Calculate your climate footprint in 10 minutes top time.
Take the testWe do not consider cases where the extension has already been depreciated. The extension is considered as a new build, with an emissions factor identical to that of a new house. However, this footprint is probably already taken into account in the surface area of the dwelling entered. An additional footprint must therefore be added if the basic house has already been depreciated.
To find out more about this rule in our model, run the calculation by clicking on the button below.