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Renovating · Koste Knowledge Base

How Much Does a Bathroom Renovation Cost in Australia?

Published 26 June 2026 · Last updated 26 June 2026

Quick Answer

A bathroom renovation in Australia typically costs between **$15,000** and **$35,000**, depending on size, finishes, and location. Costs can vary significantly based on customisation and quality of materials.

Renovating a bathroom is one of the most effective ways to enhance the value and appeal of a property. In Australia, the cost of a bathroom renovation can vary widely, generally ranging from $15,000 to $35,000. Factors such as the size of the bathroom, the quality of the materials, and the location all play significant roles in determining the final cost.

When considering a bathroom renovation, it's essential to understand the breakdown of typical expenses. The bulk of the cost often goes into labor, which can account for around 40-50% of the total budget. This includes demolition, plumbing, electrical work, and installation. Materials such as tiles, fixtures, and fittings also constitute a significant portion of the budget. High-end finishes and custom designs can quickly escalate costs.

One common misconception is that a higher spend always equates to a higher return on investment. While quality finishes can enhance the appeal, it's crucial to balance costs with the expected increase in property value. An overly luxurious bathroom in a modest property may not yield the desired financial return.

To see how this plays out, consider a practical example. Imagine renovating a standard 3m x 2m bathroom in a 1990s-built suburban home in Melbourne. The owner opts for mid-range fixtures and tiles, spending approximately $18,000. With labor costs at $9,000, materials at $6,000, and contingency costs at $3,000, the renovation comes in on budget. If the property value increases by $25,000 post-renovation, at a 37% marginal tax rate, the potential capital gain tax liability would be reduced, enhancing the overall investment value.

In our experience reviewing thousands of properties across Australia, several patterns emerge. Firstly, underestimating the cost of plumbing changes can lead to budget blowouts. Secondly, failing to allocate a contingency budget for unforeseen issues, such as water damage, is a common oversight. Thirdly, investors often overlook the impact of renovation timing on rental income, particularly in high-demand areas.

The answer can differ depending on your situation. For instance, a renovation in a heritage-listed property may require additional approvals, impacting both cost and timeline. Post-9 May 2017 changes mean that if you acquire a second-hand property, you can't claim Division 40 depreciation on plant and equipment unless you add new items during the renovation. Renovating a bathroom in a commercial property might also involve different compliance requirements compared to residential properties.

Given these complexities, it's crucial to seek professional advice. A Chartered Quantity Surveyor can provide a detailed cost assessment, while an accountant can advise on tax implications, ensuring you make informed decisions and maximise your return on investment.

  • Assess your bathroom's current condition and outline your renovation goals.
  • Obtain detailed quotes from multiple contractors to compare costs.
  • Consult a Chartered Quantity Surveyor for a professional cost assessment.
  • Review potential tax implications with your accountant, especially for investment properties.
  • Set a realistic budget, including a contingency for unexpected expenses.
  • Schedule the renovation to minimise disruption to rental income.
  • Frequently Asked Questions

    What is the average cost of a bathroom renovation in Sydney?

    In Sydney, bathroom renovations typically range from **$20,000** to **$40,000** due to higher labor costs and demand for quality finishes.

    Can I claim tax deductions on a bathroom renovation?

    Yes, if the property is an investment, you may be able to claim capital works deductions under **Division 43** of the ITAA 1997.

    How long does a bathroom renovation usually take?

    A typical bathroom renovation takes 3 to 6 weeks, depending on the complexity and any unforeseen issues.

    Do I need council approval for a bathroom renovation?

    Approval is usually not required unless you're altering the structure or plumbing system. Check with your local council for specifics.

    How can I minimise disruption during a rental property renovation?

    Plan renovations during vacancy periods, or provide tenants with temporary accommodation if necessary.

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    Written by Koste Team · Koste Chartered Quantity Surveyors · AIQS Member · RICS Member · TPB Registered · 1300 669 400 · info@koste.ai