Intelligent construction specification, in the cloud

Work smarter and safer, collaborate better and connect your workflow

Intelligent construction specification, in the cloud

Construction success starts with the specification

Introducing NBS Chorus

Fully cloud-based

Fully cloud-based

Chorus is a fully online specification platform for construction. Access anywhere, on any capable device (including Mac), with lightning-fast performance and ultimate scalability for all sizes of organisation. No complicated installs for IT to manage.

Comprehensive, authoritative content

Comprehensive, authoritative content

Reduce your risk and rely on our multi-disciplinary specialist team to keep on top of thousands of changes to construction standards. Chorus offers the most comprehensive, high-quality content available, with multiple content sets and links to standards; and natively supports the Uniclass 2015 classification required for BIM projects.



Work smarter than with any other specification tools or word processor. Save time, connect your workflow and specify more effectively with a powerful feature set. Develop specifications quickly and intuitively, and manage knowledge across your organisation. Chorus guidance (UK content) links to the Construction Information Service for documents and standards, and the NBS National BIM Library for BIM objects.

Download sample specifications
Integrate model and specification

Integrate model and specification

Chorus enables you to develop your model and specification in parallel. Develop your specification directly within the Autodesk Revit® environment. Keep your information co-ordinated and create a seamless link between your design and specification, saving you time and reducing the risk of information becoming out of sync.

Multiple users, working at once

Multiple users, working at once

Empower your team members to work together on specs in real-time, across organisations and locations. Powerful browser-based collaboration allows multiple users and teams to develop specifications together, making instant updates.

Manufacturer product data
Manufacturers find out more here

Manufacturer product data

Find the right products for your projects, without searching for hours. Instantly select from thousands of construction products from leading manufacturers, pre-written in specification and BIM object format, all to NBS standards.

For the best experience, we recommend web browsers with modern JavaScript engines such as Chrome or Firefox.

Compatible browsers:

  • Chrome
  • Firefox
  • Internet Explorer 11
  • Microsoft Edge
  • Safari

Please note that we find that NBS Chorus performance is optimised through the use of Chrome and Safari.

Always ensure that you have the latest, vendor-supported version of these browsers installed.

Other requirements:

  • An internet connection
  • JavaScript enabled
  • Microsoft Word

Irrespective of your browser choice, you must have JavaScript and cookies enabled in your browser for the website to function correctly. Please read your browser’s help instructions for details on how to enable these settings if they are switched off.

NBS Chorus publishes specifications in Microsoft Word. A licenced version of Microsoft Word (Windows or macOS) is required to open these documents.

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Pricing and purchase

A subscription to NBS Chorus also gives you access to NBS Create and NBS Building so you can transition in your own time.

Manufacturer? NBS puts your products in the places that matter

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