Yes — a full structural engineering certificate is included with every Expandify home.

This certificate covers:

Wind rating and structural compliance (N2 standard, with upgrades available)

Steel frame integrity and load ratings

Subfloor and footing engineering (including adjustable stump design)

Roof, wall, and floor framing systems

You do not need to request this separately — it forms part of the standard documentation supplied with both DIY Kits and Complete Packages.