A CCTV drainage survey — a camera run through the actual pipework, rather than a visual look at what's reachable from the surface — typically costs £90–£450 in 2026. A quick look-and-see run to confirm a suspected blockage sits at the bottom of that range; a full pre-purchase survey that maps the whole system and grades any defects sits nearer the top. That's the figure most people search for, and it isn't really the one worth dwelling on.
What actually decides whether a drainage survey is worth commissioning is what's likely to be lying under an older property that nobody's looked at in decades — pitch-fibre or unlined clay pipework, root ingress from a tree planted long before anyone thought about it, a joint that's slowly displaced, a section that's already partially collapsed. None of that shows up on a standard building survey, which only inspects drainage visually at accessible manhole covers. Find it before you exchange contracts and it's a negotiating point. Find it two years later, when the garden starts flooding after heavy rain, and it's entirely your bill.
I'm a building surveyor, not a drainage contractor, so I don't run a camera down a drain myself. What follows is 2026 pricing cross-checked against current UK drainage firms' published rates, what actually drives the cost, why older houses are the property type most likely to need one, and how a CCTV survey differs from the drainage search your conveyancer has probably already ordered.
The short answer
Figures below were checked on 25 August 2026 against several current UK drainage specialists' 2026 price guides, cross-referenced against each other. As with the rest of this series, London and the South East — my own patch included — trend above the national figures quoted here.
| Scenario | Typical cost (2026) | What's included |
|---|---|---|
| Basic look-and-see check | £90–£150 | Single camera run to confirm a suspected blockage, no written report |
| Full survey with written report | £150–£350 | Whole-run inspection, video footage, defect log |
| Pre-purchase / homebuyer survey | £250–£450 | Full system surveyed and mapped, condition graded, written report to inform negotiation |
| Larger, older or complex property | £350–£500+ | Longer runs, several access points, higher chance of a genuine defect |
Those figures assume the drain run is already reasonably clear and accessible. If the line needs jetting before the camera can pass through, add roughly £100–£150; if an access point has to be located and dug out because there's no visible manhole, add £100–£300 on top. Worth noting separately: the CON29DW drainage and water search your conveyancer normally orders as part of the standard search pack costs £45–£100 and is a different product entirely, covered further down.
What drives the price
Length and number of runs. You're paying largely for time on site, and a longer or branching drainage run with several sections to camera simply takes longer than a single short run to one manhole.
Access. A property with clearly marked, reachable manholes is a straightforward job. One where the inspection chamber has been paved, decked or grassed over — common on older houses that have been extended or landscaped since the drains went in — needs locating and often digging out first.
Whether the line needs clearing first. A camera can't pass through standing water or a genuine blockage, so a survey ordered because something's already wrong usually needs jetting beforehand, priced separately from the survey itself.
Depth of reporting. A verbal opinion and a short note costs less than a full written report with footage, a plan of the system and each defect graded against a recognised condition scale — the level of detail a solicitor or a lender actually wants to see if the survey is being used to inform a purchase.
Region. London and the South East commonly run above the national figures quoted here, in line with most trades in this series, driven by labour rates and a higher proportion of older, more complex drainage layouts.
Do you actually need one — especially on an older house
A RICS Level 2 HomeBuyer Report or Level 3 Building Survey inspects drainage visually, at whatever's reachable from ground level and through an accessible manhole cover if one's lifted. That's a genuinely useful check, but it's a look, not an inspection of the pipe itself — a surveyor standing over an open manhole simply can't see whether the pipe thirty metres away, running under next door's patio, has a root growing through a joint. Covered in full in house survey cost, that limitation applies to every level of RICS survey, not just the cheaper ones.
Age matters more here than almost any other cost guide in this series. Houses built before around 1970 are more likely to have vitrified clay drainage, often with unsealed or poorly sealed joints, and some 1950s–70s properties used pitch-fibre pipe, which is prone to deforming and eventually collapsing under the weight of the ground above it as it ages. Both materials are far more susceptible to root ingress and joint displacement than the uPVC used in anything built more recently. None of that is visible, or even hinted at, from the surface.
It's also worth being clear about who's responsible for what you find, because the answer changed in 2011 and catches people out. Before 1 October 2011, a homeowner was personally responsible for the whole run of pipe connecting their house to the public sewer, including any shared section serving several properties. Since then, lateral drains and private sewers that were already connected to the public network before 1 July 2011 transferred to the local water and sewerage company's ownership and repair liability. What stays yours is anything within your own boundary that serves only your house — so a defect close to the building is still your problem to fix, while a shared run further out under a shared driveway or a neighbour's garden may now be the water company's to repair, even though it still affects you if it fails.
Not the same as a CON29DW search
It's easy to assume the drainage question is already covered because a search with a similar name appears on every conveyancing quote. The CON29DW, typically £45–£100 and almost always ordered automatically as part of the standard search pack, is compiled from the water company's own records. It confirms whether the property is connected to the public sewer, shows the mapped route of public and (where recorded) private drains, and flags things like whether the property is at risk of sewer flooding on the water company's own data.
What it can't tell you is the physical condition of the pipe. It's a desk-based search of a map, not a camera run through the actual drain, so a genuinely defective run — root-choked, displaced, partially collapsed — can sail through a clean CON29DW with no flag raised at all, because the search was never designed to catch it. The two are complementary, not interchangeable: the CON29DW tells you what's there and whose problem it legally is if it fails; a CCTV survey tells you what state it's actually in.
What a defect actually costs to fix
Knowing the likely repair cost is what turns a drainage survey from an interesting report into something you can actually use. A single displaced joint or a localised crack is usually the cheapest fix, typically £350–£1,200 for a no-dig patch repair. A longer damaged section that doesn't need digging up can often be relined instead, typically £1,500–£4,000 for a full lateral run, priced per metre for the lining material and labour. A genuinely collapsed section, or one that's inaccessible for a no-dig repair, needs excavating and replacing — typically £1,000–£5,000 or more depending on depth, surface reinstatement and how far the trench has to run.
There's a second reason this matters beyond the repair bill itself. A drain that's been leaking slowly for years, particularly on clay soil, is one of the more common causes of localised ground movement close to a building — I've covered the wider subsidence picture, and how a defective drain fits into it, in underpinning cost. A survey that catches a leaking joint early is cheap compared with the alternative of it going unnoticed until it's affected the foundations.
What I'd watch for in a quote
- Whether the whole run is surveyed, not just the accessible section to the first manhole — ask specifically how far the camera travels before you book.
- A written report with footage, not just a verbal summary, especially if the survey is being used to support a purchase negotiation or a dispute.
- Condition graded against a recognised scale rather than a vague "looks fine" or "needs attention" — a proper report should distinguish a cosmetic root hair from a structural defect.
- Jetting and access/excavation costs quoted separately and upfront, not discovered once the engineer's already on site.
- Pipe material and diameter recorded, since that affects both what's driving any defect found and what a repair is likely to cost.
Questions I get asked
How much does a CCTV drain survey cost in 2026? A basic look-and-see run typically costs £90–£150. A full survey with footage and a written report runs £150–£350. A pre-purchase survey covering and mapping the whole system typically costs £250–£450, rising to £350–£500 or more on a larger, older or harder-to-access property. Jetting to clear the line first adds roughly £100–£150, and locating or excavating a buried access point adds £100–£300.
Do I need a drain survey before buying an older house? It's not a legal requirement, but I'd seriously consider one on any pre-1970s house. A RICS Level 2 or Level 3 survey checks drainage visually at accessible manholes only, so root ingress, a displaced joint or a partially collapsed section of older clay or pitch-fibre pipe can go undetected right through to completion. A CCTV survey is the only way to actually see the condition of what you're about to own.
What's the difference between a drainage survey and a CON29DW drainage and water search? The CON29DW, typically £45–£100 and usually ordered by your conveyancer as standard, is a paper search confirming the mapped route of public and private drains and whether the property connects to the public sewer. It says nothing about physical condition. A CCTV survey is a camera run through the pipe that shows cracks, root ingress and collapses. Both are worth having; neither replaces the other.
What happens if a drainage survey finds a problem? It depends what's found. A single displaced joint or minor crack is often a no-dig patch repair, typically £350–£1,200. A longer damaged section can usually be relined without digging up the garden, typically £1,500–£4,000. A genuinely collapsed section needing excavation runs £1,000–£5,000 or more. Finding it before you exchange turns it into a negotiating point rather than a bill you inherit once you own the problem.
If you're buying an older house and want an honest read on what's likely to need checking beyond what a standard survey covers — drainage included — that's exactly the kind of question I help answer alongside full building survey work. Where a defective drain has already left its mark on the ground around a property, I've covered that wider picture in underpinning cost. Call 07946 618203 or get in touch and I'll give you a straight answer on what's actually worth commissioning before you exchange.
Small print. This guide is general information, not advice on a specific property, and it doesn’t replace a proper survey and written quote for your own home. Prices were researched and correct to the best of my knowledge on 25 August 2026; costs move and vary by region, property and drain access. Always get at least three written quotes, and use a survey firm that's a member of a recognised trade body.