The couple freely inhabited the house for eighteen years before Communists seized control of it in 1948. In 1968, after the death of Milada Müllerová the most important parts of the Villa fittings and collections were purchased by the Museum of Applied Arts and the National Gallery. The Villa was then pronounced a Cultural Monument of the Czechoslovak Republic. It was used as a storage, library, and later as a location for the institute of Marxism–Leninism. After the fall of Communism in 1989, the house was turned over to the Müllers' daughter, Eva Maternová. She sold it to the City of Prague in 1995, who put it in the care of the City of Prague Museum. The house was restored in 1998 and finally re-opened as a museum in 2000.