"Conduit Road 39", a luxurious residential building developed by Henderson Land Development, located at Hong Kong's Mid-Levels district facing the Victoria Harbour, is seen from the Peak October 14, 2009. A 6,158 -square-feet deluxe duplex in this building has sold for HK$71,280 (US$9,100) per square foot, setting a world record per square foot for an apartment and surpassing London prices, the developer said on Wednesday. Property prices in Hong Kong have surged 26 percent this year, despite the economic downturn, amid low new supply and strong demand for luxury property from wealthy Chinese.