A certain type of property developing in London is happening a lot, and is probably what is happening here: Not allowed to build upwards, no space to extend horizontally, so the only option is to build down.
I saw a TV programme about it recently, some of these residences have multiple below-ground storeys, with gyms, swimming pools, home cinemas, usually commissioned by people with too much money and not much sense. It's their neighbours I feel sorry for, their foundations are also compromised. One old dear that was spoken to showed the giant cracks that were growing on the internal walls of her house, but so far had no luck tracing the "new neighbour", whom she has never seen.
Even some sink holes have been found to be the result of this.
These folk are using the streets of the more affluent parts of London as their own giant Monopoly board, and need to be held to account, if they can be located.
I just dropped in, to see what condition my condition was in
T/T: Inspire Monarch, X200 tonearm, Ortofon Quintet Blue. Phono: Project Tube Box CD: Marantz CD6006 (UK Edition); Amp: Musical Fidelity A5 Integrated.
Speakers: Zu Omen Def, REL T9i subwoofer. Cables: Atlas Equator interconnects, Atlas Hyper 3.0 speaker cables
T'other system:
Echo Dot, Amptastic Mini One,Arcam A75 integrated, Celestion 5's, BK XLS-200 DF
A/V:
LG 55" OLED, Panasonic Blu Ray, Sony a/v amp, MA Radius speakers, REL Storm sub
Forget the past, it's gone. And don't worry about the future, it doesn't exist. There is only NOW.
KICKSTARTER: ENABLING SCAMMERS SINCE 2009