Taking into consideration the distribution of space inside and the shape of the originally two-sloped roof, Isa Belli Barsali maintains that the building would have been constructed during the second half of the 16th century.
Studies carried out on behalf of the Grabau family attribute the construction (by the Diodati family) to the beginning of the 16th century. The original garden design is contemporary to the building's construction, while the use of space facing uphill is datable to the end of the 16th/beginning of 17th century.
In the 1800's, when the villa belonged to the Cittadella family, the part of the garden facing downhill was transformed into an English style garden and the building also underwent changes according to the fashions of that time. The portico of the façade facing downhill has been closed and is now a room with neoclassic decoration on the original walls. The roof has been redone adding busts made of marble in the cornices. Cornices have also been added to the windows on the top floor.