Dealing with damaged or ageing pipes is a common scenario for homeowners across Australia. When you start noticing frequent blockages, slow drains, or wet patches appearing mysteriously in your garden, you know something’s not right underground. These symptoms often point to a blocked drain or blocked drains, which are common signs of a plumbing issue. In many cases, they may indicate deteriorating pipes that require professional attention. Often the first thing that crosses your mind is the potentially high cost and disruption of replacing those pipes.
Fortunately, there is a modern solution that can tackle these problems without tearing apart your property: pipe relining.
Pipe relining is gaining popularity for being a fast, effective, and far less intrusive alternative to traditional pipe replacement. But when it comes to pricing, many homeowners wonder exactly how much they should expect to pay.
This article will provide clear, practical information on pipe relining costs, helping you understand exactly what you’re getting into before you call a plumber.
What is Pipe Relining?
Pipe relining is a trenchless plumbing method used to repair damaged underground pipes without excavation. This relining process is a modern approach to pipe repair, involving the insertion of a flexible liner coated with a special resin into the existing pipe. Once positioned correctly, the liner is inflated and allowed to cure, hardening into a durable, smooth, new pipe inside the old one.
Because it doesn’t require digging up your property, pipe relining has become a go-to solution for homeowners and businesses looking to fix damaged pipes with minimal disruption.
The entire process typically involves:
- Inspecting the pipe using CCTV cameras to determine the extent and location of damage.
- Cleaning the pipe thoroughly using high-pressure water jetting to remove roots, debris, and buildup.
- Inserting and positioning the liner, which is coated with epoxy resin, within the damaged pipe.
- Inflating and initiating the curing process, where the resin hardens to form a strong, seamless new pipe interior.
This trenchless method offers multiple benefits.
Relining work significantly reduces repair time compared to traditional methods, prevents extensive landscaping damage, and ensures long-lasting results.
Pipe relining might initially seem expensive, but when you consider how much landscaping, driveway, or pathway restoration can add to a traditional excavation job, it quickly becomes an appealing choice.
Drain Pipe Relining vs Existing Pipe Replacement
Traditional pipe replacement typically involves digging large trenches to physically remove and replace old pipe, such as clay pipes or severely damaged sewer pipes. This method is not only messy but also disruptive, particularly if the pipes run under driveways, gardens, or internal flooring.
Traditional pipe replacements can take days or even weeks, depending on the complexity, with costs often climbing quickly due to excavation and restoration requirements. For example, replacing a full sewer line in Australia can easily run between $15,000 and $20,000, not counting the additional cost and inconvenience of restoring your landscaping, driveway, or internal flooring.
Pipe relining, in comparison, skips the excavation altogether and is suitable for various parts of the plumbing system, including sewer lines and stormwater drains.
Most relining jobs are completed within just a couple of days with minimal disruption to your daily life. Because relining avoids significant property damage, it often results in substantial overall cost savings, generally around 30% cheaper than traditional excavation-based repairs. Depending on the job’s complexity, some homeowners even report savings closer to 40% to 50%.
Here’s a quick side-by-side comparison:
| Factor | Pipe Relining | Traditional Replacement |
| Cost | Usually cheaper overall (typically 30% less) | Typically more expensive, especially with property restoration |
| Time Required | Usually completed within 1-2 days | Often takes days to weeks |
| Property Damage | Minimal to none | Significant, including excavation and landscaping repair |
| Durability | Long-lasting, often guaranteed for 20+ years | Long-lasting, but with extensive disruption initially |
| Convenience | High: minimal lifestyle disruption | Low: may require temporary relocation or significant disruption |
| Types of Pipes | Can be used for sewer pipes, stormwater pipes, stormwater drains, and boundary trap | Typically used for old pipe, clay pipes, or pipes that are too damaged for relining |
There are some cases where traditional replacement might still be necessary. If a pipe is entirely collapsed, severely crushed, or inaccessible to the relining equipment, replacement might be unavoidable. In such situations, alternative methods may also be considered if relining is not suitable.
But for the vast majority of typical residential plumbing issues, pipe relining offers a reliable, convenient, and cost-effective solution.
With a clearer understanding of how pipe relining compares to traditional pipe replacement, you’re probably curious about specific costs.
Next, we’ll break down exactly how much you can expect to pay for pipe relining in Australia and what factors influence the final price.
How Much Does Pipe Relining Cost?
One of the first questions homeowners have about pipe relining is the cost. To obtain an exact price for your pipe relining job, a professional assessment is required, as the final cost depends heavily on the extent of work needed and site-specific factors.
To make sense of these figures, you’ll find most relining providers price their pipe relining services based on the length of pipe needing repair, typically quoting per linear metre, and the complexity of the job.
For straightforward pipe repairs, the average cost per linear metre ranges between $400 and $1,000. When considering sewer pipe relining cost, for example, prices are often quoted per linear metre, with additional setup fees depending on the project.
Here’s a practical breakdown of typical costs you might encounter when considering pipe relining:
| Type of Relining Job | Typical Cost (AUD) |
| Small patch repair (sectional relining of one spot) | ~$2,000 – $3,000 total (minimum fee) |
| Standard relining (longer pipe sections) | ~$500 – $800 per linear metre |
| Junction relining (bends or intersections) | ~$2,000 – $4,500 per junction |
| High-end (larger pipes or difficult access) | Up to $1,000+ per linear metre |
These figures represent general industry standards based on typical residential projects. It’s common for providers to charge an initial fee covering CCTV inspections, cleaning, and the equipment setup, often included in the first metre’s price. For instance, a provider might charge around $2,400 to cover inspection and cleaning plus the first metre, then reduce the rate to $650–$850 for each additional linear metre.
For example, relining a short 2-metre segment might cost around $3,000, but a larger 10-metre section could total approximately $6,000–$8,000 due to the reduced per-metre rate after the initial setup. Costs also vary slightly by location, with metropolitan areas like Sydney or Melbourne potentially costing slightly more than smaller towns or regional areas.
By comparison, traditional pipe replacements involving excavation can quickly escalate to $15,000–$25,000 or more once landscaping restoration and property repair costs are included. This makes a pipe relining job an attractive financial alternative in most scenarios.
Factors Affecting the Cost of Pipe Relining
Pipe relining costs vary considerably based on several key factors, including whether you are dealing with damaged or deteriorating pipes or simply maintaining existing pipes.
Every home or business presents a unique situation, which means understanding these variables can help you better predict your overall costs. Here are the main factors influencing relining costs:
- Length of Pipe: The longer the section of pipe requiring relining, the higher the total cost. While the per-metre rate often reduces slightly with longer jobs, overall cost rises with length.
- Pipe Diameter: Larger diameter pipes (150mm or more) require more materials and labour, resulting in higher costs compared to standard residential pipes (usually around 100mm).
- Pipe Accessibility: Pipes located under concrete slabs, buildings, or deep underground can be challenging to reach, requiring specialised equipment and increasing the overall price.
- Complexity (Junctions or Bends): Junctions, bends, and intersections in pipes increase complexity, as relining these points demands precise work and robotic equipment to reinstate connections. Each additional junction typically adds extra costs.
- Preparation and Cleaning: Pipe relining work often begins with a thorough inspection and cleaning. Heavily blocked pipes or those with severe root intrusion require water jetting, clearing debris, and removing tree roots, which may add to your bill.
- Timing and Urgency: Emergency or after-hours plumbing work will usually cost more. If you plan your repairs within normal business hours, you can avoid premium charges.
- Permits and Regulations: Certain situations, like pipes beneath public land or jobs that require minor excavation, may need council permits. Securing these permits often incurs additional administrative costs.
- Materials and Method Used: High-quality resins or advanced pipe lining techniques may slightly increase initial costs but generally provide longer-lasting results, which often justifies the investment. Pipe lining is commonly used to reline pipes made from materials such as PVC pipes, providing a durable, protective layer inside the existing pipes.
When reviewing quotes, clarify what the provider includes, such as preliminary inspections, cleaning, and post-job checks. Transparent quotes help you compare providers clearly and avoid hidden charges later on.
Frequently Asked Questions
Is Pipe Relining Actually Cheaper Than Replacing Pipes?
Yes, pipe relining generally works out around 30% cheaper compared to traditional excavation methods. The key savings come from avoiding extensive landscaping, driveway repairs, or internal restoration costs. Traditional replacement jobs involving digging and rebuilding often run significantly higher, making relining a financially attractive option for most situations. However, simple jobs where the pipe is very easily accessible above ground might occasionally be cheaper to replace traditionally.
Is the CCTV Inspection Included in Pipe Relining Quotes?
Typically, relining quotes cover all necessary materials and the actual installation process. However, some providers include initial CCTV inspections and pipe cleaning within the initial fee, while others charge separately. Always confirm exactly what your quote covers, such as inspections, cleaning, junction reinstatements, or permits, to ensure a fair comparison between providers and avoid unexpected additional expenses.
How Long Does a Relined Pipe Last, Is It a Permanent Solution?
Pipe relining offers a robust and lasting solution, often accompanied by warranties of 20 to 25 years. Quality liners themselves generally have an expected lifespan of around 50 years. This means relined pipes usually provide peace of mind for decades, significantly reducing future maintenance costs. The seamless interior lining also prevents common issues like tree root intrusion and corrosion.
Can All Pipes Be Relined, or Are Some Situations Unsuitable?
Most residential pipes in Australia (whether clay, cast iron, concrete, or PVC pipe) can be relined successfully. There are, however, exceptions. Pipes that are entirely collapsed, severely crushed, or too small (under 40-50mm) might not be suitable for relining. In such cases, traditional repairs or partial replacements may be required first before any further relining is possible.
Does Relining Reduce Pipe Diameter or Affect Water Flow?
Relining slightly reduces pipe diameter by a few millimetres due to the liner’s thickness. This minor reduction is typically negligible in practical use. Interestingly, the smooth surface created by the liner often improves water flow, reducing friction compared to older pipes with rough or corroded interiors. As a result, relined pipes usually provide the same or even better water flow capacity than the original pipes.
How Long Does Relining Take, and Will It Disrupt My Home?
Most relining jobs are quick and minimally disruptive. The typical residential project usually finishes within one or two days. Since relining involves little to no excavation, there’s minimal impact on your garden or indoor flooring. During the curing phase of the liner, plumbers may ask you to restrict water use temporarily, but you can typically stay at home and carry on with daily life without significant inconvenience. This compares very favourably to traditional excavation-based replacements, which often involve substantial disruption and longer periods of inconvenience.
Key Takeaways
Here’s a quick summary of what you should keep in mind about pipe relining costs in Australia:
- Pipe relining typically costs between $3,000 and $15,000, depending on length, complexity, and access. Smaller repairs might cost around $2,000–$3,000, whereas extensive jobs can exceed $10,000.
- Average pricing for relining is approximately $400 to $1,000 per metre, with costs reducing slightly per metre for longer jobs after the initial setup charge.
- Compared to traditional excavation and pipe replacement methods, relining usually saves about 30% overall, especially considering the avoided expenses of landscaping, driveway, or internal floor repairs.
- Several factors influence cost, including pipe length, diameter, accessibility, number of bends or junctions, preliminary cleaning requirements, urgency of repairs, and type of materials or methods used.
- Relined pipes offer durable, long-term solutions, often lasting up to 50 years, with plumbers typically providing warranties of around 20–25 years.
- Most pipes in homes can be relined, although severely damaged, collapsed, or tiny-diameter pipes might not be suitable.
- Pipe relining minimally disrupts your home life, usually being completed within just a day or two with minimal excavation or disturbance.
