NatHERS existing homes assessments — mandatory disclosure, made clear

Selling or leasing an existing home is changing. Mandatory disclosure means your property’s energy performance must be transparently reported, giving buyers and renters confidence and helping owners identify smart upgrades. As a qualified existing homes NatHERS Existing Homes Assessor https://www.nathers.gov.au/Assessor-Register , 10 Star Building Assessments delivers clear, compliant ratings with practical improvement pathways.


What mandatory disclosure means for existing dwellings

  • Scope: Mandatory disclosure requires a recognized energy performance rating to be provided when a dwelling is put up for sale or lease.
  • Purpose: It gives a consistent, trusted benchmark of thermal comfort and energy use, making properties more comparable and highlighting opportunities for improvement.
  • Benefits:
  • Market confidence: Transparent ratings support fair valuation and informed decisions.
  • Cost savings: Targeted upgrades reduce bills and improve comfort year-round.
  • Future-ready: Aligns your property with national energy standards and sustainability goals.
  • Outcome: A NatHERS rating for the dwelling’s thermal shell plus a Whole of Home rating that reflects key household energy systems.

Why Choose 10 Star Building Assessments?

When it comes to energy ratings for existing homes, not all assessors are the same. Here’s why we stand out:

  • Real expertise you can trust
    We understand how homes are built and how they perform in different climates. That means our ratings aren’t just numbers — they reflect how your home really works day to day.
  • Clear and simple reports
    No jargon, no confusion. We provide easytoread summaries that you can hand straight to your agent, buyer, or strata manager. Everyone gets the information they need without the technical overload.
  • Practical upgrade advice
    We don’t just point out problems — we show you the smartest improvements to make first. Our recommendations focus on comfort, cost savings, and the best return on investment.
  • Trusted by owners and professionals
    Our documentation is complianceready for regulators, but also tailored for everyday homeowners. Whether you’re selling, leasing, or planning renovations, our reports give confidence and clarity.

What’s assessed:  Dwelling (thermal) rating

The dwelling rating evaluates the building’s fabric and how it responds to climate. We assess:

Thermal  Rating

What’s assessed: Whole of Home rating

Whole of Home reflects the energy efficiency of major household systems and on-site generation:

Home Rating

What you receive

  • NatHERS dwelling star rating: A Nationally recognised, climate-specific thermal performance rating out of 10 Stars.
  • Whole of Home rating: A holistic view of your household energy systems and generation.
  • Clear, practical advice
    No technical jargon. We explain what’s working well and what could be improved, with straightforward suggestions that improves the star rating and can reduce energy use.
  • NatHERS Certificate: A nation wide house energy rating certificate that can be provided to you preferred real estate agent prior to sale or rent.

Our assessment process

Assessment process diagram with circular steps on a green background.

Book your assessment

  • Get started: Send your address, recent plans (if available), and any renovation details.
  • Turnaround: Typical delivery times are confirmed at booking, with expedited options on request.
  • Contact: Use the booking form on www.10sba.com or email for a tailored quote.

Ready to raise your home’s comfort, cut energy costs, and market with confidence? Book your NatHERS Existing Homes Assessment today.

Accreditation card for Adam Clarke, an assessor for existing homes, with photo and accreditation number.

Get expert recommendations to improve the energy efficiency of your building.