Subsidence, settlement and heave
The brick piers of the rear garden wall lean and the house walls the surveyor checked are still plumb. Why should that lean not be filed as subsidence of the house?
That lean should not be filed as subsidence of the house. The brick piers of the rear garden wall lean, and the house walls the surveyor checked are still plumb. Those are different structures. Subsidence, in the sense a buyer is worrying about, is movement of the ground under the building. A garden pier can tilt from its own footing, from a tree, or from the wall it sits in, without the house having moved. The survey recorded a leaning pier and plumb house walls. It has not called the house subsiding.
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 freestanding garden wall is not a wall of the house. Its piers can lean while the elevations that were checked stay upright, and that contrast is the point of the note. Filing the pier lean as house subsidence would invent movement in a building the surveyor found plumb. The inspection has not dug the pier base, has not monitored the lean, and has not said the garden wall is harmless. It has kept the defect on the garden wall, which is where it was seen.
Tell the solicitor the house walls that were checked are plumb, and that the lean is in the garden piers, so the two are not one claim. If the garden wall is close to the house or holds up ground, a structural engineer can look at that wall on its own. Do not ask an insurer to open a subsidence file on the house from a pier the survey kept separate. The report has not decided the cause of the lean.
What should you ask your surveyor?
- Which house walls did you check, and were those walls plumb?
- Did you record the pier lean as a garden-wall defect rather than house movement?
- What of the pier foundations was not opened or monitored?
What are the typical next steps?
- Keep the leaning piers on the garden wall, not on the house.
- Tell the solicitor the checked house walls were plumb.
- Ask an engineer about the garden wall only if that wall matters.
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
Could the pier lean later pull the house out of plumb?
The survey has not forecast that. It found the piers leaning and the house walls it checked still plumb, and it did not monitor either. A future link is speculation, not a finding. Nothing in the inspection proves the house will follow the garden wall, and nothing in it proves the pier has finished moving.
If the garden wall is old, is the lean simply its age?
Age does not explain the lean and does not clear it. An old pier can be leaning because it is failing, or it can have leaned for a long time. The survey did not date the movement and did not call it house subsidence. The house walls that were checked were plumb.