Bathroom extractor: self install?

[Post and beam]

Do i need a sparky to install and more importantly, sign off, an installation of an extractor fan into the bathroom light switch?

[JohnMo]

If it's a building regs job and council is checking, then yes, otherwise all depends, are you competent?

[Alan Ambrose]

I think that if you don't already know the regs that apply e.g. 'special location / SELV / RCDs / notifiable to BC under Part P' etc - then you probably do.

[Mr Punter]

I would say no but if it is part of a new electrical install you will need it all tested and signed off for part P.