Nebraska Homestead Exemption. Nebraska Homestead Helpline: (888) 475 - 5101.Nebraska Homestead Exemption Application, Form 458. 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. If you have any questions on filing for property tax exemptions, please contact our office at 813-272-6100. Homestead exemption applications must be filed annually between February 2 and June 30. Application forms are typically available beginning February 2. Our office will help applicants fill out the forms. The property appraiser determines if a parcel is entitled to an exemption. Homestead Exemption, Save Our Homes Assessment Limitation, and Portability Transfer.