Home Energy Rating Cost in 2026: NatHERS Prices by State

Typical Cost Range by Home Size (2026)

The cost of a NatHERS home energy rating, energy rating report or energy efficiency report in Australia typically ranges from:

Average cost in 2026: Most Australian homeowners pay between $350 and $550 for a residential NatHERS assessment, with the median sitting around $420.

What Affects the Cost?

Several factors influence the price of your energy rating:

• Home size: Larger homes require more analysis and take longer
• Design complexity: Unique features, multiple levels, or irregular shapes increase time
• Location: Urban vs. regional areas affect assessor availability and travel costs
• Building type: New construction vs. existing home assessments
• Urgency: Rush services may incur additional fees
• Additional services: Design advice or multiple rating scenarios

Cost by State

Average NatHERS assessment costs (2026) vary slightly across Australia. Click your state to find local assessors:

• NSW: $350 – $600
• VIC: $300 – $550
• QLD: $300 – $500
• SA: $320 – $550
• WA: $350 – $600
• TAS: $320 – $550
• ACT: $350 – $600
• NT: $350 – $650

Looking for assessors in a specific city? Try Sydney, Melbourne, or Perth.

*Prices reviewed April 2026. Indicative only — actual quotes vary based on assessor rates and project specifics.

What's Included

Your assessment fee typically covers:

• Analysis of building plans and specifications
• Thermal performance modeling using NatHERS software
• Official NatHERS certificate with star rating
• Certificate registration in the national database
• Assessment report and documentation
• Basic recommendations for improvements
• Assessor's professional consultation time

Return on Investment

While there's an upfront cost, a higher energy rating can save you money:

• Lower energy bills: Each additional star can reduce heating/cooling costs by 10-15%
• Increased property value: Energy-efficient homes command premium prices
• Faster sales: Buyers actively seek energy-efficient homes
• Government rebates: Access to various energy efficiency incentive programs
• Better comfort: More consistent temperatures year-round

A typical 7-star home can save $500-$1,500+ annually compared to a 5-star home, meaning your assessment cost can be recovered quickly.

Tips to Save Money

• Find assessors in your area and compare their services
• Book during less busy periods (avoid peak building season)
• Have all plans and specifications ready in advance
• Engage an assessor early in the design phase to avoid costly changes
• Bundle services if getting multiple ratings (e.g., variations)
• Check if your builder includes the rating in their package
• Use our free calculator to understand your rating before booking

NatHERS Certificate Cost: What You'll Actually Pay

The cost of a NatHERS certificate — the official document showing your home's star rating — is included in the assessment fee. There is no separate certificate fee. When you engage a NatHERS accredited assessor, the price covers:

• The on-site inspection or plan analysis
• Thermal modelling using NatHERS-accredited software (e.g., FirstRate5, BERS Pro)
• Your official NatHERS certificate with your 0–10 star rating
• Registration of the certificate in the national NatHERS database
• A written report with energy efficiency recommendations

For existing homes, expect to pay $300–$600 for your NatHERS certificate. New builds typically cost $150–$400 as assessors work from plans rather than conducting a physical inspection.

Energy Efficiency Report Cost by State

Energy efficiency report costs vary by state due to differences in climate complexity, assessor availability, and state-specific requirements. Here's what you can expect:

*Prices are indicative for a standard 3–4 bedroom home. Complex properties, multi-storey homes, or rush services may cost more. Find assessors near you to get accurate quotes.

NatHERS Assessment Cost in NSW

In New South Wales, a NatHERS assessment costs $350–$600 for existing homes and $200–$400 for new builds. Sydney metro assessors tend to charge at the higher end due to demand, while regional NSW (Newcastle, Wollongong, Central Coast) is often $50–$100 less.

NSW also requires a BASIX certificate for new residential developments, which is a separate regulatory requirement from a NatHERS assessment. Some assessors offer combined BASIX + NatHERS packages at a reduced rate.

With NSW moving toward mandatory energy disclosure for home sales, getting a NatHERS assessment now positions you ahead of the market. Find NSW assessors →

NatHERS Assessment Cost in Queensland

Queensland NatHERS assessments cost $300–$500 for existing homes and $180–$350 for new builds. Brisbane and Gold Coast assessors are competitively priced, while Far North Queensland (Townsville, Cairns) may be slightly higher due to fewer assessors.

QLD's tropical and subtropical climate zones mean assessors focus heavily on cooling performance and condensation management under QDC 4.1. Homes in climate zones 1–3 (tropical north) often require more detailed modelling, which can increase costs slightly.

Find Queensland assessors →

NatHERS Assessment Cost in Victoria

Victorian NatHERS assessments cost $300–$550 for existing homes and $180–$380 for new builds. Melbourne (climate zone 60) is the most competitive market in Australia for assessor pricing.

With the Victorian Scorecard program closing 23 June 2026 and transitioning to NatHERS, demand for assessors is increasing. The Victorian Energy Upgrades (VEU) program may help offset assessment costs through rebates on energy-efficient upgrades recommended in your report.

Find Victorian assessors →

SA, WA, TAS, ACT & NT: What You'll Pay in 2026

Hidden Costs to Watch For in 2026

The headline assessor fee isn't always the final bill. Five extras catch homeowners out:

• Re-rating fee ($100–$250): If you change windows, insulation or floor plan after the first model, you'll pay to re-run the simulation.
• Travel surcharge ($50–$200): Common outside metro areas — always ask if it's included in the quote.
• BASIX certificate (NSW only, $80–$200): A separate document required for new builds and major renos. Often bundled with NatHERS.
• Plans markup ($150–$400): If you only have hand-drawn plans or photos, the assessor may charge to redraw them in CAD before modelling.
• Rush turnaround (+30–50%): Need a certificate in 48 hours? Expect a premium — book 1–2 weeks ahead instead.

7 Questions to Ask Before You Book

A 5-minute phone call protects you from surprise fees and underqualified assessors. Ask every assessor you contact:

1. Are you currently NatHERS-accredited, and through which AAO (Design Matters, ABSA, or HIA)?
2. Is the certificate registration fee included, or charged separately?
3. Are travel costs included for my postcode?
4. How many re-rating iterations are included if I tweak the design?
5. What's your typical turnaround time from inspection to certificate?
6. Do you also handle the BASIX certificate (NSW), or do I need a second specialist?
7. Can I see a sample certificate and report from a similar home?

When Does the Assessment Pay for Itself?

Most homeowners recover the $300–$600 assessment cost within the first year of acting on the recommendations. A typical example for a Melbourne 4-star home upgrading to 6 stars:

Source: AEMO residential energy data, ASBEC 2024 retrofit cost benchmarks. Your numbers will vary based on climate zone, electricity tariff and starting rating — try the free savings calculator for a personalised estimate.