Installing a new toilet might seem like a straightforward job, but the cost and complexity can vary quite a bit depending on a range of factors. Whether you’re building a new home, renovating your bathroom, or simply replacing an outdated unit, it’s important to understand what goes into toilet installation costs in Australia, including toilet replacement costs . From the type of toilet you choose to the condition of your existing plumbing, knowing what to expect can help you budget smarter and avoid any unpleasant surprises.

What Affects the Cost of Toilet Installation?

Several factors, including toilet style, can influence the overall cost of toilet installation, and it’s not just the price of the toilet itself.

Type of Toilet: The design of the toilet you choose will significantly affect both the purchase price and the installation cost. More complex or high-end models require more skill and time to install.
Existing Plumbing Setup: If your current plumbing configuration aligns with your new toilet, installation will be simpler and cheaper. However, if plumbing needs to be moved or upgraded, it could significantly raise costs.
Location: Labour rates differ between metropolitan and regional areas. In general, trades in major cities such as Sydney and Melbourne charge higher rates than those in regional or rural towns.
Accessibility and Space Constraints: If the toilet is being installed in a hard-to-reach area or a tight bathroom space, it could take longer and require more effort, impacting the final bill.
New Install vs Replacement: Replacing an existing toilet is typically cheaper than installing one in a completely new location, where additional plumbing, drainage, or even structural work may be required.

Average Cost of Installing a Toilet in Australia

On average, the cost to install a toilet in Australia ranges from $150 to $1,500. This wide range reflects the different variables mentioned above, such as the type of gravity flush system .

Basic Toilet Replacement: Expect to pay between $300 and $400 for a simple replacement of a standard toilet using existing plumbing.
Toilet Installations with Modifications: If plumbing needs to be altered or relocated, the cost could jump to $600–$1,000 or more.
New Toilet Installations (No Existing Plumbing): For entirely new toilet installations (e.g., in a newly added bathroom), costs can exceed $1,200, depending on the scope of the work.

Metro vs Regional Areas

Plumbing rates in metro areas are usually higher. For example:

Sydney: $60 to $120 per hour
Perth: $70 to $130 per hour
Regional NSW/VIC/QLD: $50 to $90 per hour

These rates reflect the availability of trades, competition, and travel costs involved for remote jobs.

Cost Differences Between Toilet Types

The style of toilet, including a new toilet suite, you choose will influence both the cost of the unit and the complexity of installation. Here’s a rough breakdown:

1. Close-Coupled Toilets

These traditional designs have the cistern sitting directly on the toilet pan. They’re the most affordable and easiest to install.

Toilet cost: $250–$1,000
Installation cost: $150–$400

2. Back-to-Wall Toilets

These have the cistern concealed within the wall or cabinetry, creating a streamlined look.

Toilet cost: $400–$1,200
Installation cost: $300–$600

3. Wall-Hung Toilets

Mounted on the wall with an in-wall cistern, these are sleek and modern but require reinforced walls and more intensive labour.

Toilet cost: $800–$1,500+
Installation cost: $500–$1,200+

4. Smart Toilets / Bidet Toilets

These feature integrated bidets, heated seats, and even remote controls. While luxurious, they come at a premium.

Toilet cost: $1,000–$12,000
Installation cost: $500–$1,200

Tip: Some toilets are sold as supply-and-install packages, particularly through bathroom showrooms or renovation services, and may require a toilet installer . Be sure to check whether installation is included or quoted separately.

Additional Costs to Consider

Beyond the base price, there are several extra expenses you might encounter:

Removal and Disposal of Old Toilet: Some plumbers include this, but others may charge an extra $50 to $150.
Plumbing Upgrades: Older homes might require new pipework or shut-off valves, costing hundreds more depending on the condition and complexity.
Accessories: Toilets often don’t include all necessary components. Be prepared to purchase additional items such as:
- Shut-off valves ($15–$50)
- Wax or rubber seals ($10–$30)
- Cisterns (if not built-in) ($80–$300)
- Mounting frames (for wall-hung toilets) ($150–$400)
Waterproofing or Floor Repairs: In some cases, replacing the toilet may reveal floor damage or necessitate waterproofing, adding to your overall costs.

DIY vs Professional Installation: Cost and Risk

DIY Installation

Pros: Saves on labour; kits and guides are readily available.
Cons: Risk of leaks, damage, or non-compliance with plumbing codes.
Cost: Around $250–$400 (just for toilet and materials).

Professional Installation

Pros: Licensed plumber guarantees a compliant, leak-free installation.
Cons: Higher cost upfront.
Cost: $300–$1,500 depending on complexity.

Important Note: In Australia, major plumbing work must be carried out by a licensed plumber. DIY efforts that breach regulations can lead to fines, insurance issues, or costly damage repairs down the line, especially due to improper installation .

What’s Included in a Professional Toilet Installation Service?

Most reputable plumbers will offer a full installation package, which may include:

Delivery of the toilet unit (if purchased from them)
Removal and disposal of the old toilet
Installation of the new toilet (including cistern, seat, and fittings)
Sealing and caulking around the base
Testing for leaks and flush functionality
Cleanup of the work area

Pro Tip: Always ask for a written quote that details what’s included to avoid hidden fees.

How to Get an Accurate Quote

To ensure you receive a realistic estimate:

Shop Around: Get quotes from at least three licensed plumbers in your area.
Be Specific: Provide photos, describe the current plumbing situation, and clarify whether it’s a new install or a replacement.
Ask Questions: Inquire about inclusions like removal of the old toilet, plumbing adjustments, and whether they charge call-out fees.

Online platforms such as Hipages, Oneflare, and ServiceSeeking are helpful for comparing reviews and quotes from local tradies.

When It’s Worth Upgrading Your Toilet

If your current toilet is more than 10–15 years old, upgrading can offer several advantages:

Water Efficiency: Modern toilets use as little as 3–4.5 litres per flush compared to older models that use up to 12 litres, helping reduce water bills and environmental impact.
Functionality & Comfort: Features like dual-flush buttons, rimless bowls, soft-close seats, and bidets improve hygiene and ease of use.
Aesthetic Appeal: A new toilet can significantly modernise a bathroom’s look and feel.
Government Rebates: Some state and local councils offer rebates for replacing older toilets with water-saving models. Check with your local water authority.

Frequently Asked Questions (FAQs)

How much should toilet installation cost?
Installation alone typically costs between $150 and $400. With unit and accessories, total costs range from $300 to $1,500+.

How much does it cost to install a new toilet?
For a new install in a bathroom without existing plumbing, costs can exceed $1,000 due to the extra labour and materials involved, including considerations for water saving toilets .

Do you need a plumber to install a toilet in Australia?
Yes, plumbing regulations regarding the toilet outlet quire that a licensed plumber perform toilet installations to ensure safety and compliance.

Should a plumber install a toilet?
Absolutely. They are especially knowledgeable about one piece toilets, bringing expertise, protecting your warranty, and ensuring compliance with codes and insurance requirements.

How much does a plumber cost to fit a toilet?
On average, you’ll pay $150–$400 for installation of a two piece toilet , plus any extras.

How long should it take a plumber to replace a toilet?
A simple replacement usually takes 1–2 hours, though more complex jobs can take longer.