I was approached by a friend at the weekend who came to me for advice. He has, as i'm sure many people must do, got a relative to relocate an extract fan and their electric shower in his bathroom without realising that this work is notifiable under the Building Regulations. The person who has done the work is happy that it is safe as he has done DIY electrics for many years prior to the Part P Regs but he is not a competant person so cannot certify the work. Obviously the work is complete now and so inspecting the work is going to be difficult, particularly with it being in a bathroom which has now been tiled. Legally i assume they should submit a retrospective application to the LA and get the work signed off but is this possible without ripping the fan and shower out and getting a qualified spark in to re-do the work? I'm not sure what to advise him to was looking for some advice from forum users?