Shanghai's hotel and residential sectors will benefit the most from the city's hosting of the 2010 World Expo, according to Colliers International. Conversely, the office sector would be affected only indirectly, the consultants said in a study of the impact of the event on the property sector. Colliers analysts said that another 3,000 four- and five-star hotel rooms would become available to cater for the estimated 70 million visitors. 'The expo has the potential of being a windfall for the tourism industry, not just in the year of the World Expo, but for years to come, as the host city's international tourist and conference prestige is boosted,' Colliers said. Luxury housing prices in the Expo Village area would rise by about 10 per cent annually, it said. The 400-hectare expo site would consist of value-added infrastructure upgrades and improvements, which were expected to attract more expatriates into the city. Their purchasing power would trigger a surge in the middle and high-end segments, it said. New supply of luxury housing units is expected to grow from 6,464 units at the end of this year to 6,803 units by the end of next year. In the office market, the event should boost the take-up of premium and grade-A office space by 10 per cent. The study notes that a large number of quality office buildings will come on stream after 2005, which is expected to meet the demand of an increasing number of foreign companies setting up operations in Shanghai. 'It is predicted that, by 2010, Shanghai's gross domestic product per capita will double, reaching US$10,000 with the whole Yangstze River Delta turned into a key metropolis backed by information technology,' it said. 'The World Expo is expected to play a significant role in attracting overseas investment, but this will be dwarfed by the World Trade Organisation's impact resulting from the major reforms in the laws governing foreign participation in China's economy.' In the next few years, Shanghai will under take several infrastructure developments, including a second runway at Pudong International Airport to handle an annual 50 million passengers; another railway station to support eight more railways; the expansion of the road system around Shanghai to connect to the surrounding provinces; the addition of 12 more subway lines to carry five million passengers per day and a 'three-year action plan' to clean up pollution.