Built in 1914, the Dr Sun Yat-sen Museum is located in the Kom Tong Hall, originally the residence of Ho Kom-tong, the younger brother of the Hong Kong's magnate Robert Hotung. Being a typical Edwardian Classical building, this four-storey building has the facade surrounded by the Greek-style granite columns. Inside the premises are preserved the stained-glass windows, balcony wall tiles and staircase railings in good condition. The Kom Tong Hall is among the best-preserved buildings dating back to the early 20th century Hong Kong.

Apart from its majestic appearance, Kom Tong Hall was among the earliest residential buildings constructed with reinforced concrete structure and fitted with concealed electrical wiring in Hong Kong. It sets an important milestone in the development of building construction.