Remment Koolhaas, usually abbreviated to Rem Koolhaas, was born on 17 November 1944 in Rotterdam, Netherlands to Anton Koolhaas (1912–1992) and Selinde Pietertje Roosenburg (born 1920). His father was a novelist, critic, and screenwriter. Two documentary films by Bert Haanstra for which his father wrote the scenarios were nominated for an Academy Award for Documentary Feature, one won a Golden Bear for Short Film. His maternal grandfather, Dirk Roosenburg (1887–1962), was a modernist architect who worked for Hendrik Petrus Berlage, before opening his own practice. Rem Koolhaas has a brother, Thomas, and a sister, Annabel. His paternal cousin was the architect and urban planner Teun Koolhaas (1940–2007). The family lived consecutively in Rotterdam (until 1946), Amsterdam (1946–1952), Jakarta (1952–1955), and Amsterdam (from 1955).[3][4][5]
His father strongly supported the Indonesian cause for autonomy from the colonial Dutch in his writing. When the war of independence was won, he was invited over to run a cultural programme for three years and the family moved to Jakarta in 1952. "It was a very important age for me," Koolhaas recalls "and I really lived as an Asian."[6]
In 1969, Koolhaas co-wrote The White Slave, a Dutch film noir, and later wrote an unproduced script for American soft-porn king Russ Meyer