The short answer
Value is influenced by location, nearby developments, planning constraints, environmental risks, building type, and lender appetite, not just size or condition.
Two properties that look identical on a floor plan can be worth very different amounts once you factor in what's planned nearby, how easily a lender will finance them, and what risks sit in the background. Size and condition are only part of the picture.
Why this matters for your purchase
This is the kind of thing a PropM8 Scan is built to show you early, before solicitors, surveyors or lenders are involved, while walking away still costs nothing.