Is it illegal to pile up garbage on the second floor of the community?

Illegal. It is illegal to pile up construction waste in the basement of residential buildings. The underground garage of residential buildings can be used for stacking construction waste, but only temporarily. After the construction is completed, the construction waste must be transported away as soon as possible, because the underground garage belongs to the owner's parking space, and it will be very inconvenient to have construction waste. However, sometimes the construction waste generated by construction has nowhere to pile up, so it can be reported to the property and then temporarily placed in the underground parking lot.