This is is one of three houses in Willow Road, designed by architect Ernő Goldfinger. These houses were early examples of Modernist buildings and the influences of architects Ove Arup along with Adolf Loos are evident. The building is mainly of concrete framing with a brick facing, part of the concrete frame is exposed on the front of the building.
https://www.nationaltrust.org.uk/2-willow-road 5 minutes Hampstead Heath Overground