In 1907 he began studying art history at the Friedrich Wilhelms University in Berlin and was a student of Heinrich Wölfflin and Max J. Friedländer, with whom he had a lifelong friendship.
[4] In 1910, he moved to London, where he ran an antiquarian bookshop at 47 Duke's Street, St James's, with the Swiss Martin Hofer (1889–?)
[6] There he took over the department of old art and developed and organised exhibitions of artists such as Max Beckmann, Oskar Kokoschka, Ernst Barlach, Martin Bloch and Edvard Munch.
[7] In 1923, Blumenreich acquired a plot of land in Berlin-Grunewald Wildpfad 28 and commissioned the architect Fritz Ruhemann to build a villa.
[10] In 1924, Blumenreich went into business for himself and opened his gallery at Schöneberger Ufer 37, specialising in Dutch art and Old Master drawings and prints.