Whether the installation of residence (balcony, etc.) requires qualification requirements. ) railing? thank you

No qualifications are required. In principle, it does not damage the overall beauty and design of the community. For example, if other homes are dark, you can't pretend to be white. In fact, many residential properties use this excuse to monopolize this business. If he finds the merchant he designated, there will be no trouble.

The above is a personal decoration problem. I don't know if the house developer installs this thing as a whole. I haven't touched this piece yet.