties — New Castle, Kent, and Sussex — and each runs its own assessment office and Board of Assessment Review. After decades of frozen, decades-old base-year values, all three counties recently completed court-ordered general reassessments, putting every property on current market value at once. That kind of mass revaluation is precisely when individual errors are made, so checking the new number is worth it. You appeal by filing with your county’s assessment office and presenting evidence to the Board of Assessment Review.
Worth knowing in Delaware
School taxes make up the bulk of a Delaware property tax bill, so an assessment cut flows through several taxing lines at once. The review board’s question is your home’s market value on the county’s valuation date — documented comparable sales, the substance of a licensed appraisal, are what it can act on.
FAQ
Delaware questions
Why did my Delaware assessment suddenly change?
All three counties completed court-ordered general reassessments after decades without one, resetting values to current market levels. New mass-appraisal values are exactly the ones worth verifying against real comparable sales.
How do I appeal a property assessment in Delaware?
File an appeal with your county assessment office by the deadline on your notice, then present market-value evidence to the county Board of Assessment Review. Deadlines and procedures differ among New Castle, Kent, and Sussex.
