First-home buyers took out only 10 per cent by value of mortgages given by New Zealand banks in September.
They were outstripped by landlords nearly three to one.
Reserve Bank lending figures showed banks gave mortgages worth $4.2 billion in September of which first-home buyers borrowed $430 million.
Investors borrowed $1.2 billion.
Other owner-occupier lending was $2.5 billion but an official said that could include customers getting new mortgages and switching banks, loan top-ups, mortgages for renovations, holidays and other reasons.