[4][5] It was later used as the Trade Office (Negotie Kantoor) of the Dutch East India Company (VOC) and by 1760, 18 book-keepers and 18 clerks were working in the building.

The post office is a single-storey building constructed from cabook (coral stone), with a lime and sand render, and traditional half-round terracotta roof tiles.

The post office building was gazetted as an Archeological Protected Monument in 1974[7] and in 1988, UNESCO declared Galle Fort a World Heritage Site.

[9][10] In August the Cabinet Committee on Economic Management (CCEM) directed that the building be transferred to the Galle Heritage Foundation, with proposals to be sought from prospective parties for the renovation of the building, in accordance with the conservation principles stipulated by UNESCO and the Galle Heritage Foundation.

The Galle District Assistant Archeological Commissioner said "the roof of the edifice was in a severe state of dilapidation as the rain water had seeped into the huge walls of the building.