Sussex County

Project Documents


Sussex County
Property Reassessment

All things change with time. Sussex County’s assessment system is no exception. Sussex County has contracted with Tyler Technologies to conduct a reassessment project to update property assessments from a base year of 1974, providing an efficient technical process with current, accurate property values.

The purpose of conducting the reassessment is to comply with a Delaware Chancery Court ruling in 2020 that found property taxing systems in each of the state's three counties to be unconstitutional and not in keeping with Delaware law.

So, what's next? Property owners should be on the lookout for our data collectors beginning October 1, 2021. They will be making their way through Sussex County, visiting the more than 180,000 parcels on record, measuring improvements on each property and collecting data. Data collectors may also ask residents/occupants several questions about a property. The purpose is to get as much information about a given property so our teams can accurately compute every parcel's value. The process should last through Late 2023.

Once the data have been collected, each property owner will receive a data mailer with the information that was collected for verification of accuracy. Property owners should receive mailers in Early 2022 through Mid 2023.

Upon receiving the data mailer, property owners are asked to notify the County if any errors are present, or if assessors missed some other pertinent information. This is a critical step in any transparent reassessment process. Accurate information ensures the most accurate value for your property.

Once all information is collected and data mailers have been returned and reviewed, Tyler Technologies will then analyze the data. Property owners will receive their tentative assessment notices in the fall of 2023. Property owners should follow the instructions on the informal notice to review your tentative property values and schedule an informal review if necessary.

For more information, please download our frequently asked questions (FAQ) document and check back here for updates as the project progresses. Key dates, as well as pictures of the data collectors, will be uploaded to this website. If you have questions about whether a data collector is in your area, please feel free to call the Sussex County Assessment Office at (302) 855-7824.

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Public Meetings



  • Thursday, Sept. 23, 2021, 2 to 4 p.m., at Milton Fire Department, 116 Front St., Milton
  • Thursday, Sept. 23, 2021, 6 to 8 p.m., at Delaware Technical Community College-Owen Campus, 21179 College Drive, Georgetown
  • Monday, Sept. 27, 2021, 2 to 4 p.m., VIRTUAL, View Recording
  • Monday, Sept. 27, 2021, 6 to 8 p.m., at Delaware National Guard-Bethany Beach Training Site, 163 Scannell Boulevard, Bethany Beach
  • Wednesday, Sept. 29, 2021, 6 to 8 p.m., at Millsboro Town Center, 322 Wilson Highway, Millsboro
  • Thursday, Sept. 30, 2021, 6 to 8 p.m., at Seaford Volunteer Fire Department, 302 King St., Seaford

Contact Information

Sussex County
Assessment Division
PO Box 589
Georgetown, DE 19947
(302) 855-7824

Tyler Reassessment Office Hours: Monday - Friday,
8:30 a.m. - 4 p.m.
Tyler Reassessment Office Phone: (302) 854-5274

Have additional questions?

We compiled a list of frequently asked questions to help you better understand how a reassessment works and how it affects you. Click the link below to review the questions and responses.

View FAQs