Drain Repair Costs in the UK: What to Expect

By Josh Rickard June 16, 2026blog

TL;DR: Drain repair cost in the UK ranges from around £100 for a simple blockage clearance to more than £5,000 for a collapsed pipe requiring excavation. The method matters most: no-dig relining is far cheaper than digging. A CCTV survey is usually the first step, and it costs far less than guessing wrong. This guide explains what drives the price and how to avoid overpaying.

Drain repair cost is one of those figures that varies so much it’s almost useless without context. Ask five contractors for a quote with no diagnosis and you’ll get five very different numbers, none of them reliable.

The reason is simple. “Drain repair” covers everything from a minor blockage cleared in 30 minutes to a collapsed sewer requiring days of excavation and reinstatement. A patch repair on a cracked joint costs a fraction of what a full pipe replacement does. And the same damage costs more to fix under a driveway than under a lawn.

This guide cuts through the noise. It explains the main repair types, the cost ranges you should realistically expect, and the factors that push prices up or down. It also explains when a CCTV Drain Survey pays for itself before any repair work begins.

Cornwall adds its own layer of complexity. Clay pipe systems, granite subsoils, high water tables, and the sheer number of period properties mean drainage problems here often need a more considered approach than a quick jet and hope.

Here’s what this post covers: repair types and their typical costs, what drives the price, when to choose no-dig relining over excavation, and what to look for in a fair quote.

What Is the Average Drain Repair Cost in the UK?

Most residential drain repairs in the UK cost somewhere between £150 and £3,000. That range is wide because drain repair covers very different types of work, from a localised patch on a cracked joint to a full excavation and pipe replacement.

Published cost data shows drain lining at roughly £70 to £130 per metre for a 100mm pipe, and £120 to £170 per metre for a 150mm pipe. Collapsed drain repairs can start at around £375 for a very localised repair and rise significantly depending on how much pipe needs work.

For a practical starting point, here are typical costs by repair type:

• Drain unblocking (jetting): Around £100 on average for drain unblocking or jetting.
• Patch repair (no-dig): From approximately £350 to £500 for a localised resin patch applied from inside the pipe to seal a crack, displaced joint, or small hole, with no excavation needed.
• Full drain relining (no-dig): £80 to £150 or more per metre. A continuous resin liner is installed inside the existing pipe, creating a new pipe within the old one, and priced per metre based on survey findings.
• Excavation and replacement: £1,000 to £5,000 or more. Price depends on depth, surface type, and the length of the damaged section.
• CCTV Drain Survey (pre-repair diagnosis): Typically £120 to £350 for a domestic survey, though the full range runs from £85 to £500 or more depending on scope.

These are UK-wide averages. Prices in Cornwall and Devon are generally in line with South West averages, though access difficulties on rural sites or narrow coastal plots can add to labour costs.

What Factors Push Drain Repair Costs Up or Down?

The type of damage is the biggest single cost driver, but several other factors affect the final price significantly.

The nature of the drain issue is arguably the most significant cost driver. A simple blockage caused by hair in a shower drain costs considerably less to clear than a collapsed underground pipe requiring excavation.

The other main variables are:

Depth and access. Deeper drains require more digging and shoring. Each additional metre of depth can add £200 to £500 to labour costs.

Pipe material. The material of the pipe affects how easy it is to repair. Modern plastic pipes are often easier and cheaper to patch, reline, or replace than older clay or cast iron drains. Older materials can be more brittle, harder to cut, and more likely to require a larger section to be replaced. This matters in Cornwall, where clay pipe systems are common in older housing stock.

Surface type above the drain. If repairs involve breaking through driveways, patios, or landscaping, reinstatement adds further expense, typically £300 to £1,500 depending on surface type and area.

Location within the UK. London and the South East are often 10 to 25% higher than areas such as the South West, Midlands, and North. Cornwall and Devon sit within a more competitive pricing band.

Emergency vs. planned work. Emergency call-outs typically incur higher rates due to the immediate availability of technicians and equipment. Planned, non-urgent repairs scheduled during regular hours usually result in lower charges.

The practical upshot: a drain under a patio in an older clay pipe system, needed urgently, will cost more than the same fault under a lawn in a modern plastic system planned during working hours.

Do You Always Need a CCTV Survey Before Repairs?

Not always, but skipping it often costs more in the long run. A CCTV Drain Survey tells you exactly what is wrong, where, and how bad it is. Without that diagnosis, any quote is based on assumption.

A CCTV drain inspection usually costs £100 to £250 but can save money by avoiding unnecessary excavation.

There are situations where a survey before repair is particularly valuable:

• Recurring blockages that keep coming back after clearing
• Any repair quote that involves significant excavation
• Pre-purchase property checks where drainage condition is unknown
• Older properties, particularly those built before the 1980s, where clay or pitch fibre pipes may be present
• Any site where a wrong call means digging up a driveway or patio

A standard CCTV survey typically costs £100 to £300 and covers the main drainage runs. A pre-purchase or homebuyer survey, which includes a formal report, runs from £150 to £400. Full site surveys with GPS mapping, used for larger properties or development work, cost £300 to £1,000 or more.

Clear Stream’s CCTV drain surveys provide a full written report with footage, so you know exactly what you are paying to fix before any repair begins. No call-out fee, fixed-price quote based on what the camera finds.

No-Dig Relining vs Excavation: Which Costs Less?

No-dig relining is almost always cheaper than excavation when the pipe still has enough structural integrity to accept a liner. The savings come from avoiding the costs of digging, surface reinstatement, and the longer labour time that traditional repairs require.

Drain relining (also called CIPP, Cured In Place Pipe) involves inserting a flexible liner impregnated with resin into the damaged pipe. The liner is inflated against the pipe walls and cured using UV light or ambient heat. Once set, it forms a smooth, jointless new pipe inside the old one, with no digging and no disruption to your garden, driveway, or patio.

Here is a cost comparison for typical residential jobs:

For a single displaced joint, a patch repair costs roughly £350 to £500, compared to £1,500 to £2,500 via excavation including reinstatement. For a 3-metre collapsed section, full relining typically costs £500 to £800, compared to £2,000 to £4,000 via excavation depending on depth and surface. For root damage across 10 or more metres, full relining usually runs £1,000 to £1,500, while excavation can cost £4,000 to £8,000 or more.

Relining does have limits. Severe deformation or large holes may rule out relining. Sufficient access points are also required to feed the liner in and inflate it properly.

Drain relining is usually the cheapest professional option when the pipe is damaged but still structurally suitable for lining, while excavation is needed for fully collapsed sections.

A CCTV survey is what tells you which option applies to your specific pipe. That is why the survey and the repair decision cannot sensibly be separated. Clear Stream’s Drain Pipe Relining service in Cornwall always starts with a camera inspection before any repair price is agreed.

When Does a Blocked Drain Become a More Expensive Repair Problem?

A blockage clears for around £100. A collapsed drain costs many times more. The question is whether the blockage is the problem, or just the symptom of something structural underneath.

Blockages caused by build-up of grease, food waste, or wet wipes are usually the whole problem. Clear them and the drain works normally again. But some blockages happen because the pipe has cracked, shifted, or partially collapsed, creating a ledge where debris collects. Clear the blockage without finding the root cause, and it comes back.

Signs that a blockage may indicate a deeper structural problem include:

• The same drain blocks repeatedly within weeks or months of being cleared
• Multiple drains backing up at the same time
• Wet patches in the garden above where drainage pipes run
• Subsidence or sinking around the drain route
• Sewage odours from ground level, not from the drain opening itself

If you leave damaged pipes to get worse, you may have to replace them entirely, which can cost significantly more than relining would have. Relining can often save hundreds of pounds per metre compared to full replacement.

If your drain blocks repeatedly, the blocked drains service from Clear Stream includes a diagnostic assessment, not just a clearance. The team uses High-Pressure Jetting to clear the blockage and can identify whether a camera survey is needed before the job is closed.

What Should a Fair Drain Repair Quote Include?

A quote that arrives without a diagnosis is not really a quote. It is an estimate, and estimates can change substantially once work begins.

A fair, transparent drain repair quote should include:

1. Pre-repair inspection. Either a CCTV survey report or, at minimum, a visual inspection with access. The quote should be based on what was found, not what is assumed.
2. A fixed price, not an hourly rate. Hourly rates with no ceiling create uncertainty. A fixed-price quote means you know the total before work starts.
3. Written scope of works. What is being repaired, what method will be used, and what the finished result will include (post-repair camera check, for example).
4. Confirmation of any materials warranty. Drain relining materials from reputable manufacturers carry long service life expectations. Ask what the liner is warranted for.
5. Reinstatement included or itemised. If excavation is involved, the quote should specify whether surface reinstatement is included or priced separately.
6. No call-out fee confirmed upfront. Some contractors charge just for coming to look. The better ones do not.

Clear Stream operates on a fixed-price, no call-out fee basis across Cornwall and Devon. You get a firm price before any work begins, based on what the camera or inspection actually shows, not a ballpark that grows once the ground is open.

How Clear Stream Handles Drain Repair Diagnosis and Pricing

Clear Stream’s approach is to diagnose before quoting. That sequence matters because it produces a price you can rely on, not a figure that shifts when the real problem is found.

The process for most repair jobs runs as follows:

1. Call out. Engineers arrive within 1 to 2 hours anywhere in Cornwall and Devon. No call-out fee applies.
2. Inspection. For any repair beyond a simple blockage, a CCTV Drain Survey identifies exactly what has failed and where. The camera footage becomes part of the record.
3. Fixed-price quote. Based on the survey findings, you receive a clear written price before any repair work starts.
4. Repair. Depending on the survey result, the team will use the most appropriate method. That might be High-Pressure Jetting for a straightforward blockage, a resin patch for an isolated joint defect, full Drain Pipe Relining for a longer damaged run, or excavation and replacement for a fully collapsed section.
5. Post-repair verification. A camera check after relining confirms the repair is sealed and structurally sound.

All repair work carries a 5-Year Guarantee. The service covers residential, commercial, and landlord properties across all Cornwall coverage areas including Truro, Falmouth, Newquay, St Austell, Bodmin, Penzance, and the full Devon border.

Cornwall’s granite bedrock and clay subsoils make accurate pre-repair diagnosis even more important than in areas with simpler ground conditions. The cost of a camera survey is a small fraction of the cost of digging in the wrong place.

Conclusion

Drain repair cost in the UK is not a single number. It is a range shaped by what is wrong, where it sits, how accessible it is, and which repair method suits it. A blocked drain that clears cleanly costs a fraction of a collapsed pipe that needs excavation. Knowing which you have before work starts is the difference between a controlled cost and an open-ended one.

The key takeaways:

• Get a diagnosis before any quote. A CCTV survey costs far less than a repair based on guesswork.
• No-dig relining is almost always cheaper than excavation when the pipe can accept it.
• Fixed-price quotes protect you. Hourly rates without a ceiling do not.

If you have a drainage issue in Cornwall or Devon, Clear Stream Drainage Solutions provides a free, fixed-price quote based on what the camera actually finds. No call-out fee, 1 to 2 hour response, and a 5-Year Guarantee on all repair work.

Call the team now on 01872 222555 or visit clearstreamdrainage.co.uk to book a survey or request a quote.

Frequently Asked Questions

How much does it cost to fix a blocked drain in the UK?

Clearing a blocked drain typically costs around £100 for a standard jetting job on a residential property. More stubborn blockages caused by root ingress or heavy grease build-up may cost more, particularly if the line needs repeated attention or a camera inspection to locate the exact problem. Emergency call-outs outside standard hours can also carry a premium.

Is drain relining worth the money compared to replacement?

In most cases, yes. Drain relining avoids excavation costs, surface reinstatement, and the longer labour time of traditional pipe replacement. For a single displaced joint, relining can cost roughly £350 to £500 versus £1,500 to £2,500 for excavation covering the same fault. The main exception is when a pipe has fully collapsed and lost its shape, in which case relining is not possible and excavation is the only option.

Do I need a CCTV survey before a drain repair?

Not for every job. A straightforward blockage that clears cleanly may not need one. But for any repair that involves structural work, relining, or excavation, a CCTV survey is the only reliable way to confirm what is wrong and where. Without it, any quote is based on assumption and can change once work begins. A survey typically costs £100 to £350 for a domestic property and usually saves far more than it costs by targeting the repair correctly.

Does home insurance cover drain repairs?

Buildings insurance policies vary considerably. Some cover sudden, accidental damage to underground drainage. Most do not cover wear and tear, gradual deterioration, or blockages caused by misuse. Drainage that has cracked through age or root ingress is often excluded. Check your policy wording carefully, and if a survey report documents the damage, it strengthens any claim you do submit.

How long does drain repair take?

It depends on the repair method. High-Pressure Jetting to clear a blockage usually takes one to two hours. A patch repair or short reline can often be completed in a single day. Full relining of a longer run may take a day or two depending on length and access. Excavation jobs take longer, particularly if the pipe is deep or the surface above it needs careful reinstatement. Your engineer should give you a realistic timeframe with the fixed-price quote.

What is the difference between drain relining and drain replacement?

Drain relining is a no-dig repair: a resin-impregnated liner is inserted into the existing pipe and cured in place, forming a new pipe inside the old one. No excavation is required and most jobs complete in a day. Drain replacement involves digging down to the damaged pipe, removing it, and installing new pipework in its place. Replacement is necessary when a pipe has fully collapsed or is so badly deformed that no liner can be installed. Relining is generally cheaper, faster, and less disruptive when the pipe condition allows it.