In his will, the architect donated the house to the Foundation Board of La Sagrada Família, which sold it to the Chiappo Arietti couple.

In 1960 the Friends of Gaudí association started a campaign so as to purchase the house to the Chiappo Arietti's descendants in order to convert it into a museum.

The basement is not open to the public and the second floor houses the Enric Casanelles Library, which can be accessed with prior permission.

As for the collection, some rooms, such as the bedroom, the study or the inner door, as well as some personal Gaudí belongings, evoke memories of when the architect lived in this house.

The collection also includes furniture, sculptures, paintings, drawings and other objects of Gaudí coworkers that are exhibited in several rooms.