Drain unblocking Cost Calculator
Clearing a blocked drain costs £80–£250 for most call-outs, a CCTV survey £90–£350 and high-pressure jetting £150–£400. The first question is free: a blockage past your boundary in a shared sewer is usually the water company's job, not yours.
Open the calculator →Price drain unblocking in 30 seconds
2 steps, using the figures from our cost guide.
How this calculator works
Every figure in this calculator is the one published in the cost table on our drain unblocking guide. Pick the option that matches your job and the calculator returns that published range, adjusted for your region - it does not model anything the guide does not already say.
That is deliberate. A calculator whose rates drift from the page it sits under is worse than no calculator, because two numbers on the same site disagree.
What it cannot know: access, the condition of what is already there, and anything structural. Those are what separate three real quotes from each other.
Published drain unblocking costs (2026)
| Option | Typical 2026 cost | Notes |
|---|---|---|
| Rodding a simple blockage | £80–£180 | |
| High-pressure jetting | £150–£400 | |
| CCTV drain survey | £90–£350 | |
| Patch lining a cracked section | £300–£900 | |
| Excavated drain repair | £600–£2,500 | |
| Root cutting | £200–£500 |
These are the figures from our drain unblocking cost guide.
Drain unblocking calculator — FAQs
Around £80–£250 for a standard daytime call-out with rods, and £150–£400 if it needs high-pressure jetting. Out-of-hours emergency rates run 50–100% higher.
You own the drains inside your boundary that serve only your home. Lateral drains beyond the boundary and sewers shared with neighbours have belonged to the water company since 2011 - report those to them, free.
For a recurring blockage, yes - £90–£350 to find out whether the cause is habit or a defect. Buyers also use them on older houses before exchange, and insurers ask for the footage on subsidence-adjacent claims.
Buildings insurance usually covers accidental damage to underground services for the section you own; wear and tear and blockages themselves are usually excluded. Home emergency add-ons often cover the unblocking call-out.
Related cost guides
- Drain unblocking cost guide — The full price guide
- All plumbing services — Browse the hub
- All BestBuilders services — Every trade we cover
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