Calling surveyors or those who have been surveyed!

[Icantremembermyusername]

My house is being surveyed on Thurs. What can I do to up.its value, please?

Well, you can't.

A survey is about the position / location of the building and the structure of it. It's not like "dressing a house" for a viewing, where a nicely ironed matching duvet cover might sway someone viewing. Surveyors are looking at the fabric of a building......windows, heating, roof, electrics, likely asbestos, the boiler and so forth, none of which you are likely to be able to do anything about before Thursday (except dig out any paperwork showing guarantees for new windows or a service record for your boiler, or an electrical survey etc.