Is it legal for residents on the first floor to build sheds privately?

Legal analysis: If the courtyard on the first floor is the property of the owner, it is his own right to use it anyway. As long as it is not built indiscriminately, no unit or individual may interfere.

Legal basis: Article 50 of the Regulations on Property Management. Owners and property service enterprises shall not occupy or dig roads and sites within the property management area without authorization, which will harm the interests of owners. Because of the maintenance of property or public interests, the owners really need to temporarily occupy or dig roads and sites, and shall obtain the consent of the owners' committee and the realty service enterprise; If it is really necessary for a realty service enterprise to temporarily occupy or dig roads and sites, it shall obtain the consent of the owners' committee.