My house is undergoing a major renovation, and it surely needs a whole house wiring work. They quoted around Rm15000, and i think is reasonable enough since its going to be changed 3-phase from single phase.

So before i deposit a huge sum to them, i'd like to have everything in black and white so if anything happens, im prepared.

I'd to ask what are the things i should include in the agreement?

Thanks

Itemised loh.

Does it include new earthing? How many core armor cable? How many DB Box? include installation of lighting and Fans? How many socket looping?