What is the area of property management room in Zhengzhou residential area?

According to Zhengzhou property management implementation measures

Thirty-first construction units should be in accordance with the standard of not less than four thousandths of the total construction area of the property; For property projects below 20,000 square meters, the construction area of the property management house shall not be less than 80 square meters.

The construction unit shall incorporate the property management space into the construction supporting project plan, and design, construct and deliver the new property synchronously.

Property management houses are used by property service enterprises and owners' committees; No unit or individual may change its use without authorization.