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 As homes become more energy efficient, the embodied carbon used to build a property will outweigh the total operation carbon for the rest of the building's life (source: RICS).

Free estimate of carbon used to build your home or extension, and the price to offset.

Take a few minutes to discover the carbon 'embodied' in your home*. The calculator builds upon the methodology recommended by RICS for projects at RIBA stages A-C.   

*Embodied carbon - the carbon used in the construction of your home.

Our calculator has been carefully crafted with data and methodologies from trusted sources:


UK construction industry is the largest consumer of natural resources in the country with over 400 million tonnes of material consumed each year.

Davis Langdon LLP, 2009


The construction industry accounts for approximately 10% of total UK carbon emissions

ENVEST, 2010


Embodied carbon accounts for 45% of the whole life-cycle carbon of a domestic building (2010).

Roberts, 2010


Demolition, excavation and waste accounts for 20% of carbon footprint of building.

Further reading and helpful guides

Take your carbon analysis to the next level. Discover ways to estimate the embodied carbon more accurately, and how to reduce thew carbon footprint of your home.

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Climate Emergency Design Guide

158-page report with guidance on methods and approaches to reduce the carbon impact of your development.  

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Carbon & Price Book

The surveyor's choice for creating an accurate estimate of carbon embodied in your home. We will be able to plant 1 tree for every copy bought from Amazon via our website.

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Mitigating Foundations

Foundations and substructures account for up to 30% of the overall carbon footprint. This guide provides helpful insights.

Calculator Methodology and Disclaimer

Our embodied carbon footprint calculator for residential buildings is a part implementation of the British Standard - BS EN 15978:2011 Stage A1-A5. We adopted the RICS recommended methodology for RIBA stages A-C, and then supplemented with material-specific data from a variety of sources, including The Inventory of Carbon and Energy created by University of Bath and BSRIA. 

Please refer to our website Terms and Conditions, in particular we make no warranty for the accuracy or validity of the result - it should be treated as a rough estimate only. For an accurate assessment of embodied carbon, please discuss with your architect and quantity surveyor who will be able establish values using EPD (Environmental Performance Data) for the materials used, using the BRE Green Book, EPD data, CESMM4 Carbon and Price Book, or similar.

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