New builds and warranties
A new estate drain is shared and your survey did not camera it. What warranty inspection of that drain has your report not replaced?
Your report has not replaced a warranty inspection of that shared drain. The estate drain serves more than your plot, and the survey did not camera it. A home survey that never saw inside the pipe has not done the inspection a warranty provider might carry out, and it has not opened a claim. NHBC describes Buildmark as a 10-year warranty and insurance product. The survey does not stand in for that product's inspections and does not decide that the shared drain sits inside the cover. The pipe was not filmed. Mentioning the drain has not turned this report into the warranty inspection.
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?
A shared estate drain can run under a neighbour's garden or under the road the developer laid, so a defect may sit off your plot. The survey can note a chamber you have and can say a camera was not used. It cannot see the shared run, and it cannot carry out whatever inspection the warranty side uses. Those are different visits, with different papers. With no camera, this report has no images of the pipe to offer in place of a warranty inspection that was never this survey's job.
Ask the solicitor what the warranty says about shared drainage, and whether the warranty body has inspected that drain. NHBC describes Buildmark as a 10-year warranty and insurance product. This survey does not open a claim under it. Do not present the home report as a camera survey of the estate drain. The limit in the report is a limit. It is not a warranty inspection that your survey has replaced.
What should you ask your surveyor?
- Did you leave the shared estate drain without a camera?
- Have you avoided presenting this report as a warranty inspection?
- What of the drain, if anything, was visible in a chamber?
What are the typical next steps?
- Treat the shared drain as not camera-surveyed.
- Ask the solicitor what a warranty inspection of that drain would be.
- Do not use the home survey to open a claim.
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 your manhole looks clean, has the shared run been inspected?
A clean chamber shows that chamber. It does not camera the shared run, and the survey did not camera it. The report has not replaced a warranty inspection of the drain. NHBC describes Buildmark as a warranty and insurance product. This visit has not opened a claim and has not cleared the pipe beyond the chamber.
Does a new drain on a new estate need no further look?
Being new is not an inspection. The survey did not camera the shared drain and has not replaced a warranty inspection of it. NHBC describes Buildmark as a 10-year warranty and insurance product. The survey does not open a claim and does not call the pipe sound because the estate is new. The run stays unseen.