The short answer: A home survey considers visible and accessible drainage within its scope. It does not normally include a camera inspection along underground pipes. Knowing that difference helps you understand what the report establishes, why further checks may be recommended and what remains a question for your conveyancer.
What is included in a visual assessment?
The survey considers accessible parts of the property, including drainage features that can be seen. RICS inspection scopes describe lifting accessible chamber covers where safe and without damage; Level 3 can include observing normal drainage operation. Actual access and the agreed terms govern what can be done.
Visible defects, staining, apparent leakage or other evidence may lead to advice. The report should identify restrictions rather than imply that every drain has been examined throughout its length.
Why this is not a CCTV drain survey
Most underground pipework is outside a visual home inspection. A chamber observation cannot show the complete internal condition or route of every pipe. A separate camera investigation may therefore answer questions a Level 2 or Level 3 survey cannot resolve.
It is not automatically necessary for every purchase. If the report recommends one, ask what prompted the recommendation and what the investigation should establish. That keeps additional work focused on the property rather than a generic package of extras.
Access restrictions can be important
- Covers may be inaccessible beneath stored items, landscaping or later construction.
- A cover may be seized, damaged or unsafe to lift.
- Some drainage lies outside the property or in shared areas where access is restricted.
- Occupied properties and vacant properties can offer different opportunities to observe normal use.
- Weather and conditions during one visit may not reproduce an intermittent problem.
Separate condition from ownership
Knowing that a pipe is defective does not, by itself, establish who must repair it. Ask your conveyancer to investigate relevant drainage searches, rights, responsibilities and any documentation concerning alterations. For flats or shared drainage, make sure the legal information and the physical findings are considered together.
Do not assume a conveyancing search is a condition inspection. It supplies different information and does not replace a recommended investigation into the state of a pipe.
Questions to resolve after a recommendation
Ask whether further work is needed before exchange, which area is uncertain and what information a contractor should record. If a defect is confirmed, seek an explanation of the proposed repair and a suitable quotation. A low-cost unblocking visit is not necessarily equivalent to an investigation of condition.
Keep the findings and images with the report and share the relevant information with your conveyancer. You can then make decisions using evidence rather than an assumed repair cost.
Tell the surveyor what you already know
Mention previous blockages, smells, drainage repairs, extensions and any private drainage arrangements when requesting your survey. Ask the agent to arrange reasonable access, but do not attempt to lift unsafe covers yourself. A property-specific quote allows the surveyor to explain the appropriate level and any likely limitations without promising that concealed drainage will be certified by a standard home survey.
Frequently asked questions
Does Level 3 automatically include CCTV drainage?
No. A camera investigation is normally a separate service. Check what is expressly included in your quotation.
If the chamber looks clear, are the drains guaranteed sound?
No. That observation does not establish the condition of all concealed pipes. Follow recommendations based on the evidence at the property.
Do drainage searches replace the physical checks?
No. Conveyancing searches and condition inspection serve different purposes. Ask your conveyancer and surveyor to explain the issues relevant to your purchase.
Which survey is right for the property?
Compare our Level 2 Home Survey and Level 3 Building Survey. Share the address, age, construction, alterations and your concerns before choosing. A more expensive level is not automatically the right answer for every home.
Related homebuyer guides
Sources and scope
Guidance checked against the primary sources below on 17 October 2026. This article concerns residential purchases in England and Wales. It is general information, not a property inspection, specialist test or advice on your individual legal position.