Milton was built in 1888 from Australian Red Cedar, locally kilned brick from St Peters and Sydney Sandstone from Pyrmont. Western Australian Jarrah was used for the grand entryways, hallway floorings and service areas. Imported Italian Carrara White marble was used in the eight fireplaces. Milton was one of the finest mansions in all the inner west and at the time included a large land holding with horse stables.

In 1942 (primarily to accomodate soldiers and their families) Milton was formerly converted to a residential flat building with 11 flats. Milton today holds one 3 bedroom penthouse, two studios and eight 1 bedroom apartments as well as three off-street car spaces. Milton is spread across four levels — including an apartment with an attached wine cellar on the lower ground floor. Its soaring plaster ceilings, arched hallways, tessellated tiles and marble fireplaces are a testament to the craftsmanship of Sydney builders in the late 1800s and similar other significant building exist within the Petersham North Heritage Conservation Area.