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Digital Buildings Project

The Digital Buildings project is an open-source, Apache-licensed effort to create a uniform schema and toolset for representing structured information about buildings and building-installed equipment. A version of the Digital Buildings ontology and toolset is currently being used by Google to manage buildings in its portfolio.

The Digital Buildings project originated from the need to manage a very large and heterogeneous building portfolio in a scalable way. The project aims to enable management applications and analyses that are trivially portable between buildings. This goal is achieved through a combination of semantically-expressive abstract modeling, an easy-to-use configuration language, and robust validation tooling. Digital Buildings work has been inspired by Project Haystack and BrickSchema and maintains cross-compatibility and/or convergence as a long-term objective.

In creating the Digital Buildings project, we have considered the following:

Project Structure

This project is structured as follows:

Learning Modules

The learning modules provide an overview of the following key concepts:

Module 1: Digital Buildings Ontology (DBO)

In this module, you’ll fully explore the core modeling and organizational concepts of the DBO. These are essential concepts for data modeling and creating building configuration files.

Module 2: Data Modeling with the DBO

In this module, you’ll deepen your understanding of the DBO and practice applying it. Through several hands-on activities, you’ll walk through the recommended workflow for creating a building configuration file


Please post issues in the Issues section.


Our team has created an open mailing list to discuss Google’s Digital Building effort. The discussion could include general questions, standards, APIs, and more. Join the discussion here:

Members are expected to adhere to this code of conduct:

How to Contribute

Please see the contribution section.


Copyright 2023 Google LLC

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

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