ATTMA Level 2 testing is the gold standard for verifying airtightness in large and complex Green Star NZ projects. This guide explains what it is, when it’s required, how it works, and why it’s essential for compliance — plus how to avoid the most common testing pitfalls.

Achieving sustainable building design requires a balance between embodied and operational carbon. Explore the key strategies for reducing carbon emissions throughout a building's lifecycle, from materials to energy efficiency.