House Purchase Drain Surveys

Don’t Inherit a Problem

Buying a house is likely the biggest investment you will ever make. You hire a surveyor to check the roof, the walls, and the damp—but who checks what is underground?

Standard home surveyor reports usually include a disclaimer saying they have not inspected the drains. That means you could be buying a property with a collapsed pipe or a rat infestation and not know until you move in.

A House Purchase Drain Survey fills that gap. We check the condition of the drainage system so you know exactly what you are buying.

In simple terms: We give the drains a full health check so you don’t get stuck with a massive repair bill the week you move in.

Why You Need This Survey

Drainage repairs can be expensive. If we find a problem before you exchange contracts, you have the power to ask the seller to fix it, or to negotiate a lower price to cover the cost.

Buyers book this survey to check for:

  • Old Pipework: Many UK homes built in the 50s and 60s use “Pitch Fibre” pipes, which can deteriorate over time, as well as old clay pipework that may be cracked or broken.
  • Tree Roots: Roots from garden trees seeking water inside the pipes.
  • Hidden Cracks: Damage that could lead to subsidence or damp later on.
  • Illegal Connections: Bad DIY work from previous owners that you would become liable for.

How We Do It: The Process

We provide a clear, evidence-based report that your mortgage lender or insurance company will accept.

1. Initial Assessment – We arrive at the property and locate the manholes and access points to understand the layout of the system.

2. Cleaning (If Required) – If the pipes are full of silt or grease, the camera won’t see anything. We use high-pressure water jets to clean the system first, ensuring a clear view of the pipe walls.

3. The CCTV Inspection – We feed the camera through the entire system where accessible (both foul and surface water). We check for cracks, displaced joints, roots, and signs of vermin.

4. Mapping & Tracing – If you are planning an extension, you need to know where the pipes run. We can map the layout so you know if the drains will interfere with your future building plans.

5. Easy to Understand Report – This is the most important part. You receive:

  • A simplified written report grading the condition of the drains.
  • Video footage – a download link of the inspection.
  • A site plan showing where the drains run (not to scale).
  • A quote for any repairs needed. (This is your tool for negotiating with the seller).
A drain survey being carried out by ASL

The Benefits to You (The Buyer)

  • Negotiation Power: If remedial works are required to the drainage system, you may be able to negotiate the asking price to cover some of the costs.
  • Peace of Mind: You know the drainage for the property is sound.
  • Avoid Surprises: Prevents emergency callouts and sewage backups just as you are settling in.
  • Future Planning: Information you need if you plan to carry out any building works in the future.

Don’t buy blind. Let ASL check the drains before you sign on the dotted line.

It’s one of the most valuable checks a buyer can make before exchanging contracts.

Areas we cover

Surrey, Hampshire, Berkshire, West Sussex and South West London

The ASL Limited HQ is in Guildford, but our operating area is the whole of Surrey and parts of Berkshire, Hampshire, West Sussex and South West London.

Map showing areas we cover in Sussex, Hampshire, Berkshire, West Sussex and South West London

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Contact Us

Get in touch today

You can call us on 0800 181 684, email info@asllimited.co.uk or use the form below: