For most home-buyers, their number one concern is that the house may hide an expensive secret that will cost them after the sale is complete, so visible cracks in walls or ceilings are sure to set alarm bells ringing. If there's no way to repair it you should be upfront with the buyers. Consult a surveyor who can advise if the crack is harmless – in which case you can pass on the report to serious potential buyers. If there's a bigger problem such as subsidence, you may need to reconsider your asking price.

35 problems that will stop someone buying your home