Not only do the respective meters have to be removed. Speak directly with the suppliers; they also have to physically disconnect the house from the grid, i.e., the lines are cut at the property boundary. Then tell them right away to install a construction power connection box and a construction water connection. Otherwise, I would have had to pay €760 back then for disconnecting the power supply and another €800 three weeks later for the construction power box. So talk to them beforehand.