Alma/nac were approached by a young couple in order to extend their slim house on the busy high street of St John’s Hill, Clapham, London.

The uniquely narrow proportions, measuring just 2.3m internally throughout, presented certain challenges in terms of organising the spaces. alma-nac managed to construct the Slim House, on budget and within these tight constraints.


The characteristic sloped roof greatly reduces the cost of construction, with staggered rooflights providing views out while ensuring light penetrates ot the centre of the property. A light well was introduced and a cranked floor plan provides a lofty double height dining space, and generous storage on each floor.







Source :

Architecture: alma/nak

Location: Clapham, London
Photography: Richard Chivers