On the premise of meeting the qualification of buying a house in Beijing, Beijing residents who have no housing and non-local residents who have paid social security or individual taxes continuously in Tongzhou District in recent three years can only buy 1 set of commercial housing in Tongzhou. Beijing registered residents have 1 apartment. If they want to buy another apartment in Tongzhou, they need to settle in Tongzhou for more than 3 years (inclusive), or pay social security or individual tax continuously in Tongzhou District for 3 years.