Office building is another name for professional commercial office building. Strictly speaking, office buildings can't be used by people. This is clearly indicated on the house property certificate. So you can open an art studio.
The original intention of office building refers to the building used for office, or the building composed of offices. In 197 1, Rhodes and Kan put forward: "The function of an office building is to collect information, make decisions, handle paperwork and manage other forms of economic activities."