In a shopping mall in one of Hong Kong's prime retail districts, more than 100 people wait patiently to take a lift to the sales floors - not to buy luxury bags or clothes, but high-end apartments with price tags of up to $4.4 million.

Foster Lee, a 30-year-old banker, was among the lucky ones who won the chance to buy a unit after a ballot in which more than 1,600 people signed up for just 80 luxury units on offer.