Buying a BISF house, does it need a PRC guarantee?
You're welcome Lauren, I was just in the middle of composing a rather lengthy reply so thank you for letting me know as I can now let my typing fingers rest for a while. ?
Just for info, if you do consider a BISF in the area in the future, try to see if you can purchase one that has already been externally insulated. They are far better thermally and it will save you from splashing out to have it installed later as EWI costs appear to be on the rise.
Good luck with your house hunt!