The £1.5 million Hothouse for Free Form Arts Trust includes working and living spaces for artists, workshops, and training and conference space. It is being designed for a brownfield site on the edge of Hackney's London Fields. The boomerang-shaped site suggested a floor of offices overlooking London Fields with three penthouse flats above.The ends and corner of the site are marked by single-storey glass structures, one of which is a cafe with a cherry tree growing through the glass roof. The upper floors facing the adjacent railway arches are irregularly arranged panels which bounce the sound of trains away from the site. Dewhurst Macfarlane is the structural engineer, Fulcrum is the services engineer, Hanscomb is the quantity surveyor and Michael Mitchell is the project manager.Photograph by Andrew Putler.