The Importance of CCTV Underground Drainage Surveys for Your Home

“It’s what you don’t know that matters.”

This is especially true when inspecting buildings, as we often come across inspection chambers that need to be checked as part of our RICS Level 2 and Level 3 Surveys.

While we can certainly point out things such as cracks and blockages, our assessments are primarily based on what we can see. And when it comes to underground drainage, there may be hidden issues lurking below the surface.

What is a CCTV underground drainage survey?

Simply put, a CCTV underground drainage survey is used to inspect and assess the condition of underground drainage systems.

This type of survey uses a specialised camera to provide a clear, real-time view of the interior of drainage pipes and sewers.

Why should you consider a CCTV drainage survey?

Defective drains can cause various problems, including:

• Foul odours: Unpleasant smells from blocked or damaged drains.

• Overflowing toilets: Potentially caused by severe blockages.

• Foundation issues: Eroded soil around foundations can lead to subsidence.

It’s for this reason that we typically recommend that our clients instruct a survey, especially in areas with a large number of trees or where the subsoil tends to shrink, such as London clay. Equally, this is particularly crucial for older drains using clay pipes, which are easily fractured by ground movement or foundation settlement.

What are the Benefits of Conducting a CCTV Drainage Survey?

When it comes to maintaining your property, what you can’t see can often cause the most trouble. A CCTV drainage survey provides a detailed view of your underground drainage system, allowing you to identify and address hidden issues before they escalate into costly repairs. This type of survey can help you detect:

• Leaks: Water escaping from damaged pipes.

• Blockages: Commonly caused by debris or concrete.

• Cracked pipes: Structural damage due to ground movement.

• Misaligned pipes: Pipes that have shifted from their proper position.

By uncovering these issues early, you can take proactive measures to protect your property and avoid expensive complications down the line.

How does a CCTV drainage survey work?

The field of drainage surveys requires specialised expertise, and a typical inspection generally encompasses the following steps:

1. Camera Insertion: A specialised waterproof camera is inserted into the drainage system. This camera is mounted on a crawler unit or a flexible rod for navigation.

2. Real-Time Video Feed: The camera sends live video to a monitor, allowing technicians to view and record footage.

3. Inspection and Analysis: Technicians detect blockages, cracks, leaks, and other issues. They also measure pipe diameter and assess damage extent.

4. Reporting: A detailed report is created after the survey, including video footage and images of problem areas. This report helps recommend necessary repairs or maintenance.

How much does a CCTV drainage survey cost?

The cost of a CCTV drainage survey varies depending on the complexity of the drainage system. For a standard three-bedroom house, you can expect to pay around £500. While this may seem like a significant cost, it can potentially save you significant repair costs by identifying issues before purchase.

Takeaway

RICS Level 2 and RICS Level 3 Surveys provide valuable insights into visible aspects of a property. A CCTV underground drainage survey offers a detailed view of your drainage system, helping to identify leaks, blockages, and structural damage that could otherwise go unnoticed. This is especially important in areas with tree roots, shrinking subsoil, or older properties with clay pipes.