legalisation of spanish property

What happens if the square meters that are officially registred in the nota simple are not correct? What to do? Call the deal off?

A lot of owners are in possession of a title deed with erroneous sizes and/or descriptions. Originally they may have bought or built a small house and later amplified it. Even for tax reasons they may have decided to declare only part of the built size.

If the difference between the registered and real size is significant, it is in your interest for future operations to have this legally modified.