4.5 percent. According to the Shenzhen local network, the interest rate of the first home loan in Shenzhen in 2023 is 4.5%, and the down payment needs at least 30%. Shenzhen, referred to as Pengcheng for short, is a prefecture-level city under the jurisdiction of Guangdong Province, a city with separate plans, a mega-city and a special economic zone approved by the State Council.