The refurbishment began in 2015 with the addition of two buildings with a total floor space of over 1,000 square meters at the rear of the palace. Primarily constructed as a fire safety measure, these buildings also contain two elevators, modern restrooms and the air conditioning system. Klessheim Palace thus now features barrier-free access and full air conditioning for the first time in its history.
The extension also houses the restaurant kitchen, staff common rooms and storage facilities.
The focus in 2017 lay on the renovation of the building’s exterior. Great emphasis was placed thereby on conserving or restoring its original appearance and thus preserving the historic building. An analysis of the existing layers of paint allowed the façade to be faithfully restored in its original 18th-century color. The stucco work was reconstructed in minute detail. The historic wooden windows were likewise faithfully restored. To protect the fabric of the building, the roof was also completely renovated. The historic roof structure was also renovated and restored to its original look.
By totally renovating and restoring Klessheim Palace, Casinos Austria has preserved the historic fabric of the building and increased its value for the long term.