The rebuilding of the palace from the foundations, mentioned in the will, can be reconstructed in detail from the documents preserved in the Corsini Archive.
Work began on February 20, 1601, when the first “…expenses for masonry” were recorded at the “place called Le Corti…”. A few days later, 40 scudi were paid to Santi di Tito, “architect of said masonry”. The construction site progressed steadily throughout 1602.
In the initial phase, most of the expenditure concerned, on the one hand, the transport of debris from the old structure and the earth removed from the hillside where the Villa would rise; on the other, the purchase of large quantities of lime, measured in some—that is, in “loads” transported by cart from the kiln to the site.
Alongside this, the purchase of an enormous quantity of straw and bran for pack animals conveys the sheer magnitude of the undertaking.
By 1603, references to roof gutters appear, and the first purchases of roof tiles are recorded. This does not imply that the building was already fully constructed, but rather that it was necessary to “cover” certain rooms in preparation for winter.