Check out Elrond Burrel's blog: Passivhaus in Plain English
Elrond is a New-Zealand born, UK-based architect, who builds some very nice passive houses.
I especially liked Elrond's "Ten things I hate about passivhaus" which includes gems such as: not being able to just check boxes to deliver sustainable buildings, not being able to hide poor details, and arguing with building services engineers. Read it here.
