The Engineer's Office of the Former Pumping Station, Water Supplies Department, sometimes called "The Red Brick House", is located at No.

In 1890, Osbert Chadwick, consulting engineer of the Crown Agents, proposed the building plan for a water supply system in Kowloon.

Originally, the pumping station was a complex which comprised three two-storey buildings and a tall chimney for the boiler.

With the supply of fresh water, commercial activities could take place and normal daily living was assured.

In the pre-war and early post-war days Yunnan Lane, which was located by the side of the post office, became a place where professional letter writers set up their stalls.

The pitched roof is finished with double layer Chinese clay tiles, with a single chimney stack and flue openings projects above the ridge.

Some other low-rise historic structures are found nearby, such as Yaumati Theatre and Yau Ma Tei Wholesale Fruit Market.

[1] The block next to the Engineer's Office features post-war tong-laus along Shanghai Street, which house the Hong Kong International Hobby and Toy Museum at No.

[6] In early 2000, the sole surviving building of former pumping station was slated for demolition in preparation for the 36-storey, twin-tower residential project, No.

At that time, the original identity of the building had been forgotten and it was simply referred to as "Red Brick House".

During the process of the study, two heritage specialists from The University of Hong Kong, Dr. Lee Ho Yin and Dr. Lynne DiStefano, raised questions about the original function of the anonymous Red Brick House.

This revitalisation project was endorsed by the Public Works Subcommittee of the Finance Committee of the Legislative Council at its meeting on 21 January 2009.