Property types

How does a survey treat a timber-framed house?

Timber frame means a timber skeleton carries the building, not that every old beam is failing. Historic frames and modern factory panels are different buildings. A visual survey can record distortion, infill and damp staining. It does not open the frame, and it is not a structural calculation. Movement in old timber is not automatically a rating 3.

Last reviewed 24 October 2026. Written for buyers in England and Wales unless a source says otherwise. No named surveyor has signed this page. It is general guidance, not a report on your house, and not legal advice.

Which timber frame is this house?

A historic frame shows timber, or once showed it: posts, beams, sometimes a jetty, infill of wattle and daub, brick or light panels. A modern timber-frame house often looks like any other cavity house from the kerb. The surveyor should say which they think it is, and why. ‘Timber frame’ written once, with no sentence after it, is an incomplete finding. Ask them to unpack it.

Listed timber frames bring the listed-building guide with them. A 1990s estate house with a timber kit does not.

When is an old frame allowed to look crooked?

Historic frames were built green, and they have moved for centuries. A floor that slopes and a post that leans can be long-settled. They can also be a joint that has failed, a sole plate that has rotted, or a wall that is still moving. The surveyor’s job is to say what they saw and whether they think it needs investigation now. A photograph of a crooked cottage is not that judgement.

Approved Document A is the structure guidance for building work. It is not a tool for declaring a 1600s frame ‘non-compliant’ because it predates the document.

What should you ask about the panels between the timbers?

Infill fails when it is loose, cracked, or kept wet. A cement render or a modern gypsum plaster on a frame that was meant to dry can hold water against the oak. The survey can record cracking at the junction of timber and panel, and hollow or detached coats. It should not tell you to hack it all off in a weekend. If the house is listed, that work may need consent. Even if it is not, it needs someone who understands the frame.

Foam insulation sprayed against historic timbers is a separate and serious conversation. There is a spray-foam guide. Do not treat it as a green upgrade because the installer said so.

What can a survey see of a modern timber-frame house?

Cladding, the cavity if there are signs of problems at openings, seals around windows, and any staining that suggests water is past the outer leaf. The structural panels stay hidden. A warranty from the original builder, if it still exists, is a document. The survey does not confirm that the warranty is in force.

Alterations that cut panels, or that fill the cavity, matter more than they would in a house with masonry walls. If you plan them, say so. Level 3 is where RICS expects advice on work you are considering. The survey still will not open the wall up as part of the standard visit.

Common questions

There are beams in the lounge. Is the house timber-framed?

Not by itself. Beams are added for effect, and chimneys and floors have timbers in masonry houses. A frame means the timber is the structure. The surveyor should say which they are looking at. If they cannot tell without opening up, that limit belongs in the report.

What is a sole plate, in plain words?

It is the horizontal timber at the bottom of a historic frame, closest to the ground and to splash. Rot there matters because the posts stand on it. A survey can see the ends where they are exposed, and cannot see a plate buried behind a raised path. Buried is a reason to look, not a diagnosis of rot.

What is wattle and daub?

A historic infill: a lattice of small timbers with a plaster of earth, lime and fibre. It is not rubbish to be replaced with foam. Cracks and loss of keys are condition. Replacement with cement is often how the frame starts to stay wet. The survey describes what it can see.

Is every old oak house full of woodworm?

No. Furniture beetle and deathwatch beetle are real insects, covered in the timber guide, and flight holes are evidence of attack at some time. They are not proof of ongoing attack, and they are not proof the frame is finished. Ask whether the surveyor saw fresh frass. Do not commission treatment from a brochure.

Should you render over the timbers to protect them?

Covering a frame that was meant to be seen, especially with a hard cement, is a good way to hide decay and trap moisture. If the house is listed it may also need consent. Repair and shelter are not the same as wrapping. Take advice before you cover anything.

The modern timber frame is 15 years old. Is the warranty still the survey?

A warranty is a contract with an insurer or a manufacturer, if it remains in date and the conditions were met. A survey is a condition report for you. One does not renew the other. Ask for the policy. If there is no paper, the survey is what you have.

Can you knock through a timber frame the way you would a brick wall?

You can cut a masonry wall and insert a beam, with the right design and approvals. Cutting a post in a frame is removing structure that may also be historic fabric. The survey can flag the post. An engineer and, if listed, the planning authority, come before the saw.

Which level should you book?

Tell the firm it is timber-framed, and whether you think it is historic or modern. RICS points Level 3 at unusual and older construction and at major work. A recent conventional timber-frame house in fair condition may be a Level 2. Concealment is the reason to ask them, not to guess from this page.

Sources

Key facts

Two families of building: Historic frames (often oak, with infill) and modern timber-frame kits (panels, a cavity, a cladding) are not repaired the same way.
What the eye can do: A home survey records line, joints, infill, coatings and damp. It does not remove plaster as standard, and Level 1 does not advise how to manage defects.
Cement render: A hard cement coat on a historic frame is a known way to trap moisture against timber. The survey can see the coat and any distress. It does not specify the replacement plaster.
Modern panels: The frame is usually hidden behind plasterboard and a breather membrane. The survey sees claddings, seals and staining. It does not endorse the manufacturer’s warranty.