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Ontology

The Mapped ontology describes buildings, equipment, points and the relationships between them. It combines Brick, RealEstateCore (REC), BACnet and Mapped's own classes. Browse the tree in the sidebar or start from an entry point below.

ClassesDeprecatedRelationshipsProperties
2,473123124258

By source​

SourceClassesWhat it covers
Mapped2,453Mapped's own classes, including the Brick and RealEstateCore classes Mapped publishes under its own URIs.
REC9Organizations, leases and real-estate spaces from RealEstateCore.
BACnet11Object types of the ASHRAE BACnet protocol, for external references.

Documents​

  • About the ontology: Where the classes come from, how the hierarchy is rooted, how to read a class page and propose a change.
  • Domains: How the ontology is applied to one kind of facility: which classes to use, how they nest, and which points to expect.
  • Protocols: Protocols the ontology models as they are, and how their entities are linked to Things, Places and Points. Others, including Modbus, KNX and C-Bus, map directly to the ontology's classes: see Mapped Connectors.

Entry points​

Top of the hierarchy​

The roots, their children and grandchildren. Counts are descendants.

Deprecated classes​

123 classes are deprecated and kept for compatibility: see Deprecated classes.

Generated on 2026-10-07 · source 04b6267bc5b0

Partial build: 2 classes left out · exclude-only=Meta,Class