cavity brick with plasterboard finishes, concrete lintels. Good loft access, generous under-floor voids and a straightforward driveway make the physical work easy; the variable is always the CU generation.
If you own a post-war semi in Ystrad Mynach and need consumer unit upgrades, the right spec is usually not the most expensive one. 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.
That is the standard we quote to. Fixed price, honest survey, SPD retrofit, and paperwork the next EICR won't question.
Focus on the hallway or garage, the consumer unit location, and the intended cable route. Usually 15–30 minutes on-site or a short photo set.
Priced against your post-war semi's specific construction, not a template. Route sketched, materials listed, no line-item surprises.
Diary planned for the access constraint that matters on this stock — good loft access, generous under-floor voids and a straightforward driveway make the physical work easy; the variable is always the cu generation.
NICEIC certificate, photo evidence of hidden work, Part P where applicable — all emailed the evening the job signs off.
Good loft access, generous under-floor voids and a straightforward driveway make the physical work easy; the variable is always the CU generation.
Wiring generation on this stock is typically rewired 1990s–2010s; kitchen and bathroom often updated separately with mixed board vintages. On a post-war semi you should expect us to flag: kitchen refit added post-rewire, socket circuit no longer matches the original ring layout; bathroom shower feed on a 6mm radial with an isolator hidden above the ceiling; outside tap or outside socket added on a spur without RCD protection.
Materials and methods we spec on post-war semi work: metal-clad 18th Edition CU with RCBO per circuit; SPD retrofit; shower feed uprated to 10mm where the run length demands it. Everything is priced on the quote — nothing added on invoice.
Across CF82 the post-war semi stock we've worked on shares consistent patterns: kitchen refit added post-rewire, socket circuit no longer matches the original ring layout. That local pattern is baked into the quote, not discovered on the day.
For a post-war semi usually yes — a 15-minute survey or a set of photos of the hallway or garage and the consumer unit is enough to write a fixed price.
A CU swap is usually enough. We test every circuit at survey and only recommend rewiring where the readings genuinely justify it.
metal-clad 18th Edition CU with RCBO per circuit; SPD retrofit; shower feed uprated to 10mm where the run length demands it. All on the written quote.
Two things: kitchen refit added post-rewire, socket circuit no longer matches the original ring layout, and the wiring generation — rewired 1990s–2010s. Both go on the quote, not the invoice.
Not unless the quote says so. On period stock in particular we route through floors, lofts and non-original plaster; cornices, dado rails and original panelling stay intact.
Owners of post-war semi properties in Ystrad Mynach, Caerphilly and the wider area get one point of contact for the lot — quote, work, certificate, after-care.
Practical next step: photos of the hallway or garage or a 15-minute survey, fixed written quote back inside 24 hours, work booked around your modernise without a full rewire. That's the whole process for a Ystrad Mynach post-war semi, on one page.
One local point of contact for post-war semi work across Ystrad Mynach and the surrounding Caerphilly / Bargoed area — quote, work, certificate and after-care.
