NatHERS Assessor — Find a Verified Assessor Near You
A NatHERS assessor issues the 0–10 star energy rating certificate your builder, surveyor, or council needs for NCC 2022 sign-off. Every assessor in our directory is verified against the national register.
Verified
Cross-checked against the NatHERS national register.
From $300
New builds $300–$1,500 depending on design complexity.
5–10 days
Standard turnaround once plans are provided.
Every state
Local assessors in NSW, VIC, QLD, SA, WA, TAS, ACT & NT.
What a NatHERS assessor actually does
A NatHERS assessor takes your architectural plans, elevations, and construction specifications and rebuilds them as a digital thermal model in one of the three CSIRO-accredited software tools: AccuRate Sustainability, FirstRate5, or BERS Pro. The software simulates a full year of heating and cooling loads for your specific postcode using 30-year climate data.
The output is a NatHERS certificate showing your home's star rating out of 10 — where 7 stars is the NCC 2022 minimum for new houses in almost every state. If the design doesn't hit 7 stars on the first pass, the assessor identifies which walls, windows, or roof elements need to change and re-runs the model until compliance is reached.
Only an accredited NatHERS assessor can lodge the certificate. Building surveyors, private certifiers, and councils will reject star ratings produced by anyone else — the certificate must carry an assessor ID that resolves against the national register.
When you need a NatHERS assessor
- New home builds — every new dwelling in NSW, VIC, QLD, SA, WA, TAS, ACT & NT needs a NatHERS certificate to satisfy NCC 2022 Part H6 (7 stars minimum).
- Major renovations & additions — extensions that add conditioned floor area or alter the building envelope trigger NatHERS in most jurisdictions.
- Selling a home in the ACT — mandatory energy efficiency rating disclosure at point of sale requires an EER (NatHERS-based) certificate.
- Selling a home in NSW after 2027 — the proposed Home Energy Ratings Scheme will require a NatHERS or Scorecard rating at listing.
- State rebate applications — VIC Home Heating & Cooling Upgrades, NSW HESP, and QLD Battery Booster often reference NatHERS star ratings.
Find a NatHERS assessor in your state
How to choose the right NatHERS assessor
- Check the register. Ask for their NatHERS accreditation number — it should resolve on nathers.gov.au or via their AAO (DMN or ABSA).
- Match the scope. A new-build custom home needs an assessor comfortable with FirstRate5 or AccuRate; existing-home audits often use different modelling approaches.
- Ask about revision policy. Most designs don't hit target star rating first try. Confirm whether one or two design iterations are included in the quoted price.
- Compare 3 quotes. Pricing for identical plans can vary $200–$400 between assessors in the same city. Our quote request form collects three in one shot.
- Read reviews. Google reviews on directory listings reveal turnaround reliability and communication quality — the two things pricing sheets don't show.
Ready to find a NatHERS assessor?
Browse verified assessors near you or send one form and get quotes back from three local accredited assessors within 24 hours.