The estate agents stated that the new build next door was due to WWII bombing. Never had positive confirmation of that until coming across this site — a WWII bomb mapping effort that shows next door was in fact bombed. Sometime between Oct. 7, 1940 and June 6, 1941 and ‘Aggregate Night Time Bomb’ fell.
Bomb Sight has mapped the WWII bomb drops in and around London. Use their interactive mapping tool to view the locations for yourself.