What Is a CCTV Drain Survey and When Do You Need One?

Quick Answer

A CCTV drain survey uses a specialist camera to inspect the inside of drains and identify problems such as blockages, cracks, tree roots and collapsed pipework.

It is useful for repeat blockages, property purchases, suspected damage and planning drain repairs.

How Does a CCTV Drain Survey Work?

A drainage engineer inserts a small camera into the pipework through an access point such as a manhole, inspection chamber or suitable drain opening.

The camera footage is viewed in real time to locate faults and understand the condition of the system.

Depending on the survey type, the engineer may also record footage and provide a written report.

What Problems Can It Find?

A CCTV survey can identify blockages, cracks, displaced joints, root intrusion, collapsed drains, scale, silt, standing water and poor pipe alignment.

It can also help show whether a blocked drain is a simple blockage or a symptom of a deeper structural problem.

If repairs are needed, our drain repair cost guide explains the difference between patch repairs and replacement.

When Do You Need a CCTV Drain Survey?

You may need a survey if you have recurring blockages, slow drains, foul smells, suspected damage, flooding, subsidence concerns or a collapsed drain.

It is also useful before buying a property, especially if the building is older or there are signs of drainage issues.

For property purchases, see our pre-purchase drain survey service.

CCTV Drain Surveys for Home Buyers

A survey can identify hidden drain defects before you complete a property purchase.

This can help avoid unexpected repair costs and give you evidence for negotiation if significant defects are found.

It is especially valuable for older properties, extensions, trees near drainage lines or properties with unclear drainage layouts.

CCTV Surveys for Repeat Blockages

If the same drain keeps blocking, unblocking alone may not solve the root cause.

A survey can show whether the issue is fat buildup, wipes, root ingress, a broken pipe, a belly in the line or a collapsed section.

If your symptoms are still early, read our blocked drain warning signs guide.

What Happens After the Survey?

After the inspection, you should receive clear advice on what was found and what action is recommended.

This may include no action, cleaning, high-pressure jetting, root cutting, patch repair, lining, excavation or replacement depending on the problem.

The right solution depends on the location, condition and severity of the issue.

Is a CCTV Survey Worth It?

A CCTV survey is often worth it when the problem is recurring, hidden or potentially structural.

It can save money by avoiding guesswork and helping target the correct repair.

For price guidance, see our CCTV drain survey cost guide.

Book a CCTV Drain Survey

Alton Facility Services provides CCTV drain surveys for homeowners, buyers, landlords and commercial sites across Hampshire, Surrey and nearby areas.

Need an inspection? Contact our team or call 0808 175 5779.