An appeal in respect of the 2017 Valuation List entry can be made throughout the life of the list 1st April 2017 - 31st March 2021.
Gellir cyflwyno apêl ynghylch y wybodaeth sydd yn Rhestr Brisio 2017 drwy gydol oes y rhestr sef rhwng 1af Ebrill 2017 a 31ain Mawrth 2021.