The current Clubhouse was designed by L.S. ZIA in the early 1900's. This attractive four-storey composite building's original address was No. 155 Tai Cang Road, which used to be lined with stationery shops in the mid-20th century.

It is hard to trace back who the first owner of this magnificent building was as it had changed hands frequently in the past. In 2001, the Shui On Group refurbished the period building, renamed it One Xintiandi, and used it as the clubhouse of the Group.
Within the whole Xintiandi plaza, One Xintiandi is among the best preserved of the original houses. This building is not one of the Shikumen-style structures, but is categorized as an 'Alley Mansion', which is rarely found in Shanghai these days. During the war with Japan, the building housed a primary school. A few years before 1949, the building was used as a private mansion by a Mr Mao Boyong, a businessman who sold stationery. Mao Boyong turned the northern facade into a shop and the southern section was preserved as the dwelling quarters for his family. After 1949, the building was taken over by the government and used for offices. Later the building was renovated to house working class families. The number of households in the packed building had reached more than 40 when the building was vacated.

Just like the other old buildings in the complex, One Xintiandi's exterior walls were left intact after the renovation. But after housing generations of families, the building was no longer waterproof and a lot of the timber had decayed. To solve the problem, the foundation of the building was elevated and a concrete buffer was wedged in between foundation and ground. And without major work on the walls, a waterproof layer was installed, which should last for up to fifty years. Similarly, over the years, the tiles on the roof were no longer waterproof or heat-resistant. So the roof was retiled with waterproof traditional tiles made of modern insulating materials.

After the renovation, the building still had its original shape and structure, but the round-pebble pavement was copied from the original, as were the wooden staircases leading to upper storeys, the courtyards, ventilations and the skylights. The detached garden, garage and driveways were not fully restored to their original layout, as it would have affected the commercial use of the building. A balance between functionality and aesthetics has been achieved.
The building's exterior still remains true to the 1920's design, but the interior has all the modern amenities of the 2010's. The old Shikumen buildings have no sewers or gas outlets, so during the renovation these were added to the old elegant buildings. To make the foundations more solid, the building's foundations were increased to nine metres underground.

The One Xintiandi building has some structures which are different from the original.