I would put energy performance further down the list. It is useful, but any mismatch between the advertised area and the title paperwork is more fundamental. Confirm ownership, boundaries and the basis for the 115 m² first; then assess running costs and condition.
I would want the title position clarified before booking a viewing. Does the documented area correspond with the advertised 115 m², and are the house and any additional land covered by the same title documents?
Our main constraint is that staff cannot keep copying the same information between systems. We have been trialling separate products for enquiries, paperwork, viewings and deal updates, and the attractive interfaces matter less than whether the next colleague receives a usable record with its...