Unified construction classification

You first need to know what you want to classify (e.g., a building, a construction product, a piece of equipment) as this will help you decide which table or tables best suits your needs, and you can then either download them to study in detail or search or browse codes to find what you need. Finally, if you need more detail on how Uniclass works or to see how other organisations have used it, look at some of our case studies.

Nothing - Uniclass is a free service. All Uniclass tables are available to download and use completely free of charge.

The UK construction industry has used CAWS for many years, however CAWS is no longer maintained as a classification system and more and more projects are now selecting Uniclass.  NBS Chorus uses Uniclass as its native classification scheme, so you can structure your specification by Uniclass codes, as well as finding construction products and systems classified with Uniclass on NBS Source.

Uniclass is currently made up of a suite of 12 tables, all of which can be downloaded individually or as a bundle. You can download the tables and notes on any changes to them here.

Yes, you can download all available older versions of the tables.

NBS Chorus, the industry-leading specification platform, includes Uniclass as one of its native classification systems. To learn more about NBS Chorus and how to write specifications using Uniclass, visit this page.

We’ve got a range of subscription options available to suit the features and number of users you need.

If you need help choosing, get in touch today and one of our expert team will be able to discuss the best subscription for your business.

The platform is designed to be simple to use, but support resources are also available. If you’re interested in understanding more about how the platform works, you can book a free demo with our team.