He died in 1860, leaving his family penniless. John Frederick McDougall, a member of the first Queensland Legislative Council, farmed the Milton Estate, adding large western suburbs leaseholds to his holding, and enlarging the house considerably. From 1864 the McDougalls resided at Rosalie Station and let Milton. Tenants included Arthur Manning, the Colonial Under-Secretary; Henry Walsh, MLC and speaker of the Legislative Assembly; and James Crombie. The house gave its name to the local suburb, while neighbouring Rosalie took its name from McDougall's Darling Downs property, bearing testament to the one time extent of his holdings in the western suburbs. Milton Farm was sold to the Queensland Investment and Land Mortgage Co. Ltd in 1885 and subdivided for residential development, at which time the newly created streets of McDougall, Manning, Walsh and Crombie were named after previous owners or occupiers of Milton House. The Commissioner of Police, David Thompson Seymour, bought an area of nearly two acres, including the house, in 1887, but sold it the next year to Dr Hugh Bell, a noted physician and consultant at the Brisbane General Hospital for forty years. In 1904 the property was purchased by grain merchant William Siemon and his family, who renovated the premises in 1922. In 1955 the Siemon family gave the property to the Presbyterian Church, which used Milton House as a hostel for women college students until 1983. The building subsequently became part of the Kings Row Corporate Park development, at which time it was refurbished to resemble its outward appearance of the 1860s. The hip-roofed house is Colonial Georgian in style and plan, having a typical front doorway with segmented sidelights and an arched fanlight, and a symmetrical arrangement of rooms about a central hallway on each floor. The ground floor has wide, open verandahs on three sides. Two service rooms run across the rear of the core, incorporating pavilion wings of the side verandahs. The walls are of brick, which is lime rendered and jointed to give the impression of stone. A three-roomed cellar is constructed of rough rubble walling, and entered by steps on the south side of the verandah. The roof shingles have been replaced with corrugated iron. Internally, the narrow cedar staircase has shaped handrails and stick-balusters (replacements), the vestibule features an ornate plaster ceiling, and the dining room has an early 20th century pressed metal ceiling.