A friends uncle has bought a pub which he has converted into a house. It has 4 chalets (brick built, in a terrace) which have power already supplying them. If i were to do electrical work in there, would it be subject to being Part P registered? The chalets are classed as business use, so i'm not sure if Part P applies, in regards to signing the work off. I've passed C&G 2360 1+2 so would i be able to legally do the work and sign it off?