What Is 10-Star?

A 10-star home is the highest star rating under Australia’s Nationwide House Energy Rating Scheme (NatHERS). It refers to a home’s energy efficiency level, measured by how well it maintains comfortable indoor temperatures without heavy reliance on mechanical heating or cooling. This top energy rating goes beyond minimum energy efficiency standards, helping lower energy consumption, reduce running costs, and decrease operational carbon emissions.

What Is a 10-Star Home?

A 10-star home achieves a perfect score under NatHERS. It requires almost no artificial heating or cooling, staying comfortable year-round. This rating indicates smart materials, systems and construction, strategic layout, and efficient use of resources:

Minimal reliance on mechanical heating or cooling: This eliminates the need for constant air conditioning or extra appliances to maintain comfort.
Lower energy bills: Energy-efficient design significantly reduces overall energy consumption.
Stable indoor climate: Improved air-tightness and thermal performance minimises draughts and maintains consistent room temperatures.
Future-proof compliance: As energy efficiency standards evolve, a 10-star home remains compliant and ready for future requirements.

Why Is a 10-Star Home Important?

The built environment accounts for a large share of Australia’s emissions. By embracing 10-star energy homes, we:
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Cut Energy Costs

Less reliance on heating/cooling and appliances means a smaller energy bill and less waste.

Boost Comfort

Passive solar design increases thermal comfort, keeping living spaces pleasant year-round.

Improve Health

Combining ventilation with better air-tightness and natural light reduces mould and allergens.

Protect the Environment

Less energy consumption lowers greenhouse gas output.

Stay Future-Proof

Design is more durable, and meets rising energy efficiency and rating system standards, ensuring compliance for decades.

How Does a Home Achieve a 10-Star Rating?

Designing a 10-star home depends on materials and construction choices and passive design steps:

Orientation & Solar Access

Position the house to use prevailing winds, maximise winter sun and minimise summer heat.

High-Performance Insulation

Exceed basic construction code insulation requirements to keep heat in during winter and out in summer.

Airtight Construction

Wrap and seal gaps to reduce unwanted air movement. Consult with an expert first for design advice and testing.

Thermal Mass

Use materials like concrete or brick to stabilise internal temperatures.

Double/Triple Glazing

Improve air-tightness, thermal comfort and reduce external noise.

Natural Ventilation & Shading

Rely on breezes, eaves, and blinds instead of constant mechanical cooling or heating.

Energy-Efficient Appliances & Lighting

Opt for systems with a strong energy rating label to save power.

Renewable Energy Integration

Solar-powered electricity systems can create a 10-star energy setup with minimal carbon footprint.

10-Star Homes vs. Standard Homes

NatHERS rates homes from 0 to 10 stars:
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0 Stars

No climate control advantages; heavy reliance on appliances.

6-7 Stars (Typical new buildings requirement)

Meets minimum energy efficiency for moderate comfort.

10 Stars

Maintains comfort with almost no mechanical heating or cooling, lowering estimated annual running cost.

The Future of 10-Star Homes

As Australian regulations push for higher energy performance, many architects and builders are adopting 7- or sometimes 8-star standards. But 10-star designs represent the next level. They use much less energy, sharply reduce emissions, and meet strict energy efficiency targets. This trend aligns with national goals to create a comfortable, resilient and sustainable housing market.

Thinking of Building a 10-Star Home?

Whether planning for a new house or upgrading an existing one, a 10-star design helps you:
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Optimise Energy Use

Save money with fewer systems and appliances running.

Improve Comfort

Enjoy more stable indoor temperatures in any climate zone.

Meet Future Standards

Comply with evolving national construction code rules and beyond.

At SUHO, we specialise in 10-star consulting and NatHERSs accredited solutions. We guide a home’s energy performance improvements from design to completion, ensuring the property uses less energy and meets top-tier star standards.

Interested in a 10-star rated home?

Contact us today to explore how to keep your home comfortable, efficient, and ready for tomorrow.

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