Party walls and boundaries
Joists are pocketed into the party wall and the pockets were not opened. What was not seen inside the wall?
The joist ends inside the pockets were not seen, nor the bearing they sit on, nor any rot or gap within the wall. The joists are described as pocketed into the party wall, and the pockets were not opened, so the inspection stopped at the face. A pocket can hide a decayed end even when the timber in the room looks fair. The survey has not cut into the party wall. It has not served a notice and has not written an award. What lies inside the wall at those bearings stays unknown.
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 floors often bear by pushing the joist end into a hole in the shared wall. The visible length can be dry while the last few inches, sitting in masonry, are the part that fails. Opening that hole is destructive, and a home survey does not do it as standard. The report can say the pockets exist and were left shut. It cannot describe the end grain, the air around it, or whether the wall has been cut about in a way that matters to the neighbour.
Tell the solicitor the joist ends were not seen. If the floor is to be opened, that is a further instruction and may also be work the Party Wall etc. Act covers, which the survey has not started. Do not tell a lender the floor structure was inspected throughout. A timber specialist can look if access is agreed. The condition of the boards you could walk on is not a verdict on the hidden ends.
What should you ask your surveyor?
- Were the joist ends inside the pockets left unseen?
- Did this visit cut into the party wall?
- Has any party-wall notice been served by the survey?
What are the typical next steps?
- Treat the pocketed ends as not inspected.
- Tell the solicitor the bearings were not opened.
- Do not describe the visible floor as a full structural check.
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 sounding the boards with a heel replace opening the pockets?
No. A step on the boards tests the floor you can walk on, and only in a rough way. It does not see the joist end inside the wall. The pockets were not opened. A solid feel underfoot can sit beside a decayed bearing. Ask for a proper look if the ends matter. Do not promote a footfall into an inspection of the pocket.
If the neighbour's side of the wall was also unseen, what follows?
The same limit, from the other face. The survey of this house did not open their ceiling or their floor. Shared structure needs access the visit did not have. Tell the solicitor. A later look, if agreed, is still not an award under the Party Wall etc. Act. The hidden ends remain hidden until someone opens them.