Office Building

A structure used primarily for the conduct of business, such as administration, clerical services, and consultation with clients and associates. Such buildings can be large or small, and may house one or more business concerns.

A structure primarily used for the conduct of business, such as administration, clerical services, and consultation with clients and associates. Such buildings can be large or small and may house one or more business concerns. See Building Owners and Managers Association, Black's Guide, Real Estate Information Systems.
Example: From a large office building in downtown, the XYZ Corporation controlled its nationwide system of factories and outlets.

A building used for professional or clerical purposes, no part of which is used for living purposes, except by the janitor’s family.