1985 is it illegal to build a house with a cool house?

It's not an illegal building The old houses in the 1980s are not illegal buildings, even if there is no examination and approval procedure. Because many laws and regulations were not promulgated at that time, this is a problem left over from history, so the gazebo built by the unit in 1985 is not an illegal building. Illegal buildings are unauthorized changes to buildings, such as adding stories, changing load-bearing walls or digging basements. Illegal buildings violate the relevant building laws, which will also endanger the mechanical balance of the original buildings and form dangerous houses. Illegal buildings in China Mainland and Hong Kong are supervised by the Buildings Department of the Hong Kong Government, while those in Chinese mainland are supervised by the Municipal Urban Management Bureau.