Electrics and gas
Blue plastic pipe is clipped under the cellar ceiling. Has the survey followed it to the main, or only described the length in view?
Only the length in view. Blue plastic pipe clipped under the cellar ceiling has been described where it could be seen. The survey has not followed it to the main. A blue pipe is often used for water, but a clipped run across a cellar is not a trace to the street, and it does not prove what is buried beyond the wall. The survey did not excavate and did not test the supply. Ask a plumber or the water company where that pipe actually goes. Do not read the visible clips as a map of the main.
Last reviewed 24 October 2026. Written for buyers in England and Wales unless this answer says otherwise. No named surveyor has signed this page. It is general guidance, not a report on your house, and not legal advice.
What is the fuller explanation?
What the survey can say is limited to the blue pipe under the cellar ceiling: the route across that room, the clips, and where it disappeared. The main is the supply in the ground toward the street. Those are connected only if someone follows the pipe. A visual inspection stops at the wall, the floor or the boxing. Colour and plastic do not identify the buried length. The report should be read as a description of the cellar run.
If you need to know whether this is the incoming main, ask for the pipe to be traced from the cellar to the entry or the pavement chamber, with the seller's agreement. Do not unclip it or cut it on a viewing. Point the plumber at the place it vanished. Until that trace exists, keep the survey wording tight: blue plastic was clipped under the cellar ceiling, and the rest was not followed. A neat clip is not a completed route.
What should you ask your surveyor?
- Where did the blue pipe start and end within the cellar you could see?
- Did it leave through a wall, a floor, or into boxing you could not open?
- Any label, stopcock or joint on that visible length?
What are the typical next steps?
- Read the note as the blue pipe in the cellar, not a traced main.
- Ask a plumber or the water company to trace it beyond the cellar.
- Do not unclip or cut the pipe on a viewing.
Costs vary with the building and with who you instruct. Where this page does not cite a published figure, ask the surveyor, a relevant specialist, or your solicitor for a written quote. Do not treat a forum average as the price.
Also asked about this
Does blue plastic mean the underground supply cannot be lead?
No. The survey only described the length under the cellar ceiling. It did not follow the pipe outside, so the buried supply is still unproved.
If it is clipped neatly, has the main been replaced?
No. Neat clips show a visible run. They do not show a replacement all the way to the main, which the survey did not follow.