1. A method for configuring a building management system (BMS), the method including; providing a repository of equipment model standards, wherein each standard is configured to describe a category of equipment in a building system, one or more data points associated with a piece of equipment belonging to that category, the roles of those data points, and relationships with other pieces of equipment; providing an interface for allowing a user to define a plurality of equipment model items using the repository of equipment model standards, such that each equipment model item describes a specific piece of equipment as required by the standard; and constructing an equipment model including the defined equipment model items, wherein the equipment model allows for automated visualisation of the items in terms of location and relationships.