Homestar is a comprehensive, independent national rating tool, run by the not-for-profit Green Building Council, that measures the health, warmth and efficiency of New Zealand houses. A home is rated on a scale from 6 to 10.
A 6 Homestar rating or higher means the home will be easier and more cost effective to keep warm, healthy and more environmentally friendly than a typical new house built to building code. A 10 Homestar rating means you've built a world leading home.
To rate a home’s performance and environmental impact, Homestar awards points across several categories: density & resource efficiency; energy, health & comfort; water; waste; materials; site; home management; and an optional innovation category.
There are two stages to a Homestar rating: