Archives for uniclass2

Please Read: Uniclass 2015

UNICLASS 2015 is a development of CPIc’s UNICLASS 2 and is now cited in the UK National foreword to ISO 12006-2 Building construction – Organisation of information about construction works as the UK response to that International Standard. This has the important effect of elevating its status from that enjoyed by previous versions of UNICLASS.

In 2014 CPIc passed its intellectual copyrights in UNICLASS, including all the development work in UNICLASS 2, to the UK Government for beneficial and government backed and financed development and completion for use with BIM. This has resulted in the UNICLASS 2015 classification within the BIM Toolkit published by NBS. After a period of publication in beta this has now moved to its first formal post-beta issue for use. Development will continue, however, so please do comment/feedback from your own observation and particularly from use on design and construction projects. Whilst CPIc continues and can answer questions about its other documents or legacy versions of UNICLASS, it seems only appropriate to refer enquiries about use of the new UNICLASS 2015 to the NBS.
Questions will very likely be answered by this article and the tool provided for keyword searches

(scroll to the end of the article for the search tool).

If, having read the article you still have questions do contact the author of that page Sarah Delany at NBS (

CPIC and Open Data

With both the Uniclass and Uniclass2 classification systems, CPIC are committed to making the data and information they produce as open and freely available as possible.

Why Open?

Paying to access a classification system doesn’t make sense, and limiting the availability of the system to one specific format (be it in an actual book you have to pay for, or in a proprietary digital format such as Excel) means that unnecessary barriers are put in place for the adoption, use and sharing of the data and classification information.

What are CPIC doing?

To this end, CPIC provide the Uniclass and Uniclass2 systems as freely available data in a variety of formats. Currently, we provide csv, txt, and pdf, as well as hosting Uniclass and Uniclass2 to view freely online or print your own copy via . We are currently finalising the release of a number of XML formats for reuse in various CAD/BIM software too.

How Open is CPIC?

Both Uniclass and Uniclass2 digital formats are available via the Creative Commons Attribution-NoDerivs 3.0 Unported License, meaning that people and organisations are free copy and redistribute the material in any medium or format, for any purpose (even commercially). All CPIC require is that credit is given in the new work, and that If you remix, transform, or build upon the material, you may not distribute the modified Uniclass/Uniclass2 system as being official.

Finally, both Uniclass and Uniclass2 now have an Open Data Institute Pilot-level Certificate to show CPI’s commitment to providing Uniclass as open, reusable data. You can see more about Open Data and what the Institute does in this short video.

For More information see

Last updated: June 1, 2014 at 10:23 am

What is the definitive Uniclass2 resource?


A number of people have asked about the relationship between the CPIC website, the BIM Gateway project and the Uniclass2 labs section of the BIM Task Group website. Most importantly, there have been some queries over the “definitive” source for the new Uniclass2 classification system. This short post will hopefully clear up any confusion.

A Definitive Uniclass Resource

The BIM Gateway was a one year joint project between the RIBA Technical Research Department and Central St.Martins College. This was done with the full cooperation of the CPIC committee, and resulted in an open, online version of the Uniclass and Uniclass2 systems, plus a number of visualisations and statistical experiments.

The resulting Uniclass2 output of the BIM Gateway project was handed over to the BIM Task Group for dissemination through the labs section of their website.

Because the Uniclass2 system was (and is) still being updated, it was felt that a more natural home for the Uniclass2 system was on the CPIC website, alongside the original Uniclass system, where the CPI Committee could administer updates directly rather than through the BIM Task Group.

We have now closed down the BIM Gateway website, and the BIM Task Group website has now been updated to reflect being the definitive resource for the Uniclass and Uniclass2 systems. A legacy page detailing the BIM Gateway project is now available on the CPIC website: The BIM Gateway Project

The Future

Now that we have Uniclass2 under direct control of the CPIC committee, we have a plan for a number of updates for the digital delivery of the Uniclass2 system. These will be released in the coming months. If you have any ideas or suggestions for future updates or delivery formats, then contact, or contribute to our LinkedIn group.

Last updated: June 1, 2014 at 10:24 am




Entities by Form table released

The CPI have released an Entities by Form table (EF) for use and comment. This has been made available in the main Uniclass2 search tool:

and as a PDF download from the main Uniclass section of the website

Entities by Form table revised September 2013