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July 24, 2026If you’re planning a bathroom upgrade, bathroom renovation cost is probably one of the first things you’ll want to know. Whether you’re refreshing an outdated space or creating a brand-new bathroom, renovation costs can vary significantly depending on the size of the room, the quality of the materials, and the amount of plumbing and electrical work involved.
While a simple cosmetic renovation may cost around $8,000 to $15,000, a standard bathroom renovation typically falls between $15,000 and $35,000. Larger bathrooms, premium finishes, and major layout changes can push costs beyond $35,000.
In this guide, we’ll break down what influences bathroom renovation costs, where your budget is likely to go, and how to get the most value from your investment.
How Much Does an Average Bathroom Renovation Cost?
The average bathroom renovation cost in Australia is often quoted at around $26,000, although every project is different. The final price depends on your renovation goals, the condition of your existing bathroom, and whether you’re making cosmetic improvements or a complete transformation.
| Renovation Type | Estimated Cost |
| Budget renovation | $8,000–$15,000 |
| Mid-range renovation | $15,000–$35,000 |
| Premium renovation | $35,000+ |
A budget renovation generally focuses on updating the appearance by replacing fixtures, repainting, or installing new tiles while keeping the existing layout.
A mid-range renovation often includes new plumbing fixtures, upgraded finishes, improved lighting, waterproofing, and a complete refresh of the space.
Premium renovations usually involve custom cabinetry, designer fixtures, luxury materials, underfloor heating, and significant plumbing or structural changes.
What Affects Bathroom Renovation Costs?
No two bathrooms are exactly alike, which is why renovation costs can differ so much. Understanding what influences the price can help you plan a realistic budget.
Bathroom Size
Larger bathrooms generally require more materials, more labour, and more time to complete. More floor area means additional waterproofing, tiling, cabinetry, and fixtures.
Quality of Materials and Fixtures
Your choice of tiles, vanities, tapware, shower screens, bathtubs, and toilets will have a noticeable impact on your budget. While premium products cost more upfront, they often provide better durability and a longer lifespan.
Plumbing Requirements
One of the biggest cost factors is plumbing. If your new design keeps the toilet, shower, and vanity in their existing locations, renovation costs are usually lower. Moving these fixtures often requires new pipework, additional labour, and more extensive construction.
Electrical Work
Modern bathrooms commonly include LED lighting, heated towel rails, exhaust fans, power points, and illuminated mirrors. Adding or relocating electrical fittings requires a licensed electrician and contributes to the overall project cost.
Waterproofing
Proper waterproofing is essential for protecting your home from moisture damage. It’s a legal requirement in Australian bathroom renovations and should always be completed by qualified professionals before tiling begins.
Labour Costs
Bathroom renovations involve several trades working together, including plumbers, electricians, waterproofers, tilers, painters, and cabinet installers. Labour often represents a significant portion of the overall renovation budget.
Structural Changes
Removing walls, enlarging the bathroom, or altering the room layout can increase costs due to additional engineering, construction, and permit requirements.
Why Plumbing Can Have a Big Impact on Your Budget
While many homeowners focus on selecting tiles and fixtures, plumbing often plays one of the biggest roles in determining the overall renovation cost.
If your renovation includes moving major plumbing fixtures, additional work may be required to relocate water supply and drainage pipes beneath the floor or inside the walls.
Common upgrades that increase plumbing costs include:
- Relocating the toilet
- Moving the shower to a different wall
- Installing a freestanding bath
- Adding a double vanity
- Replacing ageing or damaged pipework
- Upgrading old plumbing to meet current standards
On the other hand, keeping your existing plumbing layout can significantly reduce labour costs while still achieving a completely new look through updated finishes and fixtures.
Working with experienced plumbers during the planning stage can also help identify potential issues before construction begins, reducing the likelihood of unexpected costs later in the project.
Typical Bathroom Renovation Cost Breakdown
Although every renovation is different, most bathroom projects include several common expenses.
Demolition
The first stage involves removing old tiles, fixtures, cabinetry, and fittings to prepare the space for renovation.
Plumbing
This includes installing new pipes where required, connecting fixtures, testing the system, and ensuring everything complies with Australian plumbing standards.
Waterproofing
A waterproof membrane is applied to floors and walls to prevent leaks and moisture damage before any tiling begins.
Tiling
Wall and floor tiling usually represents one of the largest material and labour costs in a bathroom renovation. The final price depends on tile size, material, and installation complexity.
Electrical Installation
Lighting, exhaust fans, heated towel rails, power points, and mirrors all require professional electrical installation.
Fixtures and Fittings
Your budget should also allow for:
- Vanity
- Basin
- Toilet
- Shower screen
- Bath
- Tapware
- Mirrors
- Accessories
Choosing durable products with quality finishes can provide better long-term value and reduce maintenance.
Painting and Finishing
Once the major work is complete, painting, silicone sealing, and finishing touches bring the renovation together and give the bathroom its polished appearance.
Ways to Keep Bathroom Renovation Costs Under Control
A successful renovation doesn’t always require the biggest budget. Careful planning can help you achieve excellent results while avoiding unnecessary expenses.
Keep the Existing Layout
Leaving the toilet, shower, and vanity in their current positions reduces plumbing work and can save a considerable amount of money.
Plan Before Construction Begins
Making design changes after work has started often leads to delays and additional costs. Finalising your layout, materials, and fixtures early helps keep the project on schedule.
Choose Quality Over Trends
Stylish bathrooms are important, but timeless finishes often provide better long-term value than chasing short-lived design trends.
Set Aside a Contingency Budget
Unexpected issues such as hidden water damage, outdated plumbing, or structural repairs can arise once demolition begins. Setting aside around 10–20% of your budget helps cover unforeseen costs without disrupting the project.
Hire Licensed Professionals
Bathrooms involve plumbing, waterproofing, and electrical work that must comply with Australian regulations. Hiring experienced, licensed trades helps ensure the work is completed safely and to a high standard.
FAQs About Bathroom Renovation Cost
Can I renovate a bathroom for under $15,000?
Yes. Smaller bathrooms or cosmetic renovations that keep the existing plumbing layout may be completed within this budget, depending on your choice of materials and fixtures.
What is usually the most expensive part of a bathroom renovation?
Labour, plumbing, waterproofing, and tiling are often the largest expenses. Premium fixtures and custom cabinetry can also significantly increase the total cost.
Does moving plumbing increase renovation costs?
Yes. Relocating toilets, showers, bathtubs, or vanities typically requires new pipework and additional labour, making it one of the biggest factors affecting renovation costs.
How long does a bathroom renovation take?
Most standard bathroom renovations take around 2 to 4 weeks to complete once construction begins, although larger or more complex projects may take longer.
Conclusions
A bathroom renovation is one of the most rewarding home improvements you can make, but careful planning is key to achieving the best results. Understanding what influences renovation costs helps you create a realistic budget and make informed decisions before work begins.
At Neighbourhood Plumbing, we provide professional bathroom renovations across Melbourne, combining quality craftsmanship with reliable plumbing expertise.
If you’re ready to start your bathroom renovation, get in touch with us today to discuss your project and receive expert advice tailored to your home.
About the Author
From unclogging the toughest drains to repairing leaking toilets, Ricky is a seasoned plumber who has brought his craftmanship to homes across Melbourne. He is passionate about sharing plumbing tips just as much as he is about fixing your plumbing issues. So, when your taps or pipes begin leaking, you know who to call.
