[Chengdu issued implementation opinions on the implementation of the "Notice on Improving the Commercial Housing Sales System"] On October 26, Chengdu Municipal Bureau of Housing and Urban-Rural Development and other three departments issued implementation opinions on the implementation of the "Notice on Improving the Commercial Housing Sales System". The opinions proposed the implementation of a deposit system for existing house sales. For commercial housing projects that implement existing housing sales, real estate development companies should clearly state their intention to sell existing houses in writing to the municipal and county housing and construction departments before obtaining a construction permit. After obtaining the construction permit, you can sign a house purchase deposit contract with the home buyer and collect a deposit of no more than 5% of the total price of the house. If the real estate development enterprise defaults and fails to deliver the house on time, the house buyer has the right to terminate the deposit contract in accordance with the contract.