I always find it rather puzzling how the moniker 'modernism' can have found itself attached to a particular architectural movement - didn't anyone realise that there would come a day when it was no longer actually modern?
That said, the focus on light and space that characterises the modernist movement of the 20's and 30's does still feel fresh and this elegant property that has come up for sale in Dulwich, SE26 is a fine example of the genre. It was designed in 1932 by the Tecton practice, headed by the darling of the British Cement Association, Berthold Lubetkin, probably best known for designing the penguin pool at London Zoo. The house was built by the engineer Ove Arup whose firm later went on to collaborate on the Sydney Opera House, the Pompidou Centre and the Gherkin. It has been lovingly restored by architect John Winter and is now on the market with The Modern House for £1.5 million. (Thanks to Albert for the tip-off)