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We provide independent and trusted building research, testing and quality assurance to support better buildings.
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Affordability
Housing is affordable for people to build, maintain and live in.
Resilience
Buildings protect people from earthquakes, fire, extreme weather and climate change.
Sustainability
Buildings are environmentally designed, built, maintained and recycled.
Quality
Buildings are safe, warm, dry and fit for future generations
News
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On-site waste sorting signage
Download our REBRI On-site Waste Sorting Signage Kit, a practical resource to help your team reduce construction waste.
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Future of work survey - 2025
We’re working to make it easier for the construction industry to make smart, zero-carbon decisions.
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Where the wind never sleeps: Extreme corrosion on the Chatham Islands
BRANZ research reveals corrosion on the Chatham Islands occurs up to 22 times faster than on mainland New Zealand.
Find out more
Featured publications

Print version available now!
This guide explains the general principles of the plumbing codes and standards for sanitary plumbing in Aotearoa New Zealand. Issues such as backflow prevention, protection from scalding and explosion by hot water installations and the use of air admittance valves are explained in clear and simple text. This edition was updated and released in April 2024 to reflect recent changes to AS/NZS 3500 Plumbing and drainage standards and amendments to the New Zealand Building Code acceptable solutions for clauses G12 Water supplies and G13 Foul water.