Every enquiry we take from Swansea starts in the same place: what is the installation actually doing right now? In Swansea specifically, that plays out against a housing/premises mix of coastal terraces in Mumbles and Sketty, older miners' housing in Morriston, and post-war semis around Gorseinon. The most useful thing you can tell us on the first call is what changed immediately before you noticed the problem. Most Swansea visits settle this within the first hour.
Property in Swansea varies street to street, so the honest answer to "what will it cost" is that it depends on invoice routes to the buyer as standard. Split billing — checkable in under an hour. Older installations around SA1–SA7 show this more often than newer ones. Consumer unit upgrades for home buyers touches safety, paperwork and cost, and the three do not always point the same way.



