Way back in September 2013 we posted a piece comparing our demo house to Passivhaus and Enerphit.  I’ve provided updated figures here based on our actual bills for 2014:

The figures pretty much speak for themselves. Remember, we didn’t follow Passivhaus, we just followed sensible principles, worked out the cost effective solutions applicable to our house, and then installed them. The cost was only £12,000 to £35,000 above a standard renovation depending on what you include.