The Cotality report found that the value uplift from solar systems varies by region. Regional Northern Territory recorded the highest percentage increase at 6.9%, or about $31,350. In terms of dollar value, the premium ranged from $14,093 in Adelaide to $30,459 in Hobart, reflecting differing levels of buyer interest in energy-saving features.
“Our findings highlight that homes with energy and efficiency upgrades are delivering not only long-term energy bill savings and comfort, but also measurable price premiums at a time when cost-of-living concerns are top of mind for Australians,” said Tom Coad (pictured right), senior director, banking and finance at Cotality.
The report also assessed the impact of a property’s estimated energy efficiency rating, a factor not traditionally included in valuation models. Using Cotality’s Energy Efficiency Portfolio Analytics, the study found that each additional estimated NatHERS star rating corresponded to a median national value increase of 1.3%, or about $10,560. The uplift per star ranged from $3,749 in Brisbane to $32,946 in Darwin.
With nearly 70% of Australian homes rated below four stars, the report suggests significant potential for upgrades and highlights risks for owners and investors of lower-performing properties.