During the Great Depression, Groenewegen left the Netherlands to establish his own new firm in the Dutch East Indies.
[4] Like Schoemaker for the city of Bandung, Gronewegen can be considered as representative of modernist Nieuwe Bouwen in Medan.
[8] Other designs in Jakarta are the houses for the Java Bank (1952), Sumber Waras hospital in Grogol (1957), a crematorium (1958) and the Dutch embassy and chancery (1960 and 1966).
From 1957, Groenewegen worked in association with Indonesian architect F. Silaban, e.g. for Bank Indonesia in Jakarta.
[1] Groenewegen also had several works outside Medan and Jakarta, e.g. the Sumber Waras hospital in Padang (1956-1957), Savoy cinema in Bukittinggi (1957), and Museum Seni Modern in Bali (1959).