In our builders clean packs we always have a kettle as we've found on many occasions when you get there the hot water supplies still aren't connected.
There's nothing rocket science about doing builders cleans, you just have to be very particular specifically the removal of plaster and paint from windows, frames, doors, floors and any other surface where it's been splashed. Get yourself some 1.5" window cleaning scrapers and a box of spare blades and you're halfway there.