BUILDING DATA PLATFORM WITH SCHEMA EXTENSIBILITY FOR PROPERTIES AND TAGS OF A DIGITAL TWIN

A building system includes one or more memory devices comprising instructions thereon that, when executed by one or more processors, cause the one or more processors to perform one or more first operations based on a digital twin of a building. The instructions cause the one or more processors to update a schema of the digital twin by adding a property or tag to an entity class of the schema, add, based on the schema, one or more data elements representing the property or tag to the digital twin, the one or more data elements related to an entity of the entity class, and perform one or more second operations based on the one or more data elements representing the property or tag.