How much, on average, does it cost to build a house?

Build

In Australia today, how much can you expect to spend when building a house?

Without sounding trite, the answer to this could be summed up with that frustrating yet often accurate phrase: how long is a piece of string?!

There are a number of different factors that can impact the cost of building a house, including but not limited to:

  • the size of the dwelling
  • the location and availability of resources the slope of the land
  • the quality of the fixtures and fittings

With this in mind, there are some “ballpark figures” I can come up with, to give you a guide as to how much it may cost you to build a property.

So: How much can you expect to pay?

First up, let’s get one thing clear: the base price that builders advertise on billboards and display on their websites are generally only a starting point, and do not reflect how much your home will actually cost when it’s 100% completed.

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This is because these “starting from” prices usually only include the basics.

If you are looking for a complete price that includes everything from the carpeting through to the landscaping and driveways as well as the white picket fence at the front, then you need to shop around for what’s known as a “turn-key” package – which means all you need to do at the end is turn the key and step inside.

The cost of building a house varies widely, particularly depending on where in Australia you are planning to build.

And as mentioned, the size of the property and the quality of the finishes will impact the final price, too.

Look at the guideline below, according to BuildSearch.

Average costs to build a new house

CityPrice p/sqmFinish
Adelaide, South Australia$900Basic
Adelaide, South Australia$1030Medium
Brisbane, Queensland$1210Basic
Brisbane, Queensland$1390Medium
Melbourne, Victoria$1180Basic
Melbourne, Victoria$1330Medium
Perth, Western Australia$950Basic
Perth, Western Australia$1000Medium
Sydney, New South Wales$1190Basic
Sydney, New South Wales$1290Medium

For a very high-end home with custom-designed finishes and tailored design, you can expect to pay much more. Anything from $1500-$3000 per square metre and up.

Calculating the average price to build a house in Australia

Everage House PriceIt’s all well and good to get a ‘per square metre’ indication of price – but how do you translate that into actual costs, to give you an understanding of how much you’re going to pay to construct your new home or investment property?

There’s no point in going to the bank and saying, “I need to borrow $1190 per square metre”; they’re going to need a little more info to go on than that!

To help you understand the full costs of building a house, we’ve run the numbers on a standard home build of around 150-170m2.

Based on this sizing, if you wish to build a three- or four-bedroom home with one or two bathrooms, prices typically start as follows:

  • A budget-style, basic home:

From $160,000 for a 3-bedroom home and from $190,000 for a 4-bedroom home. For a turnkey package, add approximately $18-20,000.

  • A standard home:

From $180,000 for a 3-bedroom home and from $200,000 for a 4-bedroom home. For a turnkey package, add approximately $20-22,000.

  • A premium, higher end home:

From $200,000 for a 3-bedroom home and from $220,000 for a 4-bedroom home. For a turnkey package, add approximately $22-25,000.

Adding an additional story can add around $80-100,000 to the cost of construction.

Learning the lingo:

When you go through the process of building a home, you’ll come across plenty of industry jargon that can be tricky to understand – and even trickier to price.

Here are a couple of terms that may be included in your building contract, which are important to understand:

Provisional Sums

A provisional sum is an estimated amount of money that is determined by the builder, according to how much they believe the relevant job or material will cost.

Build MoneyOften the builder can’t put a fixed cost on certain parts of the job at the time of providing a quote or signing the building contract because of unknowns.

For example, while your site may look flat and the builder quotes as such, when staring the works, they may discover large clumps of rock that need to be removed and levelled prior to the slab being laid.

Or when the builder starts digging your foundations they realise they have to dig down further to hit firm footings, which will eventually require more concrete to be poured.

At times like this you’ll need to pay an additional sum on top of the initial contract price, as the allowance that had been provided has been exceeded.

Note: It is always a good idea to budget for around 10% of the total build price to allow for fluctuations in provisional sum prices.

Prime Costs

A prime cost is an item that is subject to change during the construction of your home.

These include things like fixtures and fittings such as tiles, doors and taps, as these items may change depending on your final choice.

You’ll find an estimated amount is provided when signing the building contract, and then depending on your specification of the finishes during the build, these prime costs items may cost more or less if you elect to change them along the way.

Note: these items generally only change due to your change in preferences, so this could be an opportunity to trim costs if you opt for basic or standard fixtures, fittings and finishes.

What other costs can you expect to pay when building a house?

As mentioned earlier, there are a number of costs that come into play when building a house.

For a standard brick home without any custom finishes, you may be able to come up with a fairly clear budget.

However, once you start factoring in extras such as landscaping, driveways, retaining walls, fences and upgrades finishes and fittings, your costs can increase significantly.

These are some of the additional expenses to look out for may include:

Site Costs

Land CostThese are the expenses that are incurred to prepare your block of land before construction can even commence.

These are usually completed by your builder and in most cases, the site costs are charged on top of the build price.

Site costs for an average block of land can hover around the $15,000 to $25,000 mark, however again, the location, size and slope of the block of land can have a substantial impact on the final charges.

Some of the typical expenses involved in a site cost can be:

  • Connections to services such as water, sewer, electricity and gas
  • Fences
  • Retaining walls
  • Site clearance (trees, roots, bushes)
  • Site survey
  • Soil tests

Other factors that can impact price

Once you have signed a contract with a builder and decided up the layout and design of your property, they will make plans and prepare documents, before arranging a ‘pre start meeting’.

House CostsThe pre-start meeting is at the stage at which your house plans are finalised.

They are approved by council and you are ready to make your final choices in regards to all of the design aspects, such as wall colours, the types of light fittings and the materials used on the roof and on floors.

The ‘prime costs’ are generally already in place by the builder, however keep in mind that in base contract packages, the prices factored in often account for the cheapest materials, the most basic fittings and the most standard fixtures.

If you wish to change any of these, you could incur an extra cost.

Some of the parts of the home that you may wish to ‘upgrade’ during this process include:

  • Roof: depending on the materials you choose for your roof, such as tiles or colorbond, this can vary widely
  • Tiling: an allowance for a tiling amount per sqm will be made, but this can change depending on the quality and size of your final choice.
  • Fixtures and fittings: fancy, nonstandard taps and European appliances will obviously cost more than standard Australian-made fixtures and fittings. Additionally, labour costs may increase if you select items that are more complicated to install. Inclusions such as fully ducted air conditioning can cost up to $10,000 (more for two-storey home).
  • Kitchen: If you’ve ever shopped for a kitchen benchtop, you know how widely costs of a kitchen upgrade can vary. Again, the final price will depend on the quality of the item you choose and what is in your initial specification in the contract.
  • Electrical: If you decide to change your lighting layout from what has been initially drawn, this can add costs. For example, if the specifications in your contract allow for one standard light per room but you wish to have multiple downlights, this extra cost can add up.

Extra costs you should allow for

Some extra costs you need to take into account and which could end up costing you a significant amount of money include:

  • Soil Quality –One of the first things your engineers will organise is a soil test. They do this by drilling some bore holes and the best classification you can get is M classification soil. If your soil is more difficult to work with eg. Clay, Sand or Rock then you’re likely to have to pay extra.
  • Slope of the block– The easiest site to build on is a flat block. If your block slopes you’re likely to have to pay extra for more foundations, or to cut and fill the site (make it flat) and possibly for retaining walls.
  • Flood prone areas – some sites require the house to be raised with the floor level above natural ground level to cope with excessive rain or floods and this can add to the construction cost.

Contract variations

The final thing can impact your build price is variations, which are changes to the contract which are made after you have signed it.

Bulid HouseThe good news is, there is often an opportunity to change your mind as the build progresses if you really want to; perhaps you’ve been thinking about that glass splashback in the kitchen and decided it’s really not a good idea.

The bad news is, it will cost you!

Variation costs are costs you want to avoid where possible, as builders usually have a mark-up of about 20%-25% on variations.

On top of this, builders usually charge a variation fee of $250 each. These fees should be set out in your contract.

In conclusion…

The average cost of building a house varies due to a range of factors, including size, location and quality of fixtures and fittings.

While I’ve tried to give you estimates the final price will depend on whether you chose a display home which the builder has designed with cost efficiency in mind, or a unique home- your own special castle which has never been built before.

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Bryce Yardney

About

Bryce is a property development specialist, having successfully sourced, project managed and completed hundreds of development projects for Metropole’s clients, helping them create substantial wealth.Visit Metropole.com.au


'How much, on average, does it cost to build a house?' have 2 comments

    Avatar

    October 19, 2019 Syed

    Thanks for providing a very detailed estimate of building a new house. This information is very useful for someone like me who has no idea from where to begin! I will appreciate if you can also provide a similar study on cost of renovating an existing house. For example, adding another storey with 2 bedrooms and a bathroom, living space and a kitchenet. Replacing an existing kitchen and bathroom etc. Once again thanks for very useful article.

    Reply

      Michael Yardney

      October 19, 2019 Michael Yardney

      There are even more variables when estimating renovations – but interestingly that’s exactly what we’re covering next weekend in my Renovations and Property Development workshop

      Reply


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