Two special spaces have been given a specific function. The threshing-floor has been converted into an activity space with movable interior elements on wheels. The hay barn has been restored and returned to its original glory. A free-standing glass room has been placed inside, retaining the beauty of the original open structure, as the impressive construction of the hay barn remains visible from the climate-controlled glass room. The threshing-floor and the hay barn are the heart of the care complex, together with the patio in the courtyard.

Next to the farm, a new wing has been constructed in the shape of a contemporary barn. A reddish-brown timber façade and a double saddle roof contrast subtly with the architecture of the original farm. Two communities of eight rooms have been created in the newbuild. The new and the old sections are connected through a glass corridor.

The landscape and monumental qualities of De Oude Mars have been reinforced through its transformation. The surrounding estate has been redeveloped into a residential neighbourhood, so the residents of De Oude Mars are living right inside society. The immediately surrounding outdoor space of De Oude Mars has been landscaped into a green area with a vegetable garden, orchard and fields for animals, which means the residents of the new neighbourhood have their own green and protected area.