Pieter de Graeff lived in the cityhouse at Amsterdam's Herengracht No. 573, today's Tassenmuseum Hendrikje, the country estates Valkenburg, Vogelsang and Bronstee, and Ilpenstein Castle. Valkenburg (the former estate Valckeveen of his grandfather Dirck Jansz Graeff) near Heemstede, acquired Pieter, his uncle Andries de Graeff and his cousin and brother-in-law Gerard Bicker (I) van Swieten in 1675 in equal shares from his aunt Christina de Graeff (1609–1679).Johan Engelbert Elias, De Vroedschap van Amsterdam, 1578-1795, Deel 1, p 520 From 1685 Pieter was the sole owner.Johan Engelbert Elias, De Vroedschap van Amsterdam, 1578-1795, Deel 1, p 422 In his diaries he made several notes on negotiations and payments from his possessions. He encountered some problems with the famous graphical artist Romeyn de Hooghe, who was going to draw an artistic map of Valkenburg. Besides he had some maps coloured by the artist David Reerigh, who also coloured several maps of the Hoogheemraadschap of Rijnland of 1687.
