Choosing a survey level

Why might a Level 2 lift an inspection-chamber cover that a Level 1 leaves alone, and when might neither lift it?

Only where it is safe, and not where the cover is secured shut. Level 2 and Level 3 look further into drainage chambers than Level 1 where that can be done safely, so a Level 2 may lift a cover a Level 1 leaves alone. Neither a standard Level 1 nor a standard Level 2 removes a secured cover, and neither should lift a cover where it is unsafe to do so.

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?

Level 1 is a visual overview. It does not test the fabric or the services, and it does not generally explain how to manage what it finds. Leaving a chamber cover where it lies fits that narrower job. Level 2, aimed at a conventional home of simple form in reasonable condition, goes further into those chambers when the cover can be lifted safely. That is a difference of extent, not a promise that every cover on the plot comes up.

Neither level lifts the cover when it is screwed or otherwise secured, because those secured covers stay on during a standard inspection, just as secured panels stay on. Neither lifts it when the cover is too dangerous to move: weight, traffic, damage or a unsafe surround are reasons to stop and to say the chamber was not inspected. A camera down the pipe is a different instruction again. Looking in an open chamber, where that happened, is not a filmed survey of the run.

What should you ask your surveyor?

Which covers did you lift, and which did you leave because they were secured or unsafe?
Is each unopened chamber marked as not inspected?
Are you distinguishing a chamber look from a camera survey?

What are the typical next steps?

Expect Level 1 to leave covers that Level 2 may lift only where safe.
Do not demand that a secured or unsafe cover is pulled up.
Read not-inspected lines on chambers before you assume the drains were seen.

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 Level 3 always lift every cover?

No. It looks further where it is safe. A secured or dangerous cover can still stay down.

If the cover is only heavy, is that the same as secured?

Not the same word. Unsafe is its own reason to leave it, and the report should say the chamber was not inspected.