Hong Kong’s mortgage rates, at their lowest in at least 19 years, may begin rising in the middle of next year, according to the head of the city’s second-biggest home-loan provider.

Increasing mortgage rates 'will be quite difficult in the next few months because of what’s happened in the US,' Peter Wong, head of HSBC Holdings's Hong Kong and China unit, said in an interview with Bloomberg TV. 'It’ll go up gradually, probably sometime during the middle of next year.'