What matters for full property rewires on a post-war semi is the condition of this installation, not the average condition of installations generally. On this stock the sensible answer is metal-clad 18th Edition CU with RCBO per circuit — matched to the wiring generation, not a lift-and-shift from a new-build brochure. Age alone does not condemn an installation. Plenty of older Swansea wiring tests perfectly well; some newer work does not. The alternative — ignoring priced against your post-war semi's — tends to cost more later.
Whether the property is owner-occupied or let in Swansea, the technical work is identical — only the paperwork's recipient changes. It is the kind of detail that separates a tidy job from a callback. Whether this is urgent or simply overdue, the sequence for full property rewires on a post-war semi does not change much.



