Is it legal for Nanxiong Ding Yu real estate to build an underground garage without civil air defense facilities?

Illegal. Garage is a part of civil air defense, and it is indicated in the reply of civil air defense that it is used as garage in peacetime and wartime. At this time, the garage property belongs to civil air defense and cannot be bought or sold. The garage belongs to the developer, and the developer has the property right certificate of the garage, and of course it can be bought and sold. Underground parking lot is a building built by the development project to solve the functional requirements of parking motor vehicles and non-motor vehicles, as well as the use place of building equipment. Because civil air defense projects need to be set below the ground, they are usually used together with underground parking lots, that is, as civil air defense basements in wartime and as garages and storage rooms in peacetime. Civil air defense engineering civil buildings do not need special qualifications, but only basic civil building qualifications (generally differentiated by building scale). However, the production and standards of civil air defense equipment need special qualifications: having the production license of civil air defense engineering protective equipment, the provincial registration certificate of civil air defense engineering protective equipment products, and the qualification certificate of designated production and installation enterprises of civil air defense protective equipment. Each place is slightly different, so you can consult the local civil air defense office. According to the new regulations, new residential areas must be guarded, otherwise it is illegal.