I’ve said it before, but it’s not a given that a house in the property price register means it has sold (or sold at arm’s length). There’s no sign of any movement in the Land Registry on the ownership of that house but as the sale was only a few weeks ago that’s not unusual and it might follow in the coming weeks.
Notwithstanding that, and assuming it has genuinely sold for the sake of analysing the sale; 41 South Hill was 270 sqm in size, with south-facing rear garden set out in multiple landscaped terraces with pleasant views over Temple Park and beyond thanks to its elevated position. Its closest comparable on the market at the moment is 45 South Hill asking €950k (down from €1,050k), which is on the same stretch of street. No. 45 has the benefit of being detached but is significantly smaller at 195 sqm and it’s a slightly more modest looking house - 41 is slightly grander and has a prettier rear elevation with part redbrick / part pebbledash complete with bay windows. Without having seen the inside of No. 41, just looking at the front and rear facades, it looks like a house that has been updated, e.g. all windows recently replaced and modern coloured gates, walls, etc. So in short I expect it’s probably a move-in ready house that is 38% larger than No. 45, hence potentially justifying the 35% differential in prices.