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Brief Published: 12 Nov 2012

World’s Thinnest House, Poland


As a prime example of infill architecture (which utilises the gaps between existing buildings), Polish architect Jakub Szczesny has created what he believes is the world’s thinnest house in Warsaw, Poland.

Conceived as an artist’s residence – and a temporary one at that – it’s currently more of a promotional stunt than a genuine living solution. But it does demonstrate the possibilities of appropriating previously overlooked spaces. 

Dubbed Keret House, the two-storey structure has been built between two buildings that once flanked a narrow alleyway and hovers 10 ft off the ground. At just 4 ft wide and 33 ft deep, it provides just 150 ft of living space – enough for a small bedroom, bathroom and kitchenette. The interiors are bathed in white, and the façade and roof are both made from a semi-translucent polycarbonate – in an effort to make the otherwise claustrophobic space feel a little larger on the inside.

The building has been deemed too small to reside in for more than seven days at a time. As a result, it will be looked after by the Foundation of Polish Art, which will ensure that the residents are regularly switched.

For more information on how architects are embracing the idea of infill architecture, see our report Filling The Voids: Architecture Between the Gaps. For more on how architects and brands are dealing with compact spaces, see Going Micro: The Art & Science of Designing Small Spaces, and Compact Stores.


Polish Art Foundation