Merthyr Tydfil property owners generally want to know two things about consumer unit upgrades on a ex-council semi: is it necessary, and what will it involve. We work across CF47–CF48 weekly and see the same patterns street after street. The order of work matters: isolate, test, explain, then price. Skipping the middle two is how people end up paying twice. It gets photographed if it will be hidden afterwards.
The point of a proper test is that the result is repeatable by anyone else with the same instrument. In practice that means checking materials matched to the stock before anything is replaced. People often put off consumer unit upgrades on a ex-council semi because they expect the worst. Usually the scope is narrower than feared.



