What will an Energy-audit cost
This can vary from a site visit and talk to a full energy audit modeling the house with the BRANZ ALF software.
Prices vary from $100 to $350 plus GST.
Most houses audited can save $300 per year without expensive improvements made.
What will a HERS rating cost
These are made to a strict procedure with expensive software and compliance overheads.
The can vary depending on house size and complexity from $400 to $550 plus GST off good construction plans. And from $550 to $700 plus GST if plans are not available and a site visit and measure are required.
House ratings at time of design or alteration can future proof your house and ensure you make the right choice before purchasing expensive materials or equipment. Star ratings can increase, with construction costs falling when Accurate is used at an early stage of design.