Trübel is a minimalist house located in Dielsdorf, Switzerland, designed by L3P Architects. After the removal of border limit clearances only 5 m x 9 m are left over in this small steep lot at the vineyard at Dielsdorf. With a maximum of 83 m2 above-ground level living, this lot has long been considered unbuildable. A classical residential house with solid outer walls, conventional access staircase and traffic area has no space on this site.