Last Updated on September 17, 2026
A blocked drain typically costs £75 to £150 to rod and £120 to £250 to jet. Check whose drain it is first: since October 2011, shared drains and pipes beyond your property boundary belong to the water company, so clearing those is usually free.
Checked on 11 September 2026.
Most people ring a drainage firm the moment the toilet backs up. That is often the right call. But a large share of blockages sit in pipes the householder does not own, and the water company clears those at no direct charge. Establishing whose pipe it is takes two minutes and can save the whole bill.
Whose drain is it? The free option comes first
On 1 October 2011, responsibility for private sewers and lateral drains in England and Wales transferred to the water and sewerage companies (gov.uk announcement). The practical rules, as set out by South West Water and mirrored by the other companies:
- Your drain: a pipe serving only your property, inside your boundary. Yours to unblock, at your cost.
- Lateral drain: the same pipe once it crosses your boundary. The water company’s responsibility.
- Sewer: any pipe carrying waste from more than one property, including a shared run between neighbouring houses. The water company’s responsibility, even where it runs under your garden.
So if the blockage affects you and a neighbour, or sits beyond your boundary, phone your water company before any drainage firm. They will investigate, and clearing their own pipes carries no call-out bill. Scotland has separate arrangements through Scottish Water, so check with them directly.
Only when the blockage is in your own pipe, on your own land, are you paying a private firm.
What unblocking costs
Two large published cost guides were checked live on 11 September 2026. Neither states whether its figures include VAT, so treat them as indicative and confirm the VAT position when you get a quote.
| Job | Checkatrade (June 2026) | MyBuilder (August 2026) |
|---|---|---|
| Standard call-out fee | £60 | £55 to £60 |
| Sink, toilet or bath unblocked | £60 | £50 to £70 |
| Drain rodding | £75 to £150 | £75 to £150 |
| High-pressure jetting | £120 to £250 | £100 to £250 |
| Rodding and jetting combined | £180 to £400 | £180 to £400 |
| Emergency call-out | £180 | £100 to £180 |
| Day rate, drainage specialist | £250 to £300 | hourly £60 to £100 |
A simple external blockage, rodded in under an hour, sits at the bottom of the range. A compacted blockage needing jetting, or one with poor access, sits at the top.
Call-out fee, fixed price or hourly
Drainage firms price in three ways, and it matters which one you are agreeing to.
- Fixed price for the job. Best for you. The firm carries the risk of the job running long. Ask what happens if the first method fails.
- Call-out fee plus labour. Common. The £55 to £60 call-out usually covers travel and the first inspection, then rodding or jetting is charged on top. Ask whether the call-out fee is deducted if you go ahead.
- Hourly. MyBuilder lists £60 to £100 per hour. Fine for a known small job, risky for anything that might drag. Agree a cap.
Out of hours expect a premium. Both guides put emergency call-outs at £100 to £180 before any work starts, roughly two to three times the standard fee. If the water is draining slowly rather than flooding, waiting until morning is usually the cheaper decision.
“No fix, no fee” sounds like a guarantee but read it as a pricing structure. It usually means no charge if their standard method fails, not free work of any kind. Firms offering it price the fix higher to cover the misses, and “fix” can be defined narrowly (cleared today, not cleared permanently). Ask exactly what counts as a fix before agreeing.
VAT. A VAT-registered firm must add 20% to consumer quotes unless the price is stated as VAT-inclusive. Smaller sole traders under the registration threshold charge no VAT at all, which partly explains why quotes for the same job can differ by a fifth. Always ask whether a quote includes VAT.
CCTV surveys are a separate spend
If a firm cannot clear the blockage, or it keeps returning, the next step is usually a camera survey, at roughly £90 to £300 on the published guides. That is a diagnostic product with its own pricing games, and Whito is publishing a separate guide to CCTV drain survey costs, so this page will not go further into it.
Two-minute quote check
Before you accept any price:
- Check whose drain it is. Shared pipe, or blockage beyond your boundary? Phone the water company first. This step alone can take the bill to zero.
- Ask what the price includes. Call-out, first hour, rodding, jetting? Get the total for the likely method, not the teaser figure.
- Ask about VAT. Is the figure inclusive? If the firm is not VAT-registered, the quote should say so.
- Ask what happens if rodding fails. Get the jetting price now, not after the rods are out of the van.
- Get a second price for anything over £250. For non-emergencies, two phone quotes take ten minutes and regularly differ by £100 or more.
For drainage firms: what to publish
Customers ringing three firms pick the one whose pricing they can see. Publish on your own site:
- Your standard call-out fee and what it covers.
- A from-price for rodding and for jetting, stating clearly whether it includes VAT.
- Your out-of-hours premium, as a number.
- A plain line telling customers that shared drains and pipes beyond the boundary are the water company’s job. It costs you a few small jobs and buys trust for the larger ones.
- If you hold accreditations (WRc-approved, WaterSafe, trade body membership), name them with the membership number so they can be checked.
That is one page of honest numbers. It converts better than “competitive rates”.
Red flags
- Quoted £80, then an excavation pitch. The classic upsell: a cheap unblock reveals “collapsed pipework” needing £1,500 or more of digging. Never agree to excavation on the day. Get the CCTV footage on a stick, get a second opinion, and check whether the damaged section is the water company’s pipe anyway.
- A firm that never asks whose drain it is. A reputable drainage engineer establishes responsibility first. One that starts work on a shared sewer without mentioning the water company is charging you for something you could have had free.
- Vague emergency pricing. “We’ll see when we get there” at 11pm is how a £180 call-out becomes a £600 invoice. Get a figure on the phone.
- Pressure to decide immediately. Blocked drains are unpleasant, rarely urgent. Slow draining can wait a day for a second quote.
- No address, no landline, brand-new website. National-looking lead sites often sell your call to whoever pays, at a marked-up rate.
What this page does not cover
Drain repairs, relining and excavation, which are a different cost category (relining alone is listed at £85 to £150 per metre). CCTV survey pricing in detail. Septic tanks and private treatment plants. Commercial drainage contracts. Scotland-specific responsibility rules, which sit with Scottish Water.
Method and limits
Price figures come from the two published cost guides linked below, both checked live on 11 September 2026 (Checkatrade’s guide dated June 2026, MyBuilder’s dated 21 August 2026). Neither guide states its VAT basis, so all figures are indicative rather than quotes. The responsibility rules come from the gov.uk announcement of the 1 October 2011 transfer and South West Water’s published guidance; other companies in England and Wales operate under the same transfer. No drainage firm paid to appear here, and none can.
Sources
- gov.uk: Water customers no longer liable for sewerage repairs. The 1 October 2011 transfer of private sewers and lateral drains to water and sewerage companies.
- South West Water: sewer responsibility. Definitions of drain, lateral drain and sewer, and free investigation of sewerage problems.
- Checkatrade: drain unblocking cost guide. Benchmark prices for rodding, jetting, call-outs and surveys, updated June 2026.
- MyBuilder: drain unblocking cost guide. Benchmark prices and hourly rates, updated 21 August 2026.
Related Whito research: UK Drainage Statistics 2026, every checkable drainage figure in one place.
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