In the recent case of Davies v Moreland CC & Anor  VCAT 532 the Tribunal considered an application for an enforcement order to prevent the installation of a Smart Meter on a home within a Heritage Overlay.
The Tribunal dismissed the application on two grounds. The installation of a smart meter was routine maintenance which did not require a planning permit. Further the installation of the Smart Meter did not trigger a permit because it would not change the appearance of a heritage place.
The case provides a good analysis of the concept of "works" under the Planninng and Environment Act 1987.