Age and type of house
Can a brick outer skin hide a timber frame from a normal inspection?
Yes. Modern timber frame often sits behind a cavity and a brick or block skin. From the drive it can look like a cavity masonry house. The survey should say if it could not confirm the structure. It should not invent wall ties for a frame, and it should not call it a PRC concrete house.
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?
What matters in the frame is moisture at sole plates, fire stopping in party walls, and whether alterations have cut panels. A visual survey sees cracks in the skin, damp at low level and the quality of alterations. It does not open panels. A cladding of brick is not evidence the frame was checked.
Tell the lender the construction if you know it, because some lenders ask. The survey does not speak for the lender. There is no RICS price for opening a panel. If the rating says the frame is unknown and you need it known, agree an intrusive look rather than a second walk around the brick.
What should you ask your surveyor?
- What construction are you actually reporting?
- Did you see a sole plate, a cavity, or only brick?
- Are party-wall fire stops something you could see? Usually not.
What are the typical next steps?
- Do not buy cavity-wall-tie repairs for a timber frame.
- Do not fill the cavity with insulation because a masonry house on the same street had that done.
- Show the lender the construction the survey actually states.
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
Is a timber-frame house non-standard in the defective-concrete sense?
No. Defective designations were about particular concrete systems. Timber frame is a different question. Do not use the PRC label because the brick is a skin.
Does a plasterboard lining prove timber frame?
No. Masonry houses are lined too. The survey should not guess from the paint.