Party walls and boundaries
Is a shared stack, together with the neighbour's flue, any evidence on which breast this house actually owns, or only a note of what was visible?
It is only a note of what was visible, not evidence of which breast this house owns. A shared stack and the neighbour's flue show chimneys that read as one mass from the view the surveyor had. They do not show the title line inside the brick, which breast is in this house's demise, or who must repair. The survey has not opened either flue, has not read the deeds, and has not awarded the breast to either owner. Party wall rules about notifying work are a separate matter from that note.
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?
Old terraces often gather flues from each house into one stack on the party line. You may see a pot that serves next door, or a breast that seems to sit on the boundary. That records geometry. Ownership sits in the title and the plan, which a home survey does not decide by looking at pots. Party wall legislation is about notifying certain work. It does not award this house the neighbour's flue from a sentence in the report.
Ask the solicitor to check the title and the plan for where the party line cuts the stack, and not to treat the survey sentence as ownership. If work to the breast is later proposed, party wall advice is a separate instruction from this report. Tell them the neighbour's flue was noted as visible, not traced. The home survey has not written to the neighbour and has not decided a repair share. The lender, reading the same note, does not receive a legal ruling on the breast.
What should you ask your surveyor?
- Did you record the shared stack only as something visible?
- Have you left ownership of the breast to the title, not the survey?
- Was the neighbour's flue noted without being traced?
What are the typical next steps?
- Treat the shared stack as a visual note, not as title.
- Ask the solicitor to check where the party line cuts the stack.
- Keep any party wall notice as a separate instruction from this report.
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 next door's pot is on this stack, do we maintain it?
The survey has not said so. A pot that appears to serve the neighbour was a visual note. Who maintains it depends on the title and on any agreement, which this visit did not read. Do not take on that flue because it shares a stack. The report has not split the cost or the duty.
Does a breast wholly in this room prove the whole stack is ours?
No. The breast you see in the room can belong with this house while the stack above still straddles the boundary. The survey did not open the brick or read the plan. A breast on this side is not a grant of the neighbour's flue. Ownership stays a question for the solicitor and the deeds.