Age and type of house
Can a brick skin on a timber-frame house be read as if it were a cavity wall?
No. On a timber-frame house the brick outer leaf is a skin, with a cavity and usually a membrane behind it. It is not the wall that carries the floors. Wall-tie advice written for two masonry leaves can be the wrong repair. The survey should say whether it confirmed a frame, from a hatch or the eaves, or whether it is only inferring the frame from the lining and the age.
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?
Clues include a light tap, a timber sole plate at a threshold, plasterboard linings with no solid feel, and a cavity wider than a brick cavity of the 1930s. None of those, alone, is proof. An extension may be masonry while the original house is frame. The report should separate them.
Do not instruct a cavity-tie contractor, or a cavity-fill firm, until the construction is known. Do not assume a brick face means the house is traditional. If the frame matters to the lender, ask what wording they need, and ask the surveyor what they could actually see.
What should you ask your surveyor?
- Where did you confirm timber frame, if you did?
- Is the brick a skin or a load-bearing leaf?
- Which extensions are a different construction?
What are the typical next steps?
- Read the construction paragraph before you read the damp paragraph.
- Do not order cavity fill for a frame the survey has not confirmed.
- If the frame is only suspected, ask for the sentence to say so.
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 timber frame a defect?
No. It is a construction. Defects are rot, a failed membrane, or movement, if the survey actually found them.
Does a brick face rule timber frame out?
No. Many timber-frame houses were given a brick skin. The face is not the structure.