When buying a house, most people focus on the obvious: the roof, windows, boiler, and electrics. However, a hidden network of pipes beneath every property often gets overlooked until something goes wrong. A CCTV drain survey can reveal problems that standard home surveys miss entirely.
What is a CCTV Drain Survey?
A CCTV drain survey sends a small, waterproof camera through your drainage system. It records high-definition footage of the pipes as it travels. As a result, engineers can spot blockages, damage, and other problems without digging.
Why Standard Home Surveys Don't Cover Drains
A homebuyer's survey, or even a full building survey, only examines the visible and accessible parts of a property. Since drains sit underground and hidden, they fall outside that scope. Unless there's visible evidence like damp or subsidence, drainage issues won't get flagged.
Common Problems Discovered During Drain Surveys
Tree Root Ingress
Tree roots naturally seek out moisture, and your drains provide exactly that. Roots can infiltrate pipe joints and cracks over time. As a result, this can cause complete blockages or even pipe collapse. Properties with mature trees nearby face the highest risk.
Collapsed or Broken Pipes
Older properties often have clay or pitch-fibre pipes that deteriorate over time. A CCTV survey can reveal cracks, breaks, or complete collapses. Since these usually need excavation to repair, spotting them early saves money.
Displaced Joints
Ground movement, traffic vibrations, or poor installation can cause pipe joints to separate. This lets waste leak into the surrounding soil. Consequently, it can eventually lead to subsidence.
Incorrect Connections
Some properties have illegal or incorrect connections, such as surface water drains wired into foul sewers or vice versa. Since this breaches regulations, it can trigger compliance issues and fines.
Fat and Debris Buildup
Even without structural damage, significant buildup in the pipes can signal future problems. Since it often needs addressing before you move in, it's worth checking now.
The Cost of Not Surveying
Drain repairs can be extremely expensive, particularly if excavation is required. Since costs vary so much, what you pay depends heavily on the type of work needed:
- Simple drain unblocking is the cheapest fix, usually resolved in a single visit
- Drain relining costs more but avoids digging, so it's often still cheaper than excavation once reinstatement is factored in
- Excavation and pipe replacement is the most expensive route, driven by depth, length, ground conditions, and surface reinstatement
- A full drainage system replacement sits at the top end, reserved for properties where the whole network has failed
A pre-purchase CCTV survey costs far less than any of the options above. It can save you from inheriting someone else's expensive problem. Request a fixed-price quote online, since we confirm the price before any work begins.
Using Survey Results in Negotiations
If the CCTV survey reveals issues, you have several options:
- **Negotiate a price reduction** to cover repair costs
- **Request the seller fix the issues** before completion
- **Walk away** if the problems are too severe
- **Proceed with full knowledge** and budget for repairs
Many of our Portsmouth customers have negotiated thousands off their purchase price. This happens because our surveys often reveal drain problems the seller never knew about.
What to Look for in a Survey Provider
Choose a drainage company that provides:
- Full HD camera footage you can keep
- A detailed written report
- Clear explanation of any issues found
- Recommendations for remedial work
- No-obligation quotes for any repairs needed
At Emergency Plumber In Portsmouth, we provide comprehensive pre-purchase drain surveys for house-buyers across Portsmouth. Coverage also reaches out towards Havant and Hayling Island, and further afield around Chichester and the West Sussex border and Petersfield further north. Additionally, our engineers explain exactly what they find, with honest, plain-English advice about any issues.
If a survey reveals damage, we also offer professional drain repairs. Since problems vary, this includes pipe relining and drain excavation, matched to the type of damage found.
Book your CCTV drain survey today, or contact us online with any questions. While you're getting to know a new property, it's also worth locating the stopcock. Knowing how to turn off the water in an emergency can help before you ever need to.
Find this service near you
We offer cctv drain surveys across the Portsmouth area. Choose your town to see local details.