Applicants must file a Form PTAX-341, Application for Returning Veterans' Homestead Exemption, with the Chief County Assessment Office. President Abraham Lincoln signed the Homestead Act on May 20, 1862.This can provide asset protection from creditors for at least some of house's value. The law is eligible for Missouri senior residents who own property and pay property taxes on their primary residence in the state. Homestead exemptions can protect a home up to a certain value of the homeowner's equity in it. Applying for a homestead exemption differs depending on the state. In some states, the homestead exemptions are automatic. To apply for this exemption, contact the Boone County Assessment Office. Senior Citizens Assessment Freeze Homestead Exemption (SCAFHE).