A CCTV drain survey in London costs between £100 and £500 depending on the type of survey you need. The difference is not just about pipe length — it is about purpose. A basic drain check before calling an engineer costs far less than a full pre-purchase report with written findings graded to the WRCm standard. Understanding which type you need before you call prevents you from overpaying for scope you do not need, or underpaying for a survey that will not give you what the bank, solicitor, or insurer actually requires.
The Four Types of CCTV Drain Survey in London
Basic drain check — £100 to £175
A single-line camera inspection to identify an obvious blockage, confirm a drain is clear after jetting, or check for a known problem. The engineer inserts a camera, records footage, and provides a verbal report on what was found. There is no written report and no WRCm defect coding. Suitable for straightforward residential blockage investigations where you need eyes in the pipe rather than a formal document.
Pre-purchase residential survey — £150 to £350
The most common survey type in London. A camera is run through the full accessible drainage system of a property — typically kitchen drain, bathroom drain, and the combined lateral to the public sewer — with footage recorded and a written report produced. Defects are coded to the Water Research Council methodology (WRCm), making the report acceptable to mortgage lenders, solicitors, and home insurers. However, before booking, check the engineer's company on Companies House to confirm trading history. This is the survey to book before exchanging on any London property, particularly one built before 1970. See our CCTV drain survey cost page for current fixed prices.
Full drainage mapping survey — £350 to £500+
Required when the drainage layout is unknown or complex — common in converted Victorian houses divided into flats, or commercial properties. The engineer maps every drain run, identifies all connections, locates manholes, and confirms the boundary between private and Thames Water-adopted pipework. The resulting plan is used for building control applications, insurance claims, and lender requirements where a standard pre-purchase survey is insufficient.
Insurance or structural investigation — £250 to £600+
Surveys commissioned to support an insurance claim — typically following subsidence, flooding, or suspected drain-related structural damage. These require a detailed written report, measurements, photographic evidence at defined intervals, and sometimes a second-engineer sign-off. If your insurer has requested a survey, confirm the exact format they require before booking — not all companies produce reports to the same standard.
What Is Included in a CCTV Drain Survey
A basic camera check typically includes: attendance, equipment, footage review, and a verbal report. A pre-purchase or structural survey adds: full footage recording to DVD or digital file, a written WRCm-coded report, defect photography with timestamps, a drainage layout sketch, and in some cases a follow-up call to walk through the findings.
Always ask what format the report is delivered in and whether the footage is provided. If you are buying a property, your solicitor will want the written report. If you are making an insurance claim, your insurer will specify the required format.
Factors That Affect the Price in London
Number of drain runs. A terraced house with a single combined run is a straightforward survey. By contrast, a semi-detached with separate foul and surface water drains, a back-addition, and a shared lateral adds time and equipment passes.
Access. Drains without accessible inspection chambers require entry from a gully, toilet, or rodding eye. Restricted-access surveys take longer and may not produce complete footage of the full run.
Report complexity. A basic verbal debrief takes minutes. A full WRCm-coded written report with defect photography, drain plan, and recommendations takes hours to produce and is priced accordingly.
Inner London premium. Congestion zone fees, parking restrictions, and higher operating costs mean inner London surveys typically cost 15–20% more than equivalent work in outer London or the home counties.
Combination with jetting. Many engineers offer a combined survey and jet — the drain is jetted first for a clear camera view, then surveyed. This is best practice for pre-purchase surveys on older properties, and usually costs £50–£100 more than a survey alone.
When a CCTV Survey Is Non-Negotiable
Before buying any London property built before 1980. Our surveyors find significant defects in roughly half of all pre-purchase surveys on Victorian and Edwardian stock — root intrusions, collapsed sections, displaced joints. None of these show up in a standard RICS homebuyer report. See our dedicated guide to pre-purchase drain surveys in London.
When a blockage recurs. If a drain has blocked twice or more in 12 months, jetting the symptom without surveying the cause is wasted money. A camera pass after jetting identifies whether a structural issue is responsible.
Before any building works near a drain run. Extensions, loft conversions, and basement excavations all risk damaging or disturbing drain runs. A pre-works survey establishes the drain condition so liability for any post-works defects is clear.
When Thames Water disputes responsibility. If Thames Water is contesting whether a drain is adopted or private, an independent CCTV survey with a measured drainage plan is the most effective evidence. See our guide on Thames Water vs homeowner responsibility.
How to Choose a Survey Company in London
Look for companies that explicitly state their reports are coded to WRCm methodology and that provide full digital footage. If the report is for a mortgage or solicitor, confirm in advance that the format meets their requirements — some lenders specify they only accept reports from certain accredited schemes.
Avoid companies that quote a survey price and then charge separately for the written report, the digital footage, and the drainage plan. A reputable surveyor will quote you a single fixed price covering all deliverables before the engineer attends.
Our CCTV drain survey service covers all 32 London boroughs. Reports are produced to WRCm standard with full digital footage and a drainage sketch as standard.
Frequently Asked Questions
How long does a CCTV drain survey take in London?
A basic residential check takes 30–60 minutes on site. A full pre-purchase survey with multiple drain runs takes 1–2 hours. A complex drainage mapping survey for a commercial property or converted house can take a full day.
Do I get the CCTV footage after the survey?
With a reputable surveyor, yes. Full footage should be provided as a digital file alongside the written report. Always confirm this before booking — some companies charge extra for footage or do not provide it at all.
Does a CCTV survey always find something?
No. Newer properties or those with recently relined drains often produce a clean survey with no defects coded. A clean report has real value — it removes uncertainty and provides a baseline record for the future.
Will my mortgage lender accept the report?
Most mortgage lenders accept reports produced to WRCm standard by a competent drainage engineer. Some lenders specify they require a member of a particular trade body. If in doubt, confirm the report format with your lender before booking.
How much notice do you need to book a survey in London?
For non-urgent residential surveys we typically book within 2–3 working days. Emergency or same-day surveys are available for an additional surcharge. Call 0204 593 7845 to check current availability.