Homestar is designed to be an independent rating tool for assessing the health, efficiency, and sustainability of homes across Aotearoa.

Since launching Homestar in 2010, we continue to work with experts and organisations across industry and government to ensure it supports New Zealanders in the design, construction and liveability of resilient homes for the long term.

Homestar is a holistic tool to rate a home’s performance and environmental impact. A 10 Homestar rating recognises world leading standards for design, construction and efficiency in operation. A 6 Homestar rating recognises a home that has been built above the current standards set by the New Zealand building code.

Get involved. Find an assessor, or contact the Homestar team at the NZGBC.

Homestar v5

The latest version of Homestar, Homestar v5, offers a new operational energy and carbon modelling tool with targets aligned to MBIE’s Building for Climate Change framework. Combined with updated requirements to ensure a healthy, comfortable indoor environment and, for the first time also accounting for embodied carbon, achieving a minimum 6 Homestar rating under version 5 will be a significant statement of industry leadership for those choosing to be ahead of the building code.

The transition period between Homestar v4.1 and Homestar v5 will end on 31 January 2023.

From 1 February 2023 all new general Homestar registrations will be for Homestar v5.

Key dates:

  1. Homestar v4.1 project registration forms must be received (via email) by 5 pm on 31 January 2023.
  2. NZGBC must receive the registration fee for the project within 30 days of the invoice being issued, and no later than 31 March 2023, after which date unpaid projects may be cancelled.
  3. If the registration process has not been completed by 31 March 2023, the applicant can withdraw the registration or convert the registration to Homestar v5.

Find out more about the benefits of Homestar and the rating you can achieve for your home.

Why Homestar


Homestar case studies

Certification process and fees

Homestar builder and designer directory

Homestar Assessor directory

Technical resources

Resources for Trainees

Resources for Practitioners

Resources for Assessors

Homestar courses