To claim the exemption, the homeowner must make a one-time filing with the county assessor where the property is located. This is a property tax savings program for those aged 55 or older who are selling their home and buying another home.To qualify for the homeowners' exemption, the home must have been the principal residence of the owner as of January 1 of that tax year. If you qualify all you have to do is file an application with your local county office. You must be the property owner, co-owner, or a purchaser named in a contract of sale. If you qualify for an exemption, it allows you to lower your EAV. This would result in a lower property tax bill for you. Changes in the value of benefits over time.