When a drain blocks once, you clear it. When it blocks again and again, clearing it is just treating the symptom - something underground is causing it, and until you can see what, you're paying to fix the same problem on repeat. A CCTV drain survey sends a camera down the pipe so a drainage engineer can see exactly what's wrong: a collapse, tree roots, a displaced joint or a build-up. It turns guesswork and speculative digging into a precise, costed plan.
A standalone CCTV drain survey is usually £100-£250. Many firms credit the cost against the repair if you go ahead with them, so it often effectively pays for itself.
Typical UK Prices
Price depends on how much of the system is surveyed and whether you need a formal written report - a quick look to find one blockage is cheaper than a full pre-purchase survey with mapping.
| Job | Typical price |
|---|---|
| Standard CCTV drain survey | £100-£250 |
| Pre-purchase / homebuyer survey | £150-£350 |
| Survey combined with jetting | £200-£450 |
| Survey with written report & drain map | £200-£400 |
What a Drain Survey Actually Involves
It's quicker and less invasive than people expect - no digging, and usually done in an hour or two from an existing manhole or access point.
The engineer lifts a manhole cover or uses an inspection point - no excavation needed.
A waterproof camera on a flexible rod is pushed through the pipework, sending live footage back to a screen.
Using a sonde, they pinpoint the exact depth and position of any fault from above ground.
You get the footage and, if requested, a written report grading the condition and recommending repairs.
When You Genuinely Need One
- A drain blocks repeatedly no matter how often it's cleared
- Slow drainage across several fittings at once
- Sinkholes, soft patches, or foul smells in the garden
- You're buying a house and want to know the drains aren't a hidden liability
- An insurance claim or a neighbour dispute needs documented evidence
Buying a House? Why a Survey Pays for Itself
Drains almost never appear on a standard homebuyer's survey, yet a collapsed or root-damaged drain can cost thousands to put right - and once you've bought the house, that bill is entirely yours. For the price of a tank of fuel, a pre-purchase drain survey either gives you peace of mind or hands you a concrete reason to renegotiate. On an older property, or one with big trees near the boundary, it's some of the best-value money you can spend before exchange.
What the Camera Can Find
- A simple blockage
- Fat, wipes or silt - jetting clears it on the spot, and you've confirmed there's nothing structural behind it.
- Tree roots
- Roots find their way in through joints chasing water. They're cut out and the entry point sealed or relined.
- Displaced or cracked joints
- Ground movement opens gaps that snag debris. A localised patch repair fixes the exact spot.
- A full collapse
- The worst case, but the survey pinpoints it so excavation is targeted to a metre of pipe, not the whole run.
Who Pays for the Repair?
Before you agree to any repair, find out whose drain it actually is - it can save you a four-figure bill. A drain that only serves your property, inside your boundary, is yours. But a shared or lateral drain that serves more than one home, or runs beyond your boundary, is usually the water company's responsibility to repair, often at no cost to you.
- Inside your boundary, serving only your home - your responsibility
- Shared with neighbours or beyond your boundary - usually the water company's
- Storm or ground-movement damage may be covered by buildings insurance
- Ask the engineer to confirm whose drain it is before you authorise work
For everyday clearing prices, see the blocked drain cost guide, and the emergency plumber cost guide for call-out rates. Drains backing up into the house right now? Get an emergency plumber on the way on the way.