That sensitivity test is more valuable than another decimal place. The 8.1% may survive, shrink or reverse depending on how ambiguous entries are handled.
Another complication is new-listing volume. If more good-condition stock arrived during the period, weaker properties could remain available longer without buyers consciously negotiating on energy.
I’m in Madrid comparing annual plans for renovation-planning tools, and the prices seem to vary much more than the actual feature sets. Before paying list price, does anyone know of a legitimate discount available in Spain through a professional body, trade association or property community...