I have bought a 20 year old house and I'm not sure whether to rewire the whole house. I would like to change and add lighting and electrical points as well as cat 6 cables. If I rewire the house, do I need to change all drop ceilings and replaster all the walls?
Also, the existing db box is 63amps 3 phase. Is this sufficient for a 2 1/2 storey house with 6 bedrooms?