The native file extension of a Revit project - .rvt - which carries the complete model: geometry, parameters, views, sheets, and every loaded family, all in one proprietary binary file. Unlike exchange formats like IFC or DWG, an RVT file is not meant for cross-software exchange - it is Revit talking to Revit, preserving 100% of the model's native intelligence, which is exactly why it is the file format used for the central model in worksharing.

RVT files can grow large and, without regular maintenance (purging unused elements, auditing), gradually accumulate bloat that slows the whole team down - which is why file-health habits matter as much as modeling skill on a long-running project.