Brook House (Park Lane)

A decade later, he acquired the adjacent lot numbered 28 and sought permission to build a mansion overlooking Hyde Park, based upon designs from Thomas Henry Wyatt.

The interior from the entrance on Upper Brook Street opened to a mahogany staircase that rose two stories, lined in variegated marble.

The library was furnished in cherry paneling and the dining room was decorated with carving from the recently demolished Draper's Hall.

Between 1905 and 1907, Cassel carried out renovations to the property designed by architect Arnold Mitchell and built by the firm of Holland and Hannen.

[4] Cassel's granddaughter, who would later become Edwina, Countess Mountbatten of Burma, from the time she was a child and her mother died, had a room in his home.

[1] In 1931, Edwina put the house up for sale, citing high taxes and the cost to maintain the property,[4] but there were some problems with the will, forcing delays.