What is the Average Cost of Building a House in Sydney?

Building a home is more than just an investment; it’s a personal journey that culminates in a space that’s uniquely yours. However, understanding the financial implications of this venture is crucial, especially in a bustling city like Sydney. So, what is the average cost of building a house in Sydney? Let’s delve into this topic.

Factors Influencing Building Costs

Before we discuss figures, it’s important to understand the factors that influence the cost of building a house. These include the size and design of the house, the choice of materials, the complexity of the site (slope, soil type, accessibility), and the level of finish you desire.

Average Building Costs in Sydney

According to data from the Australian Bureau of Statistics, the average cost of building a residential home in Australia was $1,398 per square meter in 2020. However, Sydney, being a prime location, tends to have higher costs. As a rule of thumb, for a standard-quality finish, you can expect to pay between $1,800 and $5,000 per square meter.

Breakdown of Costs

These costs can be broken down into several components:

  1. Construction Costs: This is the largest portion, usually 60% of the total cost. It includes labour and materials required to construct the house.
  2. Site Costs: Around 15-20% of your budget will go towards preparing the site, which can involve clearing, excavation, and ensuring it’s level.
  3. Finishing Costs: The final 20-25% is spent on finishing touches like painting, flooring, and installing fixtures and fittings.

Ways to Control Building Costs

While the costs may seem steep, there are ways to control them:

  1. Plan Ahead: A well-thought-out plan can help avoid costly changes down the line.
  2. Choose Your Builder Wisely: A reputable builder like Bolt Building, with a track record of delivering quality work on time and on budget, can save you money in the long run.
  3. Consider Your Design: Simple designs are generally cheaper to build. Complex designs with intricate details can significantly inflate costs.


Building a house in Sydney is undoubtedly a significant investment. However, with careful planning, the right team, and smart choices, it can be an incredibly rewarding endeavour. Remember that the cheapest quote isn’t always the best option – quality, reliability, and transparency should be your guiding principles when choosing a builder.

At Bolt Building, we’re committed to delivering top-notch services across the full spectrum of building needs, ensuring your needs remain at the core of our work. Contact us today to start your home-building journey in Sydney.

Australian Bureau of Statistics, 2020