NatHERS Assessors in Western Australia

Western Australia is the last Australian state to adopt the NCC 2022 energy efficiency provisions, with the transition taking effect from 1 May 2025. The state's vast geography encompasses an enormous range of climates, from the tropical north around Broome and the Kimberley to the temperate south around Albany and Bunbury. Perth, where the majority of the state's building activity occurs, sits in a Mediterranean-style climate with hot dry summers and mild wet winters. The Western Australian building industry is characterised by a strong preference for brick veneer and double brick construction, which influences how NatHERS assessments evaluate thermal performance. With the NCC 2022 transition now underway, demand for accredited NatHERS assessors in WA is increasing as builders adapt to the new 7-star minimum standard.

There are 0 accredited NatHERS assessors in Western Australia

NCC 2022 in Western Australia

Adopted 1 May 2025

Western Australia adopted the general provisions of the National Construction Code 2022 on 1 May 2023 but was the last state to implement the energy efficiency provisions, which commenced on 1 May 2025. This extended transition period, the longest of any Australian jurisdiction, reflected the WA building industry's request for additional preparation time. The delayed adoption means that WA has had the most time to observe how other states have managed the transition, and industry preparation has been extensive. From 1 May 2025, all new residential building applications in WA must meet the 7-star NatHERS minimum, Whole-of-Home energy budgets, and condensation management requirements. Projects lodged before this date under the previous standards can continue under NCC 2019 provisions until completion.

Local Programs & Regulations

Western Australia does not have a state-specific residential energy rating program equivalent to BASIX or Scorecard. The state relies on the NCC framework as its primary regulatory mechanism for residential energy efficiency. However, the WA Department of Mines, Industry Regulation and Safety has published specific guidance on applying NCC 2022 energy provisions in Western Australian conditions, including advice on managing the interaction between WA's predominantly brick construction and the new insulation requirements. Some local government areas in Perth have explored additional sustainability requirements through planning policy, though these have not been widely adopted. The Building Commission of Western Australia provides compliance resources and has been active in industry education programs ahead of the May 2025 transition date.

Climate Zones in Western Australia

Western Australia includes NatHERS climate zones 1, 3, 4, 5, 6, 13, and 15. Perth falls in zone 13, a warm temperate zone with hot dry summers, while Bunbury also sits in zone 13 with slightly more moderate conditions. Geraldton in zone 5 experiences hotter, drier conditions further north. The state's northern regions extend into tropical zones 1 and 3, though most residential construction is concentrated in the Perth metropolitan area and southwest. The hot summers in Perth, with extended periods above 35 degrees, make effective shading, roof insulation, and window performance critical elements that NatHERS assessments closely evaluate.

Find Assessors in Western Australia

As Western Australia has only recently transitioned to NCC 2022, it is essential to choose a NatHERS assessor who is fully across the new requirements. Look for assessors who have undertaken NCC 2022 training and can advise on the Whole-of-Home energy budget approach, which is new territory for many WA builders accustomed to the fabric-only assessment under previous standards. Perth has good assessor availability, but regional areas may need to rely on remote assessment services. Confirm that your assessor uses NatHERS-approved software and is accredited through a recognised body such as ABSA, HERA, or Design Matters National.

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