Subsidence, settlement and heave
The report mentions helical bars next to a stitched crack. Has movement the stitch does not date been tested, or only named?
Movement that the stitch does not date has been named, not tested. Helical bars beside a stitched crack show that someone has already tied that crack. The bars do not say when the crack opened, whether the wall has moved since the stitch, or whether the cause is still active. A home survey sees the repair and the line of the crack. It does not monitor the wall over time. It has not decided that stitching means the movement has stopped. The date of any movement is outside what the bars can prove.
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?
Helical bars are rods set across a crack to hold the masonry together. They are a repair, not a record of when the crack happened. A neat stitch can sit on a crack that has long been still, or on a crack that is opening beyond the ends of the bars. The surveyor can see the filled line and the signs of the stitch. They cannot see a season of movement in one visit. Naming the bars records the repair. It does not test the ground or date the crack.
Tell the solicitor the stitch is evidence of a past repair, not evidence that movement has finished. The Association of British Insurers describes subsidence as something that can affect a building. A stitch in a survey is not an insurance decision, and this visit has not made one. If you need to know whether the crack is still live, a structural engineer can advise on monitoring. The survey has not carried that out. Do not present the bars as proof the wall is now stable.
What should you ask your surveyor?
- Does the crack continue beyond the ends of the helical bars?
- Were the bars seen in open slots, or only inferred from filled holes?
- Did you see fresh cracking in the stitch itself?
What are the typical next steps?
- Treat the bars as a repair, not as a date for the movement.
- Tell the solicitor the survey did not monitor the wall.
- Ask a structural engineer if you need advice on whether the crack is still live.
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 a neat stitch mean the cause has gone?
No. A tidy repair can hide an old crack or sit on one that is still moving past the bars. The survey named the stitch and did not test later movement. It has not decided the cause. The Association of British Insurers discusses subsidence as a building risk. This note is not a claim and it is not a conclusion that movement has stopped.
Should the stitch be opened to look at the crack?
No. Do not open the stitch yourself. The bars are the repair that was seen, and the survey did not date the movement they cross. Taking them out is a later specification, if an engineer asks for it, not a job for a buyer on a viewing. Leave the wall as found until that advice exists.