His father became a member of the newly formed Heemstede building society Tuinwijk Zuid in 1918 and moved there when this project, designed by the architect J.B. van Loghem, was completed in 1923.
After the war they returned to their house in Tuinwijk Zuid, which had been occupied by Jan Nederkoorn, the same man who had denounced his father and been the direct cause for the deaths of his mother and siblings.
When the wife of this man came calling in the company of a police officer to collect belongings she claimed to have left behind, Jules' sister slammed the door in her face.
He took lessons from Henri Frédéric Boot who lived across the street from the workshop he purchased to double as a gallery and in 1950 he had his first public exhibition in the Huis van Looy.
[4] According to the RKD besides being a pupil of Boot and Verwey, Chapon became a member of the Haarlem artist society De Groep in 1951.