WARSAW, POLAND -- Israeli writer Etgar Keret has gone to great lengths to lay claim to inhabiting the world's thinnest house.

His unspacious home is being built in the crack between two buildings in Warsaw, Poland. It's widest point is 52 inches - that's barely more than 4 feet. At its thinnest point, the structure measures just 28 inches wide. The two-level home includes a bedroom, bathroom, living room and kitchen. It is expected to be completed this December and will total approximately 156 square feet.

Known alternatively as Ermitage or the Keret House, the space will serve as an hermitage studio for Keret and invited creative and intellectual types.

The house will be built from a three-dimensional steel frame, covered with plywood and insulation panels finished with concrete cloth. Its space-saving stairs go down to let people inside.

The Keret House is the work of the unconventional architecture firm Centrala, founded by former students of the Warsaw Technical Institute.