buildingSMART Data Dictionary

What is bSDD?

The buildingSMART Data Dictionary (bSDD) is an online service that hosts classifications and their properties, allowed values, units and translations. The bSDD allows linking between all the content inside the database. It provides a standardized workflow to guarantee data quality and information consistency.

BIM modelers use the bSDD to have easy and efficient access to all kinds of standards to enrich their model. BIM Managers use the bSDD to check BIM data for validity. Advanced users use the contents from the bSDD to check compliance, automatically find manufactures products, extend IFC, create Information Delivery Specifications (IDS) and much more.

Besides national classification systems (Uniclass, Minnd, etc) and application specific standards (ETIM, UniversalTypes, IfcAirport, etc) project specific, National and company specific standards can be stored in bSDD as well. The internal structure can facilitate ISO 12006-3, ISO 23386 and Linked Data publications.

Download the flyer, or watch the video to learn more about how bSDD can improve your data quality and productivity.

Download the flyer

Access the bSDD

The newest version is available. Browse the content here, find technical information here, or contact us for information on how to host your data.

Data in the bSDD are being stored compliant with ISO 12006-3 and ISO 23386. The data are published as human readable, JSON, RDF and XML.

Publishing data in the bSDD is free for publicly available data. Data owners keep ownership and decide themselves under which license their data are published.

All data has a unique URI to identify. Find technical information here.

Frequently asked questions about the bSDD:

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Are you an end-user?

Using the bSDD is done though your own software. If you want to access the bSDD, ask your software vendor to activate their bSDD plugin or functionality.

Your software provider can create a  plugin or connection to the bSDD Application Programming Interface (API).  If you have questions about using the bSDD, contact the buildingSMART Data Dictionary Support Team.

Are you a content creator?

Whether you want to publish Exchange Information Requirements, your classification system or Product Data Templates, bSDD lets you connect to the world in a unique way.

Content owners can publish data in the bSDD to test new functionalities. When you need help structuring and delivering your data, buildingSMART International certifies resellers that will ensure your content gets properly added to the dictionary.  bSDD Resellers are neutral organizations that know how to help establish your content.  To get your data into the bSDD, get a list of resellers, or understand how the process works, contact the bSDD Product Manager or go to

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Are you a software developer?


buildingSMART International can help you explore use cases, understand the API and resources, support development and testing, and how to publish, obtain certification and support end users.

Information about the new API can be found on Swaggerhub. Code examples are on Github. For more information, contact the bSDD Product Manager.