By 1963, with urban rural population growth and the expansion of council services, the Buninyong Shire Offices could no longer be accommodated in the Town Hall so new offices and a Council Chamber were constructed on the land between the Town Hall and the Fire Station.
A little over twenty years later, in 1988, the Shire had once again outgrown its premises and at considerable expense ($1,000,000) the existing offices were gutted and extended at the rear of the sixties building. A new entrance and foyer were constructed on the roadway which separated the Town Hall from the Offices. A reception area and toilet block, kitchen and staff rooms on this same road reserve then linked the enlarged offices to the Town Hall via the Court House which became the new Council Chamber. The old Judge's Room became the President's Room and the Clerks Office a committee room.
Over the years the Town Hall complex had deteriorated and during the conversion central heating was installed and the building repaired and redecorated using the original colour scheme and stencilling.
In 1994 the Buninyong Shire was amalgamated with the City of Ballarat and the offices, new toilets, kitchen and staff room were sold privately. The Reception area was retained jointly owned and was leased until 2007 to the Lions Club with services from the Town Hall.
In 1995 the Court House and associated rooms were leased to the Buninyong & District Historical Society.