Funnily enough, I lived within a few doors of the MacColl residence in Beckenham for a couple of years when I was at college so this was 1964-1966. They were pretty huge houses and even in those days many were divided into flats. Somehow I was the leaseholder for two of the three flats and had the (difficult) job of collecting the rent from all the students who had a room there to pay to the letting agency. It has seven bedrooms in total but even what intended as living room and lounge etc. were occupied as single student rooms.
Ours had been rented to students for some years and was the only run-down house in the area. I think that most of them have now been converted into flats, but a quick check on house prices for those that remain as single occupancy in the roads in that area and that reveals that their current prices seem to be in the range of £1 to 2 million, so you can imagine the sort of house that is being discussed here.