When is Rewiring Necessary?

If a property hasn’t been rewired in the last 25-30 years, it will probably need upgrading, whether partially or fully, to ensure it complies with current safety standards. Given the sheer volume of electrical devices used in modern households compared to the 1980s and 90s, the existing wiring might be under strain from a high level of electricity usage, and could potentially be dangerous.

A full or partial rewire might also be required if you’re planning major renovation work that would be defined as a ‘material alteration’ by the Building Regulations. This will usually include an upgrade of the fuse board. In the case of room extensions and attic or garage conversions, any new wiring will need to comply with Part P (Electrical Safety) of the Building Regulations, and existing wiring in those rooms will also need to be improved to ensure it can safely carry additional loads; is earthed according to current requirements; and has satisfactory cross bonding. If you’re remodelling or extending, the wiring in the rest of your property won’t need upgrading unless required by the Building Regulations’ energy efficient requirements, e.g. central heating controls.