Treasury is to provide more details on Wednesday about the assets owned by the Crown.
The department will issue an Investment Statement providing more detail about the $244 billion dollars worth of assets in public hands and $174 billion of liabilities - mainly Government debt.
Deputy chief executive Vicky Robertson says the growing asset base is complex and the stocktake of its houses, schools and roads allows it to know what it has, and where the need is.
Treasury will recommend the Government adopt key performance indicators to allow Government agencies to manage the assets better.
The balance sheet is also changing from physical to financial assets, mainly due to the growth of investment funds to cover future retirement payments.