The regular filing deadline is February 15th to receive the full exemption. To claim the exemption, the homeowner must make a one-time filing with the county assessor where the property is located.For qualifying individuals and families you can file your taxes inperson, for free! Utilize the contents on this page to help you prepare. A joint owner who pays more than his pro rata share of mortgage interest and taxes ought to be able to claim a deduction for the full amount paid. Filing a homestead declaration typically requires three steps. Complete a homestead declaration form. Complete Form PVR-317, Vermont Property Tax Public, Pious, or Charitable Exemption.