Drain unblocking in London typically costs between £80 and £600, with most standard residential jobs sitting in the £120–£300 range. The difference between the low end and the high end comes down to four things: how severe the blockage is, what method is needed to clear it, when you call, and which company you choose. After clearing drains across London for more than two decades, we see the same pricing patterns over and over — and the same mistakes homeowners make when comparing quotes.
Typical Drain Unblocking Prices in London (2026)
These are real-world price ranges, not inflated estimates. A straightforward blockage cleared on a weekday is at the lower end; an out-of-hours job with restricted access sits at the top.
Rodding (simple blockage, kitchen or bathroom): £80–£150 High-pressure jetting (partial or full blockage): £150–£300 CCTV inspection plus jetting (recurring or suspected structural blockage): £250–£450 Emergency out-of-hours surcharge: add £75–£150 to any of the above Excavation and pipe replacement (collapsed or root-filled pipe): £500–£3,000+
The majority of residential callouts we attend are resolved by jetting alone, without excavation. Where excavation is required, costs vary widely depending on pipe depth, ground type, and whether the work is under a path, driveway, or highway.
For a transparent breakdown of our fixed prices, see our drain unblocking cost page.
What Drives the Cost Up
Severity and Depth of the Blockage
A fresh blockage caused by a single fat deposit in a kitchen trap is usually cleared in under an hour. A blockage deep in the shared lateral — particularly in a Victorian terrace where the run extends 15–20 metres under the garden before meeting the sewer — takes considerably longer and requires more powerful equipment. The further down the pipe the blockage sits, the higher the cost.
Access Difficulty
In London's older housing stock, access to drain runs is often restricted. Manholes buried under decking, inspection chambers covered by paving, or drains accessible only through a narrow side return all add time. Properties without any inspection access require jetting from a gully or toilet, which limits what can be achieved and may require a return visit once access is restored.
Time of Day
Night, weekend, and bank holiday callouts carry a premium. Most London drain companies charge an emergency surcharge of £75–£150 on top of their standard rates. If the blockage is causing flooding or sewage backup inside the property, the surcharge is unavoidable. If the drain is slow but not yet completely blocked, calling during standard hours on a weekday is the cheapest option.
London Labour Costs
Drainage work in inner London costs more than equivalent work in the home counties or the Midlands. Parking charges, congestion zone fees, higher fuel costs, and the overall cost of operating a business in the capital all feed into the final price. A job quoted at £180 in Manchester might be £220–£250 for the same work in Hammersmith or Islington. This is not padding — it reflects the genuine cost of working in the city.
What Is Usually Included in the Price
A reputable drain company will quote you a fixed price before starting work. That price should cover:
- Labour for the attending engineer
- Use of jetting or rodding equipment
- Clearance of the blockage and basic flush-through to confirm the drain is running freely
- A verbal report on what caused the blockage and whether any further work is needed
What it typically does not include: CCTV survey footage (this is usually quoted separately if required), excavation works, hire of specialist equipment for unusual access situations, or disposal of waste where significant volumes are removed.
Always ask for a written or confirmed fixed price before the engineer starts. Avoid any company that quotes an hourly rate without a cap — this leads to unexpected bills.
How to Avoid Overpaying
Get an itemised quote upfront. Any reputable company can give you a fixed price over the phone for a standard blockage once you describe the symptoms. If they will only quote by the hour, look elsewhere.
Avoid emergency call-outs for non-emergencies. If the drain is slow but not fully blocked and there is no risk of flooding, call during standard hours. You can save £75–£150 on the surcharge alone.
Be wary of automatic CCTV upselling. Some companies quote a low price to clear the blockage, then push a CCTV survey on every job regardless of whether it is warranted. A CCTV survey is genuinely useful for recurring blockages, older properties, or where a structural cause is suspected — but it is not required after every routine kitchen drain clearance.
Check reviews for London-specific experience. A company with strong reviews in your specific borough understands the local drainage network, the typical pipe age and condition, and how to navigate access challenges common to your area.
When a Higher Price Is Worth It
Sometimes the more expensive option is the right one. If your drain blocks repeatedly — three or more times in two years — paying for a CCTV survey alongside the jetting is almost always money well spent. Rodding clears the blockage but does nothing to address a cracked pipe, root infiltration, or collapsed joint underneath. Fixing the cause once costs far less than paying to clear the symptom repeatedly.
Similarly, if you are buying a London property, spending £150–£350 on a pre-purchase drain survey can identify defects that would cost thousands to repair after exchange. See our full guide to drain unblocking in London for more on what to look for.
For a complete picture of how London drains block so often and why Victorian infrastructure keeps tradespeople busy across the capital, that article covers the underlying causes in detail.
Frequently Asked Questions
Why do London drain unblocking prices vary so much?
Several factors drive variation: blockage severity, pipe depth, access, equipment needed, time of day, and the pricing model the company uses. A fixed-price company quoting for a simple kitchen blockage will come in far cheaper than a day-rate company attending an emergency. Get a specific fixed quote before approving any work.
Is an emergency callout always more expensive?
Yes — out-of-hours callouts carry a surcharge of roughly £75–£150 above standard rates. If the situation is a slow drain rather than active flooding or sewage backup, it is worth waiting until standard hours to make the call. If there is active internal flooding, pay the surcharge and get it resolved immediately.
Should I pay extra for a CCTV survey with drain unblocking?
Not routinely. A CCTV survey adds real value when the blockage is recurring, when a structural cause is suspected, or when the property is older than 50 years and has never been surveyed. For a straightforward first blockage in a newer property, clearing and monitoring is a reasonable first step.
Can I get drain unblocking on home insurance?
Some home insurance policies include drain cover, usually under an "underground services" or "home emergency" section. Check your policy documents before calling a tradesperson — if you are covered, the insurer will arrange and pay for the callout. Policies vary widely; many cover private drains only and exclude shared sewers.
How quickly can you attend in London?
We cover all 32 London boroughs with a typical response of 60–90 minutes, 24 hours a day, 365 days a year. Call 0204 593 7845 for immediate attendance.