Renovating a bathroom can breathe new life into a home, increase its value, and improve everyday comfort. But before starting the journey of transforming a tired or outdated space, it’s essential to understand what kind of financial investment is involved. The cost of a bathroom renovation can vary dramatically depending on the size of the space, the scope of work, and the materials chosen. In Australia, homeowners are often surprised by how quickly expenses can add up.

The scope of bathroom renovations can range from cosmetic upgrades like replacing fixtures to full-scale overhauls involving layout changes and plumbing updates. Understanding the different cost components can help set realistic expectations and avoid budget blowouts.

Average Cost of a Bathroom Renovation in Australia

As of 2025, the average cost of a standard bathroom renovation in Australia typically falls between $15,000 and $30,000. However, this figure can vary significantly depending on various factors. For example:

• Budget renovations: $5,000 – $15,000

• Standard renovations: $15,000 – $30,000

• Luxury renovations: $30,000 – $50,000+

Smaller bathrooms or ensuite updates can be more affordable, while master bathrooms with premium finishes and custom features will attract a higher price tag.

Key Cost Factors to Consider

1. Size of the Bathroom

The size of the bathroom is one of the most significant factors influencing renovation costs. A compact powder room is far less expensive to renovate than a spacious master bathroom. The number of fixtures, amount of tiling, and complexity of the design all scale with the room’s dimensions.

2. Extent of Renovation

Cosmetic changes like painting, updating tapware, and changing light fixtures cost far less than structural changes. Full-scale renovations involving plumbing relocation, waterproofing, and new electrical layouts are far more complex and costly.

3. Material Selections

Tile quality, fixtures, cabinetry, benchtops, and finishes dramatically affect cost. For instance, ceramic tiles are more affordable than natural stone, and laminated vanities cost less than custom-made timber units. Homeowners can often save by opting for mid-range finishes that offer durability and style without premium pricing.

4. Labour Costs

In Australia, labour often constitutes 40–60% of total renovation expenses. Qualified tradespeople such as plumbers, electricians, tilers, and waterproofers typically charge between $50 and $120 per hour depending on experience and location.

5. Plumbing and Electrical

If the layout remains the same, costs are kept in check. However, moving fixtures such as the toilet, shower, or vanity requires significant plumbing work and can add thousands to the overall cost. Similarly, upgrading lighting or installing underfloor heating increases electrical expenses.

Typical Breakdown of Bathroom Renovation Costs

Here’s a general breakdown of how costs may be distributed in a standard renovation project:

These figures are averages and may shift based on region, design complexity, and current market rates for materials and labour.

Mid-Range vs Luxury Renovations

Mid-range renovations often include updated fixtures, ceramic tiling, a standard vanity, and semi-frameless shower screens. They strike a balance between functionality and style and typically cost between $15,000 and $25,000.

In contrast, luxury upgrades might involve marble or porcelain tiles, custom cabinetry, frameless glass, freestanding bathtubs, designer tapware, smart lighting, and high-end waterproofing systems. These renovations can easily surpass $30,000, especially when structural changes are involved.

It’s worth noting that energy-efficient and water-saving fittings, while potentially more expensive upfront, can provide long-term savings and are increasingly prioritised across Australia.

Regional Price Variations

Bathroom renovation costs vary depending on the city or state. For example:

• Sydney and Melbourne tend to have higher labour and material costs, with standard renovations averaging between $20,000 – $30,000.

• Brisbane, Perth, and Adelaide might be slightly more affordable, averaging between $15,000 – $25,000.

• Regional and rural areas may have cheaper labour, but fewer tradespeople can result in delays or travel surcharges.

Hidden and Unexpected Costs

Renovations are rarely straightforward. Several unexpected costs can arise once the project is underway:

• Water damage or mould behind old tiles

• Asbestos in older homes (especially behind walls or under tiles)

• Structural issues that require reinforcing

• Delays in material delivery or trades scheduling

• Permit and approval fees, depending on the extent of the renovation and council requirements

To manage these risks, it’s recommended to include a 10–20% contingency buffer in the budget.

How to Reduce Costs Without Compromising Quality

Smart choices can result in substantial savings without sacrificing function or aesthetics:

• Keep the layout: Avoid moving the plumbing unless absolutely necessary.

• Opt for prefabricated fixtures: Prefab vanities and shower screens cost less than custom-made alternatives.

• Mix materials: Use more affordable tiles in most areas and splurge on a feature wall or floor section.

• Buy in bulk or during sales: Suppliers often offer discounts on bulk orders or during seasonal sales.

• Do some tasks DIY: While licensed work like plumbing and electrical must be done by professionals, jobs like painting or demolition can be handled by the homeowner to save money.

How Long Does a Bathroom Renovation Take?

A standard bathroom renovation usually takes between 2 and 4 weeks to complete. However, timelines can be extended due to unforeseen issues or coordination between multiple trades. Here’s a rough timeline:

1. Planning and design: 1–3 weeks

2. Demolition: 2–3 days

3. Rough-in plumbing/electrical: 2–4 days

4. Waterproofing: 2 days (including drying time)

5. Tiling: 3–5 days

6. Fit-out and final touches: 3–5 days

Planning in advance and working with experienced professionals can help streamline the process.

Return on Investment (ROI)

While bathrooms are one of the more expensive rooms to renovate, they offer strong returns in property value. A well-designed, modern bathroom can increase a home’s resale value significantly. On average, homeowners can expect a 60–70% ROI on a well-executed bathroom renovation. In competitive markets, it can be the difference between a quick sale and a stale listing.

Choosing the Right Professionals

Selecting qualified and licensed professionals is essential to ensure quality workmanship and compliance with building codes. Here are a few tips:

• Verify licences and qualifications

• Check references and online reviews

• Request multiple quotes for comparison

• Ensure insurance coverage is in place

• Get detailed contracts outlining scope, timeline, and payment stages

Cutting corners with unlicensed trades may reduce costs in the short term but can lead to costly repairs and compliance issues later on.

Renovating a bathroom is a significant investment but can deliver comfort, aesthetic appeal, and increased property value when executed thoughtfully. The final cost depends on several factors including the room’s size, scope of work, material choices, and labour rates. While the average project can range from $15,000 to $30,000, strategic planning and budgeting can help homeowners achieve their desired outcomes within financial limits. For those considering an upgrade, researching costs in advance and working with reputable trades is the key to a successful and satisfying result..