Realdania is a private philanthropic association based in Copenhagen, Denmark, with historical roots stretching back to the late 18th century. Its origin can be traced to the aftermath of the Great Fire of Copenhagen in 1795, which devastated much of the city and spurred the establishment of Denmark’s first mortgage credit institution, set up to help rebuild by offering affordable property loans. Over time, these mortgage institutions evolved, culminating in the extensive activities of RealDanmark, which operated until 2000.

In 2000, following the sale of its mortgage and banking operations to Danske Bank, the association redirected its capital—then DKK 10.5 billion—toward philanthropic objectives related to the built environment. Since then, Realdania has grown its equity capital to around DKK 22 billion and distributed over DKK 22.4 billion, supporting more than 4,750 projects across Denmark as of 2021.

Only Danish property owners may become members, and today, the association numbers about 190,000 members who elect its broader leadership. Realdania’s activities center on funding and developing projects linked to urban space, buildings, and Denmark’s architectural heritage, both through grants and by leveraging investments. High-profile initiatives include the Blox complex in Copenhagen, which houses the Danish Architecture Centre, and ARoS Aarhus Kunstmuseum. Realdania also holds significant real estate and financial assets and maintains a governance structure rooted in the cooperative origins of its predecessor.

Headquartered at Jarmers Plads in central Copenhagen—a building reflecting its legacy in urban development—Realdania operates independently, with a strong focus on collaboration with public, private, and civic actors to address physical and social challenges in Danish society.