Melbourne passive mansion lists with price guide up to A$12.65 million

Realtor.com reported on October 17, 2026, that a four-bedroom home known as Limestone House in Toorak, Melbourne, has hit the market for the first time. The property has a price guide of A$11.5 million to A$12.65 million, which equals approximately US$7.5 million to US$8.3 million. [1]

The home was completed in 2021 and relies on strict sustainability principles. Realtor.com reported that the property uses passive house principles, featuring an airtight and highly insulated envelope designed to reduce energy demand while keeping internal temperatures comfortable. [1]

A passive house standard is a voluntary building performance target that creates ultra-low energy structures with minimal heating and cooling requirements. The architectural approach integrates energy efficiency directly into the design to reduce the carbon footprint of a building. [3]

According to Realtor.com, Limestone House was one of the first residential builds in Australia to utilize the Living Building Challenge. That certification program and philosophy was created in 2006 to promote regenerative building practices. [1]