Key takeaways:
Building costs vary by project. Location, labour, materials, site conditions and home design all affect the final price.
Construction loans are paid in stages. Interest is generally charged only on the funds drawn down during the build.
Your building approach matters. Building, renovating, rebuilding or buying a house-and-land package each comes with different costs.
Location affects construction costs. Labour availability, transport and local conditions influence building costs across Australia.
Budget beyond the build. Include site preparation, permits, utility connections, landscaping, insurance and contingency costs.
How much does it cost to build a house in Australia? The answer depends on several factors, including where you build, the size and design of your home, site conditions, construction materials, labour costs and local council requirements.
In recent years, building costs have changed significantly, making it crucial to understand the full cost of building before choosing a builder or applying for finance. Beyond building costs, you'll also need to budget for expenses such as site preparation, permits, utility connections and financing costs.
Whether you're a first-home buyer, upgrader or investor and are considering a house-and-land package or building a home, understanding these costs can help you budget more accurately and avoid the likelihood of unexpected costs.
This guide explains the average cost to build a house in Australia, the factors that influence construction costs, the additional expenses to plan for and how construction loans work, so you can make informed decisions before starting your build.
Key costs to consider when building a home
Building a home involves several costs beyond the build itself. Here’s a breakdown of the key costs:
Labour and contractor fees
Building a home requires licensed trades such as builders, electricians and plumbers, with skilled trades typically charging between $50 and $160 per hour. Labour costs vary by location, trade and project complexity, and services such as Hipages can provide local pricing estimates.
Labour shortages also continue to drive construction costs. According to Cotality's Cordell Construction Cost Index report, labour remains a greater cost pressure than materials, while Infrastructure Australia forecasts construction workforce shortages until at least mid-2028.
The Housing Industry Association's Trades Availability Index report also indicates trades are hardest to secure in Perth, Adelaide and Brisbane, leading to higher labour costs and longer build timeframes.
Financing costs
Unless you have enough savings to cover the cost of your build, you'll likely need a construction loan.
Unlike a standard home loan, construction loans are typically interest-only during construction, with interest generally charged only on the funds drawn down at each stage of the build, rather than on the full loan amount. Construction loan interest rates typically range from around 5.0% to 7.5%, depending on the lender, loan structure and your individual circumstances.
While construction lending began to recover in 2025 after reaching its lowest level in more than two decades in 2024, you'll still need to budget for upfront costs such as your deposit, application fees and interest payments throughout the build.
You might also be interested in: Understanding construction home loans
Materials and supplies
Material costs remain one of the largest building expenses, although labour is now the biggest driver of rising construction costs. According to Cotality's Cordell Construction Cost Index report, residential building expenses have increased by around 47% since before the pandemic. As a guide, materials typically account for about 40% of construction costs, with labour making up around 35%.
Builders generally estimate costs using a price per square metre rather than a fixed material cost, making it easier to compare different home sizes and specifications.
Build type | Typical cost per m² (2025–26) | Example: 200m² home |
|---|---|---|
Budget/Project home | $1,600 – $2,700 | $320,000 – $540,000 |
Mid-range custom | $2,700 – $3,500 | $540,000 – $700,000 |
Premium/Architectural | $3,500 – $4,500+ | $700,000 – $900,000+ |
Reminder: Don’t forget to factor in the other costs that come with building a home, like insurance, landscaping and even temporary accommodation during the build.
Different ways to build a house
The cost of building a home can vary depending on the type of project.
Whether you're building on a vacant block or replacing an existing home, each option has different costs, approvals and site requirements to consider.
Preparing an empty site
If you already own land, you'll need to prepare the site before construction can begin. This may include soil testing, site clearing, earthworks and obtaining council approvals.
Site preparation typically costs between $10,000 and $50,000, while connecting utilities such as electricity, water and gas can add another $5,000 to $15,000.
Before finalising your plans, check your local council's planning controls, zoning requirements and any environmental overlays that may affect your build.
Demolishing and rebuilding
A knockdown rebuild can be a cost-effective option if you want a new home in an established location without buying a different block of land.
Demolition typically costs between $10,000 and $50,000, depending on the home's size and whether asbestos or other hazardous materials need to be removed. You'll also need to check for heritage listings, conservation overlays and other council requirements before demolition can begin.
Buying land to build
Buying a block of land gives you the flexibility to build a home that suits your needs. You can buy land separately or choose a house-and-land package, where the land and home design are sold together.
Land prices vary significantly by location. According to the HIA–Cotality Residential Land Report, the national median residential lot price reached a record $391,420 in the September 2025 quarter, while Sydney remained the country's most expensive market, with a median lot price of $615,000.
Before you buy, check whether the land is build-ready. Costs for soil testing, land surveys and connecting utilities can add around $1,500 to $5,000. If you're buying a house-and-land package, these works may be included, but always confirm exactly what's covered in your contract.
You might also be interested in: Renovate, build or buy? Costs and what to consider
Alternatives to building a house
If building a new home isn't within your budget, there are other ways to buy a newly built property that may involve lower upfront costs or a simpler purchasing process.
Home extensions and renovations
If building a new home isn't the right option, extending or renovating your existing property may be a more cost-effective way to create additional space or modernise your home.
You might choose to add a second storey, build a ground-floor extension or renovate high-use areas such as the kitchen or bathroom. The right option depends on your property's layout, your budget and your long-term plans.
Costs vary depending on the size and complexity of the project. As a guide, ground-floor extensions cost between $2,000 and $4,000 per square metre. Renovations can range from around $20,000 for smaller projects to $150,000 or more for extensive renovations with higher-end finishes.
You might also be interested in: Top 10 renovations that add the most value to your home
Buy an off-the-plan home
Buying off the plan means purchasing a property before construction is complete, typically in a new apartment or housing development. Because developers use standardised designs and build multiple homes at once, off-the-plan properties can be more affordable than a custom build.
You'll usually pay a deposit of around 5% to 10% of the purchase price when you sign the contract, with the remaining balance due at settlement once construction is complete.
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Choose a prefabricated or modular home
Prefabricated and modular homes are built in a factory before being transported to your land for installation. They can offer a faster construction timeframe and may cost less than a traditional build, depending on the design and level of customisation.
As a guide, prefabricated homes can cost from around $150,000, with larger family-sized homes ranging between $250,000 and $400,000, depending on their size, design and inclusions. You'll also need to budget for site preparation, utility connections and transport costs, which vary by location.
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Average cost to build a house by state
The cost to build a house in Australia varies by state and territory. Factors such as labour availability, material and transport costs, site conditions, and local planning and approval requirements can all influence the final construction cost.
The table below shows the latest average construction cost of new houses by state and territory, based on Australian Bureau of Statistics data for the 2024–25 financial year.
State | Average cost (2024–25) |
|---|---|
NSW | $565,749 |
VIC | $485,292 |
QLD | $458,868 |
SA | $389,949 |
WA | $407,114 |
TAS | $420,756 |
NT | $475,310 |
ACT | $645,052 |
Australia | $474,939 |
Remember: These figures provide a useful benchmark, but your actual building costs will depend on your location, home design and site-specific requirements.
Average building costs per square metre by state and city
Many builders estimate construction costs using a price per square metre, making it easier to compare projects of different sizes. The figures below are indicative only and will vary depending on your home's design, level of finishes, site conditions, builder and location.
Location | Approximate cost per m² (2025–26) | Remarks |
|---|---|---|
Sydney | $3,000–$4,500 | Australia's highest building costs, driven by labour demand and planning requirements. |
Regional NSW | $2,200–$3,200 | Lower labour costs than Sydney, although freight can increase costs in some areas. |
Melbourne | $2,700–$3,800 | Costs vary by location, design and level of finishes. |
Brisbane | $2,500–$3,800 | Labour demand and transport costs continue to influence pricing. |
Adelaide | $2,400–$3,500 | Generally one of the more affordable capital cities for new builds. |
Perth | $2,600–$3,900 | Labour shortages and strong housing demand continue to push up costs. |
Tasmania | $2,600–$3,800 | Freight costs and a smaller construction workforce can increase costs. |
Northern Territory | $3,000–$4,500 | Remote logistics and workforce constraints contribute to higher costs. |
ACT | $3,000–$4,400 | Higher labour costs and strong building activity support above-average prices. |
These figures are intended as a general guide only. Your total building cost will depend on factors such as your home's size and design, site conditions, inclusions, local council requirements and builder.
Steps to building a house
Starting the process of building a house can feel overwhelming, but breaking it into clear steps will help you navigate the journey effectively. Here's where you'll need to start:
1. Determine your budget: Assess your finances and decide how much you can afford to spend on your new home. Be sure to include costs for land, construction, permits and additional expenses like landscaping or utility connections. An Aussie Broker can explain your options and help compare eligible construction loan products.
2. Choose a location: If you don't already own land, you'll need to find a plot and ensure it's build-ready.
3. Decide on a building approach: Decide between a custom home, a project home or a prefabricated home. Depending on your approach, you might need to find an architect and/or building team to help design and plan your build.
4. Arrange financing: Once you've finalised your construction plan and obtained building approval, you can work with your broker or lender to apply for financing.
5. Start construction and monitor the build: Work with your builder to prepare for construction. It's important to stay involved during construction and communicate regularly with your team. Visit the site to check progress and ensure everything aligns with the contract and design.
6. Final inspection and handover: Once construction wraps up, conduct a thorough inspection with your builder. Ensure any defects or unfinished work are resolved before handover. You'll also need to obtain an occupancy certificate, which confirms the house is safe and ready to live in.
If you're considering building, renovating or extending your current home, but you're not sure of your options, why not book in for a chat with an Aussie Broker? They'll take the time to understand your needs and work with you to find the best option.
Building a home? Speak with an Aussie Broker about your finance options.
Building a home involves more than construction expenses alone.
Labour, materials, site preparation, council requirements, financing and the type of build you choose can all significantly impact your overall budget. Understanding these costs before you begin can help you plan with greater confidence and avoid unexpected expenses during the build.
If you're planning to build, renovate or buy land, an Aussie Broker can explain your construction loan options, compare lenders and help estimate your borrowing power based on your goals and budget. They can also guide you through each stage of the building journey, from financing the land purchase through to the final construction payment.