House falls down

In London basement extensions are all the rage in some parts. Things don’t always go to plan as this news story on the BBC shows

http://www.bbc.co.uk/news/uk-england-london-34935821
A house once owned by the singer Duffy has collapsed into a pile of rubble.
The property in The Terrace, Barnes, south-west London, was reportedly undergoing a basement extension when it collapsed at about 11:53 GMT.