Answer:
Wind classification determines the structural requirements for your Expandify home based on how exposed your site is to wind loads. It directly influences the engineering, fixings, tie-downs, and materials used.

Wind classifications in Australia include:

• N1 / N2 (standard suburban) – suitable for most metro properties
• N3 / N4 (coastal or elevated areas) – requires structural upgrades
• C1–C4 (cyclone regions) – not standard; requires major redesign

Why it matters:

• Affects wall bracing, roof framing, anchoring, and cladding
• Impacts whether additional certification or materials are needed
• Determines long-term performance and safety in extreme weather

The wind classification report is required before your engineering documentation can be finalised. Expandify arranges this as part of your report pack after site checks are complete.