Where is the basis for the property fee of the facade house outside the community to be twice as high as the housing?

According to the property management contract signed between the community and the property. Facade houses are commercial houses. Generally speaking, the property management fee for commercial houses is higher than that for residential houses. The flow of people in commercial buildings is complicated, the sewage discharge is higher than that in residential buildings, and the electricity consumption is also higher than that in residential buildings. Residential buildings are used for living and do not produce economic benefits, while commercial buildings are used for business and produce economic benefits.