There are many neighboring communities that at some point pose to his lawyer the possibility of renting common areas with a view to generate extraordinary income. Community parking or roofs for solar panels are generally usable. What predictions we have observed to undertake such action? Fundamentally the required majority so that the adopted agreement is valid. We must observe the Art. 17 of the Horizontal property law, which stipulates how the Board of proprietors, and whose first point agreements should be adopted asserts that you for the validity of agreements involving the adoption or amendment of the rules contained in the establishing of the horizontal property title or in the statutes of the community the unanimity will be required, indicating in this same section of the article 17, in the final paragraph of the second paragraph of the same lease of common elements not assigned a specific use in the building will also require the affirmative vote of three-fifths of the owners that, in turn, represent three-fifths of participation, as well as the directly affected owners dues, if any. This article that apparently can be contradictory even for lawyers, actually it is not, since the jurisprudence is constant and peaceful understanding that the true purpose is to obtain a qualified majority for the lease of common elements; do this without going to assess whether such action may involve or not a modification of establishing title or statutes, something that in most of the cases happened.