The new Valuation List and Government Rent Roll are declared by the Commissioner of Rating and Valuation in the month of March and made available for public inspection thereafter up to 31 May of the year in which the List and the Rent Rill come into force. Any person who is aggrieved by an entry in the Valuation List or Government Rent Roll may object to the new rateable value by submitting a “Proposal” in the specified Form R20A (Proposal for Alternation of Valuation List or Government Rent Roll) to alter the entry in the Valuation List or Government Rent Roll on or before 31 May of the year.