Party walls and boundaries
The title plan shows a T mark on the garden wall and the survey describes the lean. Which document deals with the mark, and which with the lean?
The title plan is the document that carries the T mark, and the survey is the document that describes the lean. Ownership of the garden wall, if the mark means anything, is for the solicitor reading the title, not for the inspection. The survey has recorded how the wall leans. It has not decided who must repair it, and it has not turned a T mark into a condition rating. Mark and lean stay in different documents.
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 T mark on a title plan is a title clue. Whether it shows responsibility for a boundary depends on the register and the plan together, which is conveyancing. Land Registry material is read by the solicitor. A lean is a physical fact: the wall is out of upright by what the surveyor could see. Those sentences do not answer each other. The survey did not interpret the mark, and the plan did not measure the lean.
Ask the solicitor to read the T mark against the register and to say what it does, and does not, decide. Pass the survey's description of the lean as condition only. Do not ask the surveyor to award ownership, and do not ask the title plan to say whether the wall is safe. If a neighbour is involved, that conversation sits with the solicitor and the title, not with a rewrite of the lean.
What should you ask your surveyor?
- Did the survey describe the lean without deciding what the T mark means?
- Which document are you leaving the T mark to, the title rather than the report?
- Have you avoided stating who owns the garden wall?
What are the typical next steps?
- Ask the solicitor to interpret the T mark on the title plan.
- Use the survey only for the description of the lean.
- Do not treat the lean as a decision about ownership.
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 wall leans toward the house, does the T mark become urgent?
Direction of lean is still condition, and it belongs in the survey. Urgency does not move the T mark out of the title. The solicitor reads the mark. The survey has not decided ownership because the wall leans one way rather than another.
Can the seller's word replace the title plan?
No. A seller's account is not the title plan and it is not the survey. The mark is on the plan the solicitor must read. The lean is what the inspection described. Conversation does not rewrite either document. Ask the solicitor to read the plan.