Uniclass, delivered by NBS

Unified construction classification

What is Uniclass?

Browse the tables



v1.22, published April 2024



v1.21, published January 2024



v1.31, published April 2024


Spaces/ locations

v1.30, published April 2024

Download the tables Download older versions of the tables

What is Uniclass?

Uniclass is a unified classification structure, made up of many tables, that can be used by different parts of the industry in various ways. Facilities managers and owners might classify their existing assets, whilst designers and constructors can use Uniclass codes to structure specifications and manage project information. Find out more about Uniclass.

Case studies

At NBS, we love hearing about how different organizations around the world are using and helping to contribute to the development of Uniclass. Discover how a variety of users are using Uniclass on a range of projects. Read our case studies.

Please get in touch if you would like to feature your Uniclass journey in our case studies section. Share your experience.

About the API

The Uniclass API allows software developers to develop applications that utilize the Uniclass classifications.

It is a REST API that enables navigation and classification retrieval across all of the Uniclass tables. Find out more about the API.

Uniclass is overseen by the Uniclass Advisory Board

Association of Cost Engineers Chartered Institute of Architectural Technologists Chartered Institute of Building Institute of Asset Management Nima

Frequently asked questions

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