A practical recut would use matched groups: similar area, setting, size and condition, then note first asking price, cut date, final status and marketing time. Add energy-related features only after those basic differences are controlled.
I’m not convinced this necessarily shows rising selectivity. Well-presented villas selling faster than renovation projects is what I would expect in many market conditions. To argue that behaviour changed in April, you’d need the same comparison from earlier months within those same...