Granny Flat Energy Compliance NSW 2026: BASIX Requirements for Secondary Dwellings TL;DR Every granny flat (secondary dwelling) built in NSW requires a BASIX certificate before a Development Application (DA) or Complying Development Certificate (CDC) can be approved. The BASIX certi... 7 star rating Air Tightness Approval Process BASIX CDC DA approval DCA development application Aug 10, 2026
BASIX MVHR & Air Tightness NSW 2026: Complete Guide to Ventilation and Thermal Performance BASIX MVHR Air Tightness NSW 2026: Complete Guide to Ventilation and Thermal Performance Quick Answer (40-60 words): BASIX requires mechanical ventilation with heat recovery (MVHR) for airtight homes ... Air Tightness BASIX MVHR Passive House Ventilation energy efficiency nathers-certificate Jul 7, 2026