Mount Gambier’s Roller Flour Mill, a 140-year-old landmark with a distinctive pink dolomite stone facade, was demolished on May 18, 2026, after planning assessors gave developers the green light for a multi-storey hotel complex. By Saturday afternoon, the heritage-listed facade was officially gone, clearing the site for a project set to include accommodation, retail and commercial spaces.

The demolition closed the book on one of Mount Gambier’s most recognisable industrial buildings and ended months of resistance from community groups that had argued the structure should be saved. Local residents mounted an 11th-hour petition to preserve the facade, but it came after assessors approved the loss of the mill for development linked to Mossop Construction.

The company had estimated that preserving the facade would cost $2.2 million, while describing the overall project as worth $118 million. That figure sharpened the argument over what the city should protect and what it should build, with the mill long described as an iconic part of Mount Gambier’s industrial heritage.

The fight over the flour mill has become part of a broader debate in regional Australia over heritage conservation and economic development. Supporters of retention saw the building as a rare survivor from the 19th century; backers of the project pointed to the scale of the planned hotel complex and the mix of uses proposed for the site.

What happens next is already clear: the demolished site will be prepared for construction of the multi-storey development. What is not settled is whether the loss of the mill’s pink stone facade will be remembered as a necessary trade-off for investment, or as the point at which Mount Gambier let an industrial landmark slip away.