How much does a NatHERS assessment or energy certificate cost in 2025? Tell us about your home — we'll give you a realistic price range in seconds.
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Five factors drive most of the variation in NatHERS quotes.
Digital CAD plans (DWG/PDF) speed up modelling. Hand-drawn or missing plans add 1–3 hours of work.
Multi-storey, irregular shapes, mixed glazing systems and split levels all increase modelling time.
New-build certificates cost more than existing-home assessments because they're regulated and stamped for council.
Regional and remote properties attract a travel surcharge. Capital cities are usually cheapest.
BASIX (NSW), Scorecard (VIC) and Whole-of-Home reports often bundle for a small extra fee.
Standard turnaround is 5–10 business days. Express (24–48 hr) typically adds 30–50%.
National 2025 averages — your local quote may vary.
| Project | Apartment | Townhouse | House |
|---|---|---|---|
| New build (NatHERS Certificate) | $350–$600 | $450–$750 | $400–$1,500 |
| Renovation / extension | $300–$550 | $400–$700 | $450–$950 |
| Existing home (voluntary) | $250–$450 | $300–$550 | $350–$750 |
A NatHERS assessment typically costs between $300 and $1,500 in Australia, depending on dwelling type, size, location and whether it is for a new build (which requires a full certificate for council approval) or an existing home. Apartments and small homes sit at the lower end; large new houses sit at the top.
For new builds requiring a NatHERS Certificate under NCC 2022 (7-star minimum), expect $400–$1,500 depending on size and complexity. Multi-storey or architecturally complex homes cost more because they take longer to model.
An existing-home NatHERS assessment or Victorian Scorecard rating typically costs $250–$750. This is voluntary in most states but valuable for selling, upgrading, or qualifying for rebates.
Price varies based on plans availability (digital plans speed up modelling), site visits required, dwelling complexity, state-based travel costs, and whether you need just a NatHERS Certificate or also a BASIX (NSW) or Scorecard (VIC) report.
Yes — the Victorian Residential Efficiency Scorecard is often subsidised under state programs and can cost as little as $0–$200. NatHERS Existing Homes assessments are the next tier up. DIY tools like our calculator give a free indicative rating before committing to an accredited assessment.