Shanghai will step up efforts to establish a housing system that encourages both home purchases and rentals, as it continues to foster the residential leasing market and increase the supply of affordable housing to meet housing demand, according to officials from the Shanghai Housing Administration Bureau. By 2025, the total supply of residential leasing units in the city, both newly built and those transferred from multiple sources, will reach 400,000, 90 percent of which will be small- to medium-size apartments. Leasing units refer to apartments as well as rented rooms and beds. This year, about 10,000 newly built rental apartments will be added in the city, which currently has about 110,000 such units under construction, according to Feng Ganghua, director of the bureau's housing construction and supervision division.