NBS Chorus
Intelligent construction specification, in the cloud. Work together on specs in real-time, across organisations and locations
Plans and features
A range of subscription options to make NBS Chorus work for you
Scope and Contents
NBS Chorus covers multi-discipline content, see all the content libraries available.
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NBS Source
The construction product information you need, when you need it
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Not sure what you're looking for? Browse for manufacturer products by category.
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Not sure what you're looking for? Browse by manufacturer name
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Building product manufacturer looking to get your products listed and power up your marketing? List your products here.
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Uniclass
A dynamic and unified classification system for the construction industry covering all sectors
Articles and updates
Catch up on the latest updates to Uniclass as well as the latest articles and case studies
Specifying with Uniclass
Get started with using Uniclass in digital specification
Feedback and Support
Join our community forum where you can search existing queries as well as reach out to our support team
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Other services
See our full range of tools and services for specification and collaboration
Construction Information Service (CIS)
A comprehensive online collection of construction related standards, regulations, technical advice and articles
NBS Schumann
The new specification writing and consultancy service from NBS
BIM New
Use NBS to develop information-rich 3D models that are fully coordinated with linked specification information
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Knowledge
The latest articles and guides from NBS subject specialists and construction industry contributors
Case studies
Find out how our customers use our software and services
Updates
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Reports
The latest findings from NBS tracking key insights into the Construction Industry
Digital Construction Report 2025
From AI to BIM: the data behind construction’s digital shift. Download now to discover where the industry is moving and how you can stay ahead.
Building Safety Act White Paper
Driven by a comprehensive survey of hundreds of construction professionals, highlights a concerning lack of consensus and clarity among industry leaders.
Resources
Helpful tools, and downloads to help you make the most of NBS
Sample Specifications
Download sample specifications and see what's possible with NBS Chorus
Embodied Carbon Guide New
Learn how to align your carbon assessments with BIM workflows. A practical, standardised approach to calculating the embodied carbon of building materials and products, and how to apply this data to BIM objects.
Best Practice Guide to Specification Writing
A well-written and robust specification is vital to the success of construction projects.
Support
Our Support pages are designed to help you get the most from NBS services
NBS Academy
Hands-on learning, delivered in a format that suits you.
Downloads and updates
Download the latest versions of our software and find out about the latest updates to content
About NBS
We’re connecting construction information, working towards a better and more sustainable industry
Our history
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Sustainability
Helping our customers design and build a more sustainable built environment whilst setting our own sustainability targets to contribute to a greener future for all.
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We’re looking for people with a wide range of skills and experiences to work right across our business.
Partners
NBS work with reseller partners across the globe to deliver NBS products and services locally
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Newsroom
All the latest NBS and industry news and stories
NBS is proud to be the official specification and product data partner for CIBSE.
NBS is a global leading technology platform providing building service engineers with a cloud-based specification system that enables them to work fast and reduce their risk.
NBS Chorus, is our industry leading specification platform, it enables users to create technical specifications up to 75% faster than writing them manually. It has been designed for collaborative working so that the whole project team can work together on the specification.
The platform includes a range of structured content, including an MEP library, technical guidance and links to the latest standards and manufacturer product data. The NBS team of technical authors maintain the content, which is automatically updated in Chorus, meaning the specification is always up to date – helping you save time and reduce the risk of mistakes.
It’s already helping hundreds of building services engineers around the world, including Hydrock.
We are offering all CIBSE members a preferential rate on NBS subscription. To find out more information, please complete the form on this page.
If you would like to learn more about specification writing, watch our CPD session ‘An introduction to specification writing for building services engineers’.
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