National Australia Bank is the first of the big four banks to raise owner-occupier home-loan rates, lifting the rate by 7 basis points to 5.32 per cent.
NAB says property prices have continued to prove more resilient than expected so far this year.
Australian customers could turn away from the big-four banks if they believe they are acting unethically, suggests Oxfam survey.
NAB is forecasting apartments prices to ease 1.2% in 2016, and has lowered its house-price growth forecast to 1%.
All big four banks have hiked their mortgage rates.
NAB's flexible workspace headquarters named best office in Australia.
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