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 provides assurance that a house will be better quality - warmer, drier, healthier and cost less to run - than a typical new house built to building code. A 10 Homestar rating means you've built a world leading home.
Homestar assesses a house, apartment or multi unit development against several categories including energy, health and comfort; water, waste and materials. There are two stages to a Homestar rating:
Here's a longer introduction to Homestar for those wanting a bit more information: