Signs you need pre-purchase drain survey help
- The home is more than about 50 years old
- There are large trees near the drain runs
- The home has had extensions built over drains
- The seller mentions past blockages or drain repairs
Pre-Purchase Drain Survey: what the job involves
A pre-purchase drain survey checks the drains of a home before you buy it. A small camera travels through the pipes and records what it finds. That includes cracks, roots, displaced joints and old repairs. You then know about any costly faults while you can still ask questions about the sale.
A standard homebuyer survey does not look inside the drains. Your solicitor's drainage search, known as a CON29DW, covers the water company's records. However, it does not show the condition of the pipes on the property. A camera survey fills that gap.
The engineer runs the camera from each manhole and access point. You get the footage and a written summary of any faults, while notes show how urgent each one is. If the survey finds damage, you can ask the seller to fix it or adjust the price. The choice, of course, is yours.
How the job goes
- 1. Arrange access Agree a time with the seller or estate agent so the engineer can reach every manhole.
- 2. Run the camera The engineer surveys each drain run from its access point.
- 3. Get the report You receive the footage and a summary of any faults.
Typical costs
MyJobQuote puts a homebuyer drain survey at about £250 to £350 (2026). A basic camera check costs less, at around £85 to £235 (Precise Drainage). The price depends on how many drain runs the home has. These are typical ranges, and you can ask your engineer to confirm the price before they start.
Around Wolverhampton
Many homes for sale around Wolverhampton date from the Victorian or post-war years. Their clay or pitch fibre drains may now be well past the age they were built to last. Because of that, a survey is worth more on an older home than a new build. It can also help with a mortgage or insurance query about the drains.
Pre-Purchase Drain Survey: frequently asked questions
Do I need a drain survey before buying a house?
It is not required, but it is worth it for older homes. A standard homebuyer survey does not look inside the drains. As a result, faults can stay hidden until after you move in.
What is a CON29DW search?
It is the drainage and water search your solicitor orders. The CON29DW residential search asks 25 set questions, such as whether the home connects to the public sewer. However, it does not show the condition of the pipes.
Who pays for the survey?
Usually the buyer pays, since it protects them. You need the seller's agreement for the engineer to visit. Some sellers commission their own survey to answer questions early.
What if the survey finds a fault?
You can ask the seller to repair it or reduce the price, because the report gives you evidence for either request. Your solicitor can advise on the next step.