New builds and warranties
The new house is timber frame, and the buyer assumes a masonry party wall. What should the report say about that assumption?
It should reject the assumption. If the house is timber frame, the report should say so where the surveyor could tell, and it should not describe the party wall as masonry merely because the buyer expected brick. A timber frame behind a cladding or a lining is not a brick party wall. The survey still does not serve a party-wall notice or make an award.
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?
Brick slips, render and a masonry outer leaf all persuade buyers they have bought a traditional cavity party wall. On a timber-frame house the structure that actually separates the homes can be a framed party wall with linings, cavity barriers and a different way of carrying floors. The report should name the construction it could identify and say what it could not open. It should not leave the buyer's assumption standing. It also should not pretend a visual inspection opened the party wall to prove every stud. Where the frame was concealed, the limit belongs in the report in plain words.
The assumption matters because later work, fixings and fire-stopping are not the same job as chasing a brick party wall. None of that authorises the surveyor to serve notices under the party-wall legislation or to make an award between neighbours. Those are not survey tasks. Ask the solicitor for the warranty and the structural information that names the frame. Ask the surveyor what was visible at loft level, at sockets, or at an unfinished opening. Read that, rather than the brochure's picture of a brick semi, before you plan to knock through.
What should you ask your surveyor?
- Where could you tell the house was timber frame, and where was it concealed?
- Will the report contradict a masonry assumption in plain words?
- Are party-wall notices outside this instruction?
What are the typical next steps?
- Read the report's description of the frame before you plan work to the party wall.
- Ask the solicitor for the paperwork that names the construction.
- Do not expect the surveyor to serve a party-wall notice or make an award.
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 outside is brick, can the party wall still be timber?
Yes. An outer leaf can be masonry while the party wall is framed. The report should say what it could tell.
Does naming the frame certify the fire-stopping?
No. Naming the construction is not a test of the barriers hidden inside it.