Amin Taha’s Groupwork has started building a 10-storey block of flats in Hampstead, north London, with load-bearing lava stone The scheme, which contains 22 flats as well as lower-level office space, ...

It may be perceived as ‘unusual’ and ‘challenging’ by main contractors and ‘special’ by quantity surveyors (all of which implies ‘more expensive than conventional methods’), but the post and lintel ...