@ Cattitudes I think the risk would affect other houses in the street too, not just the one with the pylon. At least they can't hide it whereas the others you might turn up and find cables overhead.
Yes, if you look at the road on Street View, about 3 houses along there are some rather larger and rather swish (compared to the rest of the houses on the street) that have newly been built. With the cables right over them. I guess they didn't know. Or didn't care.