Choosing a survey level
A Level 3 is the most detailed of the three home surveys. Why is it still not a guarantee that concealed foundations were exposed?
It is still not a guarantee that concealed foundations were exposed. A Level 3 is the most detailed of the three home surveys, and it remains a visual inspection of what can be seen without opening the structure as a matter of course. The survey has used the access it had. It has not dug out the foundations, and choosing the most detailed level does not create a trench. Concealed concrete stays concealed unless a different instruction exposes 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?
RICS describes the levels so a buyer can match effort to the house, not so that Level 3 becomes a ground investigation. The surveyor can comment on cracks, floors and the ground around the walls. Those comments are still from looking. Foundations under the soil are not seen by walking the garden or by writing a longer report. If the instruction did not include exposure, the report should not be read as if the concrete was uncovered and judged.
If you need the foundations seen, that is a separate opening-up or engineer's investigation, agreed for that purpose. Tell the solicitor the Level 3 did not expose them. Do not tell a lender the footings were inspected because you bought the most detailed home survey. Use the report for what it could see, and keep concealed work labelled as concealed.
What should you ask your surveyor?
- Did this Level 3 leave the foundations unexposed?
- Are you describing a visual home survey rather than a ground investigation?
- What around the walls was actually seen, as against what is still buried?
What are the typical next steps?
- Read the Level 3 as visual, not as exposed foundations.
- Do not tell a lender the footings were uncovered.
- Instruct an engineer only if the buried work must be 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
If the report discusses the ground, were the foundations uncovered?
Discussion is not exposure. The survey can talk about the ground it walked on. It has not dug out the foundations, and a Level 3 does not guarantee that concealed concrete was seen. Buried work stays outside a visual visit.
Does a trial pit by a seller count as this survey?
Only if this report actually relies on a pit it describes. A seller's hole, unseen and unadopted, is not the Level 3. The home survey has not guaranteed that concealed foundations were exposed. An unadopted hole is not this inspection.