How to define ordinary community and high-grade community?

Ordinary residence refers to the residence built according to the local ordinary residential building standards (excluding affordable housing). The plot ratio of ordinary houses is generally above 1.0, and there are mainly two types of apartments: multi-storey and high-rise. Multi-storey residential buildings refer to buildings with 2 to 6 floors (including 6 floors); High-rise residential buildings refer to buildings with more than 6 floors, and more elevators are installed. Because of the different definitions of multi-storey and high-storey, the division standard can be determined according to the actual situation.

High-grade residence refers to the high-standard residence whose construction cost and sales price obviously exceed the building standards of ordinary residence, usually including villas and high-grade apartments. Villa refers to a garden-style residence built in the suburbs or scenic spots, and generally has its own private garage, garden, lawn, yard and so on. High-grade apartments refer to high-grade houses whose sales price per unit construction area is more than twice that of local ordinary houses. Usually, it is a duplex residence, with a garden on the top floor or a multi-storey residence with an elevator, which has better supporting facilities such as greening, commercial services and property management.