Outbuildings and conservatories
Movement is described at the conservatory base and not at the main house. Has the house therefore been cleared of subsidence?
No. The house has not been cleared of subsidence. Movement is described at the conservatory base and not at the main house, which means that is where the survey saw it. A conservatory often sits on its own base and can move without the same pattern appearing on the main walls. Silence about the house is not a subsidence investigation, not monitoring, and not a cause. The survey has not said the house will stay still. It has located the movement it found. Clearing the house would be a stronger claim than the report makes.
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?
Conservatory bases are often lighter and shallower than the house foundation, and they are added later. Differential movement at the junction is a common place for a crack. That crack can be the conservatory alone. It can also be the first place a wider movement shows. The survey has not distinguished those storeys of explanation by digging, by levels, or by a season of monitoring. The sentence that names the conservatory base is a location. It is not an all-clear for the rest of the building.
If the crack at the base needs a cause, that is the further investigation the report is pointing at, usually a structural engineer, and nobody has been appointed by the sentence. Tell the solicitor the house was not given a subsidence clearance. Do not tell a lender the main building was investigated and passed. Photographs of straight house walls, if they exist, show those walls on the day. They do not retire the question the conservatory has raised.
What should you ask your surveyor?
- Was movement recorded at the conservatory base rather than as a house clearance?
- Has the house been monitored for subsidence?
- Does a quieter main wall prove the cause was only the conservatory?
What are the typical next steps?
- Do not treat the house as cleared of subsidence.
- Read the movement as located at the conservatory base.
- Instruct an engineer if the cause needs to be established.
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
Can the conservatory be removed and the note ignored?
Removal would be building work, not a finding of this survey. The report has not said the house is unaffected, and it has not designed a removal. If the base has moved, the junction with the house still needs understanding before anyone treats the problem as gone. Ask an engineer if the cause matters. Do not delete the paragraph because a future demolition is possible.
Does the survey say the conservatory base is subsidence rather than settlement?
Not unless the wording itself uses a cause, and even then a single visit rarely proves one. The question here is clearance of the house, which has not been given. Settlement, shrinkage and a poor base can look alike on one day. The survey located movement. It has not closed the mechanism, and it has not cleared the main house.