The National Construction Code doesn't change overnight, but the 2024 update introduced a set of shifts that Adelaide builders and homeowners are still working through. If you're planning a build in 2026, here's what actually matters on the ground, without the industry-speak.
7-star energy rating is now the baseline. New homes have to meet a NatHERS 7-star performance rating (up from 6 stars). In practical terms that means better wall insulation, tighter glazing, better orientation of living zones, and often an additional layer of ceiling batts. Most volume builders adjusted their base specs early. If you're negotiating a fixed-price contract, ask specifically which glazing package and insulation thickness is in your base price rather than assuming the 7-star baseline is met by default.
Whole-of-home energy budget. On top of the fabric rating, there's a whole-of-home limit on annual energy use across heating, cooling, hot water, lighting and (if included) a pool pump. Builders now have to model your specific home rather than default to a generic report. This is why quotes now include line items for heat-pump hot water systems or solar-inverter allowances that weren't there two years ago.
Accessibility (Livable Housing) as standard. Step-free entries, wider corridors, and reinforced bathroom walls for future grab rails are now part of the base spec, not an add-on. If your builder quotes you for "livability upgrades" separately, push back — those items are baseline under NCC 2022 (which most councils enforce in 2024–2026).
Waterproofing tightened. Bathroom, laundry and balcony waterproofing standards got stricter. This is a good thing for you, but it does mean tiling can't start as early in the program as it used to. Expect an extra 3-5 days in the tiling sequence.
Condensation controls. New homes now need ventilation to manage condensation risk (especially in Adelaide Hills builds and coastal areas). That usually comes as a whirlybird or roof-space ventilation, or an exhaust-run duration on wet-area fans. Cheap to include, expensive to retrofit — check it's specified.
What this means for you when comparing quotes. The base price on a 2026 quote is genuinely including more than a 2022 quote at the same headline number, but that also means the "options list" for upgrades is smaller. Where builders used to compete on "we include double-glazing", it's now table stakes. Focus your comparison on facade quality, kitchen inclusions, tile allowances and the plaster-cornice finish — that's where real budget differences hide.
None of this is legal or contract advice — for anything binding, ask a licensed building surveyor or your consultant. But if you're deciding between two Adelaide builders in 2026, knowing what NCC baseline includes stops you paying twice for something that's already in the specification.
