Robert van 't Hoff which he christened "De Stijl" and in which he and his wife lived shortly after their marriage in July. This was conceived as an attempt to "further the new direction" and he was involved in every aspect of the interior and exterior design including the furniture and fittings. Van 't Hoff's preference for Bart van der Leck over van Doesburg for the painting of the interior was the first sign of tension between the two, but a commission for van Doesburg from van 't Hoff for a colour scheme for the interior of a house he was designing for the
Bart van der Leck disagreements with Mondrian his abstract style became based on representational images. His painting Tryptich is an example, in which he transformed sketches of a mine in Spain into seemingly abstract shapes. In 1919-1920 he created the interior design for , in the Hoge Veluwe estate. The hunting lodge was designed by Hendrik Petrus Berlage. In 1930, he was commissioned by Jo de Leeuw, owner of the prestigious Dutch department store Metz & Co. to design interiors, window packaging, branding and advertising. For these print materials van der Leck developed a rectilinear, geometrically constructed alphabet. In 1941, he designed a typeface