the developer board is usually 18th Edition but often maxed out — an RCBO board plus SPD is a small upgrade that unlocks the whole house. In Aberdare specifically, that plays out against a housing/premises mix of ex-mining cottages in Trecynon and Cwmbach with original 1950s wiring, alongside 1980s semis in Aberaman.
We quote consumer unit upgrades across CF44 on a fixed basis, invoice the homeowner, and deliver the paperwork in the format your agent or solicitor expects.



