How to Apply for Homestead Exemptions Homestead applications must be filed with the county assessor after February 1, and on or before June 30 of each year. The 2023 Nebraska Homestead Exemption Application is now available.The form must be filed with the Sarpy County Assessor's Office between Feb. Form 458, Nebraska Homestead Exemption Application -- This form is currently unavailable. The 2024 form will be available February 2, 2024. Homestead exemption applications must be filed annually between February 2 and June 30. Application forms are typically available beginning February 2. To claim the exemption, the homeowner must make a one-time filing with the county assessor where the property is located. The forms must be filed with the Sarpy County Assessor's Office between Feb. 2, 2023 and June 30, 2023.