Do I Need a CCTV Drain Survey | When It's Worth It
A drainage engineer's honest take on when a CCTV survey earns its money and when it's an unnecessary add-on to a simple blockage job.
A CCTV drain survey costs between £150 and £350 for a typical residential line in Solihull. That's a reasonable spend when the camera answers a question you genuinely need answered. It's a waste when someone's selling it to you after clearing a one-off blockage of wet wipes.
I run the camera every working day. Here's when I'd tell a friend to book one, and when I'd tell them not to bother.
When a survey actually earns its money
Repeat blockages. If your drain has blocked twice in 18 months, jetting it again is treating the symptom. The camera shows why it keeps blocking. I've pulled the head out of drains in Shirley and Olton to find a classic belly, a low sag where grease pools regardless of how well you flush the pipe. You can't feel that from the surface. A displacement or a partial collapse at a joint looks identical from above to a fat blockage. The repair is completely different.
Pre-purchase surveys. This is the one I'd never skip. A house in Knowle or Dorridge with mature oaks on the boundary and a 1960s clay lateral is asking for root ingress. The estate agent won't mention it. The vendor probably doesn't know. A pre-purchase CCTV survey, typically £180 to £250 for a residential property up to B94, gives you either peace of mind or a negotiating point before you exchange. I've seen buyers in Balsall Common save several times the survey cost by flagging a collapsed section before completion.
Build-over agreements. Building close to or over an existing drain requires a CCTV condition survey before and after the work. Severn Trent and the Building Regulations both want it. Not optional.
Subsidence near a drain. A crack appearing in a wall or a sunken patio near where a drain runs is not always a drain problem, but you need to rule it out. Leaking joints wash fine material away from below a slab over years. The camera either confirms or clears the drain as a cause.
Insurance claims. If a loss adjuster is involved, photographic or video evidence from inside the pipe carries weight that a verbal description from an engineer does not.
When you're probably being upsold
A first-time blockage, cleared cleanly by high-pressure water jetting, with no history of repeat problems and no structural concerns near the drain. That's it. If the line jets clear, runs freely and you've no reason to suspect underlying damage, a camera adds nothing. I won't pretend otherwise.
Some companies quote a survey as standard on every call-out. I understand the business logic. I don't agree with it.
A quick reference
| Situation | Survey needed? |
|---|---|
| First blockage, jetting resolves it | No |
| Second blockage within two years | Yes |
| Pre-purchase, any age of property | Yes |
| Build-over agreement required | Yes |
| Subsidence or sinkhole near a drain | Yes |
| Insurance claim for drain damage | Yes |
| Slow drain, no blockage history | Probably not, try jetting first |
What the survey actually gives you
A written condition report and a copy of the footage. The report should state the WRc defect codes, the pipe material, diameter and depth at key points, and a recommended action. If a contractor gives you a verbal summary and no footage, that's not a survey. That's a guess with a camera attached.
If the camera finds nothing, that's a result too. I'd rather charge someone in Dickens Heath £200 to confirm their drains are fine than have them spend £3,000 on a reline they didn't need because a report was vague enough to justify it.
Drainsco covers Solihull and the surrounding B postcodes. Engineers are on call 24/7, there's no call-out fee, and you'll have a fixed price before we start. If you're not sure whether a survey is the right call for your situation, phone and ask. I'd rather talk you out of spending money you don't need to spend than book a job that doesn't serve you.
Priya Nair, CCTV survey and diagnosis specialist
Priya is the one who reads the camera footage. She handles the survey work, the pre-purchase reports and the build-over enquiries, and she will happily explain why a drain that keeps blocking almost always has a cause worth finding rather than a clear-out worth repeating.
Blocked drain in Solihull?
Engineers on call 24/7. A clear price before we lift a cover, and no call-out fee.
0121 816 1938