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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.

A well-written and robust specification is vital to the success of construction projects.

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Platform

NBS Chorus Plans and features Scope and Contents Book a demo Sign in to NBS Chorus NBS Source Browse by category Browse by manufacturer For manufacturers Go to NBS Source Uniclass Articles and updates Specifying with Uniclass Feedback and Support Find a code Other services Construction Information Service (CIS) NBS Schumann BIM New All tools

Resources

Knowledge Case studies Updates Reports Digital Construction Report 2025 Building Safety Act White Paper Resources Sample Specifications Embodied Carbon Guide New Best Practice Guide to Specification Writing

Support

Support NBS Academy

About

About NBS Our history Sustainability Careers Partners Contact us

News

Newsroom

NBS LCA

The powerful carbon platform built for everyday projects.

NBS Lifecycle Carbon Assessment (LCA) makes low‑carbon decision‑making faster, clearer and easier at every stage of your project.

NBS-LCA

Built on trusted construction data

NBS LCA is a platform built to help construction professionals understand, compare and report on upfront carbon more efficiently.

It brings together trusted data and expertise, in a user-friendly platform developed in partnership with Circular Ecology, the lifecycle assessment experts behind the Inventory of Carbon & Energy (ICE) Database, and BDP, the UK’s largest architect-led multidisciplinary practice. 

Products with EPDs

12,500+

Generic materials

500+

Pre-calculated assemblies

1,300+

Transform your approach to carbon 

Save time

Stop spending hours on manual research and DIY spreadsheet calculations

Make carbon decisions earlier

Understand impacts quickly during concept design

Improve your reporting

Get ahead of legislation and client requirements with a consistent, structured approach

Transform-your-approach-to-carbon

Developed for design teams 

Architects and designers

Engineers

Sustainability consultants

Quantity surveyors

How it works 

Structured and trusted lifecycle carbon data

Structured and trusted lifecycle carbon data

Access, filter and compare tens of thousands of lifecycle carbon assessments for generic materials and manufacturer products.

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Assembly-based carbon modelling

Assembly-based carbon modelling

NBS LCA offers thousands of pre‑assembled building elements with whole‑element carbon data, saving you time on manually building up layers or calculating individual components.

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Live project-based carbon assessment

Live project-based carbon assessment

Create and easily update upfront carbon assessments for projects as your design develops.

All features

What makes NBS LCA different? 

Frequently Asked Questions 

What is NBS LCA?
NBS LCA is a cloud-based, user-friendly platform that enables construction professionals to efficiently understand, quantify, compare and report on the upfront carbon impact of materials, products, and systems, as well as assessing and comparing the impact of design decisions and iterations as projects develop.
What data does NBS LCA use?

The platform includes trusted generic embodied carbon data from the Inventory of Carbon & Energy (ICE) Database, as well as a comprehensive library of manufacturer-specific sustainability information and EPDs from NBS Source and ECO Portal

In addition, NBS LCA includes thousands of pre-calculated generic assemblies, covering commonly used building fabric elements, developed by NBS in partnership with BDP, the UK’s largest architect-led multidisciplinary practice.

Does it align with UK standards?
Can I create project assessments?
Yes. With NBS LCA, you can apply carbon data to project-specific design information and then assess as your design develops, helping you make informed decisions and evidence the carbon impacts earlier.  
Is NBS LCA suitable for small and medium practices?
Yes. It is designed for everyday projects and proportionate assessment, as well as larger or more specialist projects.
Does it integrate with specification workflows?
NBS LCA supports live project workflows and is designed to complement design decision-making and specification in NBS Source and NBS Chorus.
How is NBS LCA different to NBS Source?

Our product information tool, NBS Source, provides structured product data from thousands of manufacturers and is free for specifiers to browse and use for specification in NBS Chorus.

Many manufacturers include sustainability data and EPDs for their products on NBS Source and, where this is provided, it will also be available to access in NBS LCA.

However, NBS LCA also includes 

  • additional manufacturer-specific data sourced from ECO Portal
  • trusted generic embodied carbon data from the Inventory of Carbon & Energy (ICE) Database 
  • thousands of pre-calculated generic assemblies developed by NBS in partnership with BDP  
  • carbon assessment and reporting for projects 
How much does a subscription cost

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.

What training is available?

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.