The NatHERS Home Energy Rating Certificate for existing homes is designed to explain how an established dwelling performs, how energy is used and where targeted upgrades may improve comfort and efficiency.
Unlike a new-home NatHERS certificate, which supports proposed construction and compliance, an existing-home certificate reflects the assessed condition of a completed dwelling. It considers the building shell, installed systems, onsite energy features and practical improvement opportunities.
This makes the certificate useful for homeowners, buyers, advisers and program teams who need a clearer performance language for Australia’s existing housing stock.
