By 1871 Burnside had grown significantly; it was now a mix of villages supporting a modest population of 1,557. By comparison, Kensington-Norwood, though smaller in area, had grown to 5,132 persons. Glen Osmond, still affected by its immense growth following the expansion of mining, was the largest single population centre with 343 residents. The District Council had also constructed its first council chambers in December 1869, finally concluding the haphazard meeting agreement. Two villages, Beulah Park (North Kensington) and Eastwood experienced booms in population growth and development between 1870 and 1880, providing both housing to new immigrants and investments for the wealthy Adelaide Establishment. Parkside Hospital (now Glenside), a mental health asylum was constructed in 1866 to replace a crowded building in the Parklands. Built on beautifully tended grounds and with an elaborate façade, it was an early Burnside architectural monument. In 1881 Thomas Cooper started brewing South Australia's first branded beer, 'Coopers', at Leabrook. During this era, Stonyfell saw economic expansion as well; its large quarry changed hands in 1867 and the Stonyfell Olive Co was founded in 1873. The late 19th century was a significant time of development in Burnside. This development, however, was brought to an abrupt end in the last decade, the 1890s, when depression stuck the economies of Australasia after decades of reckless expansion, hitting Burnside hard.