Community quota calculated incorrectly in our apartment in Spain

[Lawbird Lawyer]

Dea Sir/Madam,

As you correctly write in your post, Spain's Commonhold law (Ley de Propiedad Horizontal) requires as per its arts 5 and 17 unanimity to change the assigned quotas. Any amendment to the quotas which hasn't been approved unanimously by all communers would not be legal.

If you were to take this matter to a Spanish judge he would assign fairly the quotas, yes, if they are blatantly unfair as it seem they are now to some of the communers. Art 18 rules this matter of challenging illegal agreements in commonholds before a judge.