A new report investigating the state of Premier House does not state the residence is uninhabitable, but it has raised questions about its suitability as a home for the Prime Minister.

The report catalogues a list of problems, from 30 year old fittings and furnishings, to a lack of insulation and draughty, leaky windows.

NZ Herald political editor Claire Trevett says other former Prime Ministers have claimed Premier House is 'substandard'.

"The trouble with Premier House is the political backlash that a Prime Minister gets if they look at even doing basic maintenance jobs- which means they don't do it."

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