McLean's Mansion (originally Holly Lea) is a homestead in Christchurch, New Zealand. The two hectares property is situated between Manchester and Colombo Streets. The mansion was initially known as 'Holly Lea', but later became known as McLean's Mansion after its initial owner. It was the largest wooden residence in New Zealand. The mansion, designed by Robert England, architect of Christchurch, is a fusion of styles of Jacobean architecture and Victorian features, akin to the Mentmore Towers (1852–54) of Sir Joseph Paxton in Buckinghamshire in England. It was built between April 1899 and September 1900. The house is registered as a Category I heritage building by Heritage New Zealand. After the 2011 Christchurch earthquake, the owners applied to demolish the earthquake-damaged buildings,