The Malahat Building / Old Victoria Custom House is a three-storey, mansard-roofed, brick building, built in 1874-5. It is located on a waterfront site, overlooking the harbour of the city of Victoria, British Columbia. It was designated a national historic site in 1987 because: it is closely associated with Victoria when the city was the pre-eminent commercial centre on Canada's Pacific Coast; and it is a rare surviving example of a 19th-century Second Empire style federal building.