Homestead exemption applications must be filed annually between February 2 and June 30. Application forms are typically available beginning February 2.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. I also declare that I am entitled to the Nebraska homestead exemption and have not applied for a homestead exemption elsewhere in the state. How do I get help filling out the Form 458 Schedule 1 income statement? Our office will help applicants fill out the forms. You must file between February 1 and June 30 EVERY YEAR in the Assessor's office. All categories of homeowners applying for a homestead exemption in Nebraska must file Form 458 on an annual basis.