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ICMS3 Set to Simplify Carbon Reporting in Construction

ICMS3 Set to Simplify Carbon Reporting in Construction
08 December 2021

The world’s first universal standard for reporting carbon dioxide emissions in the construction industry has been published.

An international coalition of construction experts, including RICS and the Chartered Institute of Building, is focussing on measuring CO2 that’s emitted in the building and lifecycle of structures – also known as embodied and operational carbon.

The International Cost Management Standard – or ICMS3 – sets out a methodology for construction professionals and developers to account for the amount of embodied carbon their projects will create, whether that’s through the delivery of new roads, schools, offices, housing or railways.

An estimated 40 per cent of global carbon emissions are emitted every year through the construction of new buildings and infrastructure, and the industry has accepted it must adapt in order to meet the pressing need to avert climate catastrophe.


“De-carbonisation of construction is now essential to meet the goals of COP26. Critically, to achieve this, we need globally standardized reporting systems – unless we measure it, we cannot manage it."

–Alan Muse

Head of Construction Standards, RICS


Embracing Net-Zero as an Interconnected Industry


The launch of ICMS3 indicates an attempt by the construction sector to embrace net-zero as a global, interconnected industry, and follows the COP26 climate conference in Glasgow where world leaders set bold targets to avert a global disaster.

Prior to launch there were conflicting ways to report carbon, and according to the RICS Global Construction Monitor, 40 per cent of the industry didn’t feel that accurate carbon measurement was understood.

The coalition – through ICMS3 – has introduced a method that will allow the reporting of the emissions created – which in the near future will allow developers to alter their proposals (either by selecting more sustainable materials or adopting construction practices) to drive down the impact to the climate.

As well as reporting on embodied carbon, ICMS3 also allows the lifecycle, cost and carbon impacts of a building or infrastructure to be taken into account long after construction is complete.

Also, with a push to retrofit and reuse old buildings, rather than knocking them down, the standard provides developers with data and information which could allow them to make informed considerations about the value of retrofitting.

RICS plans to embed the new coalition standards into their standards and guidance for all members who operate in the construction sector. RICS will also publish an updated whole life carbon assessment standard in 2022, which will align to ICMS3.

Alan Muse, Head of Construction Standards at the Royal Institution of Chartered Surveyors, said: “De-carbonisation of construction is now essential to meet the goals of COP26. Critically, to achieve this, we need globally standardized reporting systems – unless we measure it, we cannot manage it.

“The use of ICMS 3 will benefit all construction stakeholders who wish to reduce carbon for a combination of compliance, market and societal reasons and also drive innovation in terms of alternative designs and solutions.”

Justin Sullivan, Chair of the ICMS Coalition and Construction Industry Council, added: “The ICMS journey has been a beacon of how collaboration works. We have 49 international public benefit bodies that have together created world-class standards in the construction and infrastructure sectors.

“When it comes to international standards for costs, life cycle and carbon in construction we are the only show in town, true pioneers.

“The timing of the launch of ICMS3, the standard for carbon in construction could not be better with the world stage digesting and implementing the outcomes of COP26. Onwards and upwards.

The International Cost Management Standard (ICMS3) can be found and read for free via the RICS website here.

Picture: a photograph of a person working at a desk, with an ipad-style tablet in front of them. The tablet screen is showing some graphs. A paper diary, computer keyboard and a mug can also be seen

Article written by Ella Tansley | Published 08 December 2021


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