Electrics and gas
The seller says heating pipes are cast into the conservatory slab. Can the survey confirm them without opening the floor?
No. The survey cannot confirm heating pipes cast into the conservatory slab without opening the floor. The seller's sentence is a claim. The survey can record the conservatory and that no pipes were visible. It cannot see through concrete, prove the loops are there, or show that they heat. A home survey does not break a slab open. Until the floor is opened, or other real evidence is produced, the pipes remain what the seller says, not what the inspection proved. Do not core the slab on a viewing to settle it.
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?
Pipes cast into a slab are hidden by definition. Confirmation would mean seeing them, tracing a manifold that clearly serves them, or opening the floor. A verbal claim does none of those. The surveyor can look at the screed, the edges and any manifold elsewhere in the house. None of that is the pipes inside this slab. Underfloor loops and ordinary buried supplies are easy to mix up in conversation. The inspection has not sorted them, because the concrete stayed closed.
Put the seller's claim into the solicitor's questions and ask for any plan, photograph from the build, or manifold schedule that shows conservatory loops. Ask a heating engineer only if there is something visible to inspect, and do not instruct anyone to cut the slab before you own the house. If no evidence comes, the honest position is unchanged: pipes may be in the floor, but the survey has not confirmed them. A warm conservatory on one day would still not map the slab.
What should you ask your surveyor?
- Did you see any pipe, joint or manifold that actually entered the conservatory slab?
- Was the floor solid and closed, with no lifted section?
- Are you recording the seller's claim as their words rather than as your finding?
What are the typical next steps?
- Do not treat the seller's words as confirmation of pipes in the slab.
- Ask the solicitor for any plan or build record of those loops.
- Do not open or core the conservatory floor 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
If the conservatory felt warm, are the pipes confirmed?
No. Warmth can come from the sun or from heat next door. It does not show pipes cast into the slab, which the survey could not see.
Can a metal detector on the floor replace opening it?
No. A beep would not confirm heating pipes, their condition or that they are in use. The survey still has not opened the slab.