The Tsuen Wan MTR station and depot, at the end of the Tsuen Wan line from Central, involved extensive clearing of old factory sites and the excavation of almost 2,000,000 cubic metres of rock and debris.

Of primary concern to Dragages was the preservation of the Tin Hau Temple within the site boundaries. During the excavation process, great care was taken to design supports for the structure, while the surrounding water table was gradually lowered.