A recent study by Encraft shows that taking into account the whole life cost of a house, Passive House construction is 2-5% lower than traditional construction methods.
CLICK HERE for the article and HERE for the full article.(788kb)
This article concurs with the article posted by Kate de Selincourt last year for Passive House Plus magazine that explains how the perception that Passive House is more expensive has come about.
CLICK HERE for the post & link to article by Kate de Selincourt
It should be remembered that both pieces of research are UK based and that in Ireland (where the Building Regulations are much closer to Passive House standards), the cost saving differential is much greater.