Sussex County Accepting Applications for Property Assessment Appeals

The Sussex County government is currently accepting applications from property owners who wish to contest the assessed value of their property. Under Delaware law, counties each year must allow property owners the opportunity to formally appeal their assessments. Applications must be submitted by March 15th. This year, the appeal hearings may run through May 31st, with appeals heard by the County’s appointed Board of Assessment Review, as needed. The board hears applications on a case-by-case basis, and renders a decision for each request. Once all cases have been settled, property assessments are certified by the Board and used to calculate the 2026 property tax bills. For more information on reassessment or to file an appeal, visit sussexcountyde.gov/reassessment and click on the ‘Board of Assessment Review’ link on the left side of the page.

Additional Information from Sussex County Government:

This year will be the second since the County completed a court-ordered reassessment of all properties, following a 2018 education funding lawsuit that resulted in nearly 200,000 properties in Sussex being revalued. Following completion on the yearslong reassessment project, only about 1 percent of properties were challenged in the first round of appeals held in spring 2025.