In Autodesk Revit, Project Parameters are used to add custom fields that apply to multiple elements within a specific project file — such as views, sheets, or schedules. These parameters allow project teams to categorize, group, and sort information within the Project Browser or within schedules without editing families or external files.

As defined in the Revit MEP User’s Guide and Revit Structure Parameters Chapter:

“Project parameters are specific to a single project file. Information stored in project parameters cannot be shared with other projects. A project parameter can be used, for example, to categorize views within a project.”

This statement directly confirms that project parameters are the correct tool for sorting or grouping views in the Project Browser.

To organize elements (like views or sheets) by building, the designer can create a custom project parameter named “Building” and assign it to the View category. Once assigned, the parameter values (e.g., “Building A” or “Building B”) can be filled in for each view.

The Smithsonian Facilities Revit Template Guide further supports this:

“View purpose is a Revit project parameter, providing a means for users to organize the many views that may exist in a BIM.”

Thus, using a project parameter allows users to add a “Building” field to each view, enabling customized browser organization (e.g., group views by Building A, Building B, etc.) without requiring shared parameters or family editing.