House hunters check the roof, the windows, the boiler, and sometimes even the electrics. Yet almost nobody asks what's happening underground. A drainage system that's quietly failing won't show up on a standard homebuyer's report. By the time it becomes obvious, you already own the problem.
What a CCTV drain survey actually involves
The engineer feeds a small, waterproof camera through the drainage system. It goes in through existing access points, such as manholes or inspection chambers. It records footage of the pipe's internal condition the whole way through. Nothing gets dug up or disturbed in the process.
Why a standard survey misses this entirely
Homebuyer and even full building surveys only cover what's visible and accessible. Drains run underground, out of sight. There's often no obvious symptom above ground, such as damp, subsidence, or a bad smell. Since nothing stands out, a surveyor has no reason to flag anything.
What actually turns up on these surveys
**Root intrusion.** Tree roots grow toward moisture, since a drain is a reliable source of it. Roots can force their way into joints and small cracks. What starts as a minor intrusion can eventually block the pipe or crack it further.
**Cracked or collapsed sections.** Since clay and pitch-fibre pipes were standard for decades, they do deteriorate over time. A survey shows exactly where, and how badly.
**Displaced joints.** Ground movement or heavy traffic vibration can pull joints apart slightly. This lets waste seep into the surrounding soil, which can contribute to subsidence over time.
**Incorrect connections.** Older properties sometimes wrongly connect surface water into the foul sewer, or vice versa. That's a compliance issue, and putting it right can carry real cost.
**Buildup with no structural fault.** Even where the pipe itself is sound, heavy accumulation can build up inside it. However, it's worth knowing about before you move in, rather than discovering it the hard way.
Why the cost of skipping this can be so high
Drain repairs get expensive fast once excavation gets involved. Digging up a driveway or garden costs far more than clearing a simple blockage. What decides the cost is usually timing. Either the problem gets caught early, or it's found by accident after it fails.
A pre-purchase survey costs much less by comparison, and the price is fixed. Since it's also the only reliable way to know which scenario you're walking into, it's worth doing before you exchange contracts.
What you can do with the results
If a survey turns something up, you're not stuck. You can ask the seller to fix it before completion, or negotiate the price down. Alternatively, go ahead with your eyes open and budget for the repair. Either way, a clear survey report is solid evidence for the talk with the seller or their agent.
What a good survey should include
A proper report gives you full HD footage, a clear summary of the findings, and honest recommendations. It shouldn't feel like a hard sell on repairs you don't need. Ask upfront whether you can keep a copy of the footage.
We provide pre-purchase drain surveys across Exeter and the surrounding area. If a survey does turn something up, our drain repairs service can quote for putting it right. That includes pipe relining and drain excavation. It might turn out to be a hidden leak instead, not a drainage fault. If so, our leak detection service finds it without unnecessary digging. See how to tell a blocked drain from a burst pipe if you're not sure which you've found.
Book a CCTV drain survey before you exchange contracts — contact us online.
Areas we cover
- Drain Unblocking in Exeter
- Topsham
- Emergency Drain Services in Topsham
- CCTV Drain Surveys in Exmouth
- Blocked Drains in Crediton
- Drain Repairs in Crediton
- Drain Jetting in Tiverton
- Drain Unblocking in Honiton
- Sidmouth
- Emergency Drain Services in Sidmouth
- CCTV Drain Surveys in Dawlish
- Blocked Drains in Newton Abbot
- Drain Repairs in Newton Abbot
