Mountain Ash sits inside the area we cover daily, so consumer unit upgrades on a ex-council semi here is routine work rather than a special trip. On a ex-council semi you should expect us to flag: council-era MK plastic split-load CU still installed — reliable but no SPD, no per-circuit RCBOs; external meter cabinet with the tails routing through an exterior wall — sometimes on an older tails spec; shed or outbuilding sub-main added without a dedicated RCD. The cost drivers here are access and condition rather than parts. Priced against your ex-council semi's specific construction, not a template is the one that moves a quote most. That detail is what a proper survey is for.
Where an installation has been extended over decades, the sensible approach is to establish a baseline before adding anything else to it. That is one reason our price does not move after the survey. Before booking anything for consumer unit upgrades on a ex-council semi, it is worth knowing which findings change the price and which do not.



