The idea of the project is to capture south light on an east‐west lot bysplitting and offsetting the second floor of a narrow and deep infillhouse. The offset between the two levels in section becomes anopening that allows the south light into the main floor and in plan itbecomes a void that allows a straight cascading stair to pass through.In the elevation the offset of two one and half storey volumes on onehand defines the entry and on the other creates distance between thesouth face of the top volume and the neighbor. Two cozy outdoorspaces are created for the lower second floor as the result of thisvolumetric shift. At the end the project tries to use a geometric shift tocreate a house that constantly changes mood and character by thechanging qualities of light during the day.