Office of Treaty Settlements acting director Kevin Kelly said the number of Crown properties that had become redundant varied throughout New Zealand, while the majority of historical Treaty grievances in some areas had been resolved, so fewer properties in those regions remained in the land bank.
About 900 properties make up the Office of Treaty Settlements land bank.
Mr Kelly said the Whanganui iwi land settlement was expected to be negotiated in 2014.
Whanganui iwi land claims spokesman Ken Mair said local Maori hoped for a resolution "sooner rather than later".
Though not yet negotiating, the local iwi has started developing a mandate for its comprehensive land settlement, which follows a Waitangi Tribunal district inquiry into more than 70 claims covering an area stretching from the mouth of the Whanganui River to just north of Taumarunui.
The inquiry, Wai 903, also took in land around the Whangaehu River and Waiouru in the east and the catchment area of the Waitotara River in the west.
Mr Kelly said that once a group to represent the iwi had been elected, terms of negotiations could be agreed and formal discussions between the Government and iwi would begin. But a report on the inquiry between August 2007 and March 2010 is still being written.
The report needs to be completed before discussions can take place.
The Waitangi Tribunal said it would detail the report's progress later this month.
Mr Mair said Whanganui iwi members would continue to meet ahead of formal negotiations regarding Wai 903.
Meanwhile, it is anticipated a deed of settlement for the group's Whanganui River claim will be ratified next year.
A preliminary agreement between the Crown and iwi, which made the river a legal entity with rights and interests, was signed at Parliament earlier this year.