Do I Need a Drain Survey? When It Is Worth Booking

Signs that point to a survey

• The same drain blocks again within weeks of being cleared.
• Sewage smells outside or in a room with no obvious source.
• Damp patches, sunken paving or soft ground along the line of a drain.
• Rats or other pests appearing near chambers or gullies.
• Large trees growing close to where the drainage runs.
• Gurgling from several fixtures or slow drainage across the house.

Situations where a survey protects you

Buying a house is the most common. A standard home report does not put a camera in the drains, and underground defects are the sort of problem that can be expensive to discover after you move in. A homebuyer drain survey tells you what you are taking on before missives are concluded.

Landlords use surveys to check the condition of a property between tenancies or after repeated call-outs. Commercial premises, particularly kitchens, use them to understand whether grease or structural faults are behind repeat blockages. Anyone planning an extension, a new driveway or landscaping near a drain benefits from knowing where the pipe is and what state it is in before work starts.

When you probably do not need one

A one-off blockage with a clear cause, such as wipes flushed by a visitor or a sink blocked with food waste, does not normally justify a survey once it is cleared and running well. Neither does a slow basin that recovers after the trap is cleaned.

If you are unsure, describe what has happened when you ring. We would rather tell you a survey is not needed than sell one that will not change what you do next.

What a survey tells you that unblocking does not

Jetting clears the pipe but does not show you its condition. A camera shows cracks, displaced joints, root ingress, collapsed sections and places where the pipe has settled and holds water. It also records how far along the pipe each problem sits, which is what lets a repair be targeted rather than guessed.

That footage is also evidence. It can support an insurance claim, a conversation with a neighbour about a shared drain, or a question about whether a section belongs to the property or to the public network. Our guide to who is responsible for a blocked drain explains where those boundaries usually fall.

Choosing the right kind of survey

• Problem-solving survey: focused on a drain that keeps blocking or smelling.
• Homebuyer survey: a condition check before you commit to a purchase.
• Landlord survey: a record of condition across a rental property.
• Pre-works survey: locating and checking pipes before building or landscaping.
• Post-repair survey: confirming a repair or liner has done its job.

Booking a survey with Curran

We carry out CCTV drain surveys across West Lothian, Edinburgh, Falkirk, Fife and Lanarkshire, for homeowners, buyers, landlords, restaurants, pubs, shops and commercial buildings. There is no call-out charge. If a blockage needs clearing first, we can do that on the same visit so the camera gets a clean view.

Ring 07427 195142 or use the quote form, and tell us what prompted the enquiry. That helps us focus the survey on the part of the system that matters.

Questions we get asked