From shop panelling to interior designs
After panelling several shops, in the early 1950s the company was approached by Schuitema, the owner of the Centra supermarkets, to panel a grocery store. The success of this project marked the beginning of a long business relationship with Schuitema. Schuitema opened self-service shops throughout the Netherlands and Van Keulen was responsible for the interiors. The arrival of supermarkets in the 1960s created an extra growth spurt.

1963: Founder Lammert van Keulen (left) in the factory at Groen van Prinstererstraat
Expanding and deepening
The activities of Van Keulen continued to expand over the following decade. Besides shop interiors, mobile homes were designed and built by Van Keulen Mobielbouw. Another branch, Van Keulen Kooien, produced extremely robust birdcages.
The first acquisition took place in 1980. Van Keulen Interieurbouw acquired the company BEKA Winkelinterieurs and opted for decentralisation so that it could serve all customers operating nationally. After a brief decline and restructuring during the crisis in the early 1980s, Van Keulen Interieurbouw was soon achieving good results again. The second half of the 1980s was a period of great success and explosive growth.
The expansion of activities was well reflected in the Van Keulen Interieurbouw factory in Nijverdal, which continued to grow. Besides wood work, the facilities now also included metal fabrication, sheet metal fabrication and metal powder coating.