Age and type of house
Rooms have been formed in the roof of a chalet bungalow, between trusses. What has the survey not confirmed about those trusses carrying a floor?
The rooms formed in this chalet bungalow roof, between the trusses, are rooms the survey has not confirmed the trusses can carry as a floor. Seeing a bedroom in the roof is not a design check. The visit can describe the space, the lining and any obvious notch or alteration it could see. It cannot confirm that those trusses were designed, or later adapted, to carry a floor. No span and no load should be invented from the fact the rooms exist.
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?
Roof trusses are arranged for the roof they were built to hold. Putting rooms between them adds people, furniture and a floor the original arrangement may never have been asked to carry. Unless the connections and any new joists were visible and understood, the survey's honest line is that the carrying of a floor was not confirmed. A furnished room is not that confirmation.
Ask which members were seen, and whether any cut, notch or extra timber was visible. Building-control papers, if they exist, are for the solicitor to obtain, not for the survey to invent. Do not tell a lender the roof structure is adequate because the rooms are decorated. The missing confirmation is the point of the comment, and it stays missing until someone qualified to design the alteration has looked.
What should you ask your surveyor?
- Which truss members could you see, and were any of them cut or loaded by a new floor?
- Are you saying the floor load on those trusses was not confirmed?
- Did you see any drawing or approval, or only the finished rooms?
What are the typical next steps?
- Do not assume the trusses were designed to carry the new roof-floor.
- Ask the solicitor for any building-control papers rather than inventing an approval.
- If the structure needs checking, instruct that check instead of reading it into the decoration.
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 rooms feel solid, have the trusses been confirmed?
No. A solid feel underfoot is not a design check. The survey has not confirmed that the trusses can carry a floor.
Does a chalet bungalow always include proper roof rooms?
No. The name only describes the house type. Rooms formed later between trusses are an alteration, and this visit did not confirm the structure.