Is There a Cost Premium for Passivhaus? What You Need to Know
September 2021
This article was originally published in 2021 and last updated in October 2026 to reflect current Passivhaus projects, costs, and industry data.
Cost is one of the most common concerns clients raise when considering Passivhaus. While Passivhaus is often associated with a significant cost premium, the additional cost varies from project to project. When performance is considered early in the design process, some projects may have only a small additional cost, while others may achieve cost neutrality or even savings.
If you’re considering a project, learn more about our approach as a Passivhaus architect in Melbourne.
In this article, we explain typical Passivhaus costs in Melbourne and Victoria, including premiums, potential savings, retrofit considerations and the key factors that influence overall project budgets.
What is the typical Passivhaus premium in Melbourne?
In Melbourne and regional Victoria, the cost premium for Passivhaus varies significantly depending on project type, form factor, the amount of glazing, builder experience and site constraints.
- Some projects see a modest premium when performance is integrated early.
- Higher-budget homes may approach cost neutrality.
- Tight-budget projects or complex retrofits are more likely to experience a premium.
- Every project is unique and must be assessed on a case-by-case basis.
Is there a premium to go Passivhaus?
People are often drawn to Passivhaus because of the comfort, energy efficiency and long-term performance it offers. However, the potential additional cost of achieving the Passivhaus standard is understandably an important consideration.
In practice, the cost premium can vary considerably from project to project.
On one of our projects, the client asked: what is the cost premium of taking the project to the Passivhaus standard? In consultation with the builder, we estimated the additional cost at approximately 2.5 per cent of the Cost of Works.
It is important to note that, in this case, the existing portion of the house was not being upgraded to the Passivhaus standard, so the 2.5 per cent figure should not be taken as representative of all Passivhaus projects. Even so, it illustrates that the premium can be relatively modest when Passivhaus principles are integrated thoughtfully and early in the design process.
Our broader experience is that the additional cost of achieving Passivhaus varies depending on the project’s budget, scale and design approach.
International and Australian context
The International Passive House Association guidance indicates that, in Germany, the additional upfront cost of building to the Passivhaus standard is typically around 3–8 per cent. As Passivhaus components become more widely available, the additional costs may reduce.
Australia remains an emerging market for Passivhaus, but uptake is growing rapidly. Local cost outcomes vary significantly depending on climate, builder experience, and project complexity. While examples of cost-neutral outcomes exist, they are not universal and should not be assumed.
Our Fitzroy retrofit project, which was certified to the Passivhaus Plus standard, started with a Master Plan.
Melbourne & Victoria Passivhaus cost premium
In Melbourne and across Victoria, there is often a cost premium associated with achieving the Passivhaus standard. However, with careful design and early consideration of Passivhaus requirements, this premium can be modest. In some projects, design efficiencies, such as a simpler building form and smaller heating and cooling systems, may offset the additional cost.
Victoria cost savings
Two Victorian homes provide interesting examples of potential cost savings. Both had been fully designed, documented and costed by a builder before the decision was made to take them to the Passivhaus standard. The revised builder pricing showed construction cost savings of approximately 7 per cent and 15 per cent, with the overall designs unchanged. These savings resulted from a combination of factors.
These were relatively large homes, measuring approximately 240 m² and 360 m². A smaller home with a tighter budget would not necessarily achieve similar savings. You can read more about these two projects here.
Low budgets
If you are starting with a tight budget, the additional cost of achieving the Passivhaus standard can be a significant consideration. Square metre rates vary depending on site conditions, project complexity, finishes and market conditions, so they should be treated as indicative only.
One of our Passivhaus new-build projects currently under construction has construction costs of approximately $6,000 per square metre, based on 2025 rates and excluding the garage. The home has a good form factor but is relatively small and is being built on a sloping site, both of which contribute to a higher square-metre rate.
This is a project-specific example rather than a benchmark for Passivhaus construction. Each project needs to be assessed against its own scope, site and budget.
General cost considerations for Passivhaus in Victoria
When considering a Passivhaus project in Victoria, some general cost considerations include:
- For entry-level budgets, the Passivhaus premium may be proportionally higher.
- For higher-budget projects, the premium may be proportionally lower or, in some cases, offset by design efficiencies.
- Cooler regions may require higher levels of insulation and higher-performing glazing.
- Higher-altitude sites may increase construction costs.
Cost premium & smart design
In some Australian projects, reported premiums have been low where Passivhaus performance was integrated early and design efficiency was prioritised. However, outcomes vary considerably depending on the site, scale, complexity and design of each project.
Smart design & cost reduction strategies
Careful design can help minimise the cost premium associated with Passivhaus and, in some cases, may result in cost neutrality or an overall saving. Some strategies include:
- A site with good northern orientation and minimal overshadowing from neighbouring buildings or vegetation.
- A favourable ‘form factor’, which you can learn more about here.
- Avoiding unnecessary thermal mass, such as additional concrete included solely for heat storage, where it adds cost without a worthwhile performance benefit.
- Carefully managing glazing ratios and window specification to balance daylight, solar gain, cost, and performance.
- Reviewing the brief to reduce the overall building area, for example by using built-in robes instead of walk-in robes, a study nook instead of a separate study, or a second living area that doubles as a guest room.
This is why early planning, often beginning with a Master Plan or Feasibility Study, is important in aligning performance targets, budget and scope before detailed design begins.
Other factors affecting costs
As with any building project, a range of other factors can influence construction costs, including:
- Site location
- Site access
- Soil classification
- Slope of land and terrain
- Bushfire Attack Level (BAL), if applicable
- Building on or close to boundaries
- Demolition
- Project size
- Construction type
- Number of bathrooms and other wet areas
- Parking
- Selection of materials and finishes
- Septic system, if required
- Market conditions
Passivhaus software & cost savings
The Passive House Planning Package (PHPP) is a detailed performance modelling tool that has been shown to provide reliable predictions of a building’s energy performance in practice.
One benefit of PHPP is that its detailed modelling can help avoid the over-specification of building components and systems. For example, where a split-system air conditioner is required, PHPP can be used to calculate the heating and cooling loads, allowing the system to be appropriately sized rather than oversized.
Life cycle costs
When building a Passivhaus, whole-of-life costs should also be considered. Passivhaus buildings can reduce heating and cooling energy use by up to 90 per cent compared with typical building stock, significantly reducing ongoing energy costs. Maintenance and the eventual replacement of building components and systems should also be included when assessing whole-of-life costs. Some lenders now recognise energy-efficient homes within green loan frameworks, although terms and eligibility vary.
EnerPHit retrofit costs
The cost premium for an EnerPHit retrofit depends on the existing building, its construction and the extent of work required to achieve the EnerPHit standard. Each project needs to be assessed on a case-by-case basis.
Managing costs
When considering a Passivhaus new build, alteration or addition, or an EnerPHit retrofit, it is important to understand the overall project budget. This should include the Cost of Works, architect/designer and specialist consultants’ fees, as well as other project costs such as landscaping, loose furniture, bank fees and relocation costs.
It is also important that your budget is appropriate for your brief and, if necessary, that either the budget or brief, or both, are adjusted. As the design develops, construction cost estimates should be obtained and regularly updated to help keep the project aligned with the available budget.
Conclusion
As with all projects, it is important to understand the likely costs before proceeding with the project’s design and documentation stage. This is particularly important for Passivhaus or EnerPHit projects in Melbourne, where the cost implications need to be understood on a project-by-project basis.
We love talking about Passivhaus. If you’re considering building a Passivhaus home or undertaking an EnerPHit retrofit, start a conversation with us.