Exemption applications must be filed with your local assessor's office. See our Municipal Profiles for your local assessor's mailing address.Though all property is assessed, not all of it is taxable. See a list of common property tax exemptions in New York State. Fill in the "Yes" oval if you currently own the property that was your main home on October 1, 2018. The Homestead Exemption provides qualified homeowners with a measure of property tax relief. Typically, this value will increase annually. Seeking more information on Homestead Exemption? Homeowners should contact their county assessment office (position 48) for a copy of their county's homestead and farmstead application form. HOMESTEAD EXEMPTION FILING DATES ARE JANUARY 1st THROUGH April 1st.