Apr 22, 2021 · Declaration for Woonsocket Homestead Exemption To file properly, all owners who qualify for the exemption MUST file in person or mail to the City Assessor’s Office, 169 Main Street, P.O. Box B, Woonsocket, RI 02895, this notarized, 2-page form and appropriate documentation listed on the Qualifications sheet. To the Woonsocket City Assessor: