[2] In 1725 Edinger sold the house to King Frederick IV who transformed it into a residence for Crown Prince Christian (VI) with the assistance of the architect Johan Cornelius Krieger.

In 1757 Lauritz de Thurah, Eigtved's successor as Court Architect, carried out a minor expansion of the complex on the corner of Frederiksholms Kanal and Stormgade.

[3] Later in the century the royal family discontinued their use of the property and instead it came into use for other purposes, mostly as a residence for artists, courtiers and other peers with close ties to the court.

After the turn of the century, the residents included Royal Master Builder Christian Frederik Hansen who lived there from 1805 until 1834 while working on such projects as the construction of the new Copenhagen City Hall and the rebuilding of the Church of Our Lady and Christiansborg Palace.

The fire of the first Christiansborg in 1794 did not only leave the royal family but also the Supreme Court of Denmark homeless and it found a new home at the Prince's Mansion.

On the opposite (Stormgade) side, they created a colonnade along the entire length of the complex, from Vester Voldgade to Frederiksholms Kanal.

He covered the interior courtyard of the connecting wing with a glass roof, transforming it into a central lobby entered through the museum's new main entrance located in the recessed section of the facade toward Ny Vestergade.