Subsidence, settlement and heave
A poplar stump is in the lawn and a crack has appeared in the nearest wall. Can the survey prove heave from the stump?
No. The survey cannot prove heave from the stump. A poplar stump is in the lawn and a crack has appeared in the nearest wall. Those are two facts. Heave would be the ground swelling after a tree stops drawing water, and proving it needs more than a stump and a crack near each other. The survey has not tested the soil and has not got dated readings of the crack. The stump has not been turned into a demonstrated cause.
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?
Poplars take a lot of water, and when one is removed on clay the soil can recover moisture and lift. That mechanism is a possibility people discuss. It is not established by seeing a stump and a crack in the nearest wall. The crack could be older than it looks, or unrelated. The surveyor did not sample the soil, did not find roots under the wall, and did not inherit a set of dates that show the crack opening after the felling.
If heave is the worry, ask for a soil investigation and for any dated record of when the crack appeared, rather than treat the stump as proof. Tell the solicitor the survey cannot prove heave from what was seen. Do not agree a price movement that assumes a mechanism nobody has confirmed. Keep the seller's story of timing separate from a test that has not been done.
What should you ask your surveyor?
- Where is the poplar stump relative to the cracked wall?
- What would be needed before heave could be proved?
- Was any soil sample taken?
What are the typical next steps?
- If heave is the worry, ask for a soil investigation and any dated record of the crack.
- Tell the solicitor the survey cannot prove heave from the stump.
- Do not price the crack as heave when no test has confirmed it.
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 crack appeared after the tree was felled, is heave proved?
No. A crack that seems new since the felling is still a story about timing until it is dated. The survey has not proved heave, has not tested the soil, and has not recorded a series of measurements. Coincidence of a stump and a crack is not that proof. Newness, unverified, does not finish the argument.
Did the survey test the soil under the nearest wall?
No. The soil under the nearest wall was not tested on this visit. The survey saw a poplar stump and a crack. It did not take samples and did not confirm shrinkable clay or swelling. Without that test, heave stays a suggestion. It is not a finding the report has proved.