Hugh Jackson, representing Mrs Massouri, told Judge Nicholas Caddick KC that in 2002 she and her husband, who died in 2013, built a mansard roof extension on top of their second-floor flat ...

Cons Can be particularly expensive, doesn't look very natural due to the change in roof slope. Mansard extensions run along the whole length of your roof and will alter the angle of the roof slope, ...

Rules introduced by the previous Conservative government that favoured only one type of loft development – known as mansard roofs – will be widened to include all forms of upward extension.