Pictures from the early 20th century, especially those taken by Eugène Atget and the Frères Seeberger, show the life of Jewish artisans from Russia, Poland, Romania, and Ukraine who lived in the building.
A first restoration campaign began in 1978 directed by Jean-Pierre Jouve, Chief Architect of the National Office of Historic Monuments and Sites.
The second restoration campaign opened in 1991, directed by Bernard Fonquernie, also Chief Architect of the National Office of Historic Monuments and Sites.
The mansion was built on a large irregular plot of land occupied by the townhouse Claude d’Avaux inherited in 1642.
To create a sense of symmetry, Le Muet decorated the blank wall of the adjoining property on the left with pilasters and false windows imitating the right wing.