11 percent of mortgage holders responding to a survey have said they'll likely need to sell in the next 12 months.
That's according to an opt-in Horizon Research survey on the impact of higher interest rates.
About 70 percent are worried repayments could be unaffordable.
Principal researcher Graeme Colman says right now, just over a million mortgages are fixed.
He says they're the ones for whom interest rates are likely to jump from very low to higher levels when they come up for renewal.
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