Agreements that require unanimity are all those that involve the approval or modification of the constitutional title or the statutes of the community. Changes to the structure of the building or common elements: construction of new floors, changes to the façade, installation of a swimming pool... Modification of the participation fees for common expenses.
By a majority of 3/5
Creation or elimination of the services like elevator, concierge, surveillance or other common services of general interest (equipment that improves the energy or water efficiency of the building...), even when they imply modification of the constitutional title or the statutes. Letting of common elements that do not have an assigned use.
By simple majority (half plus one)
Works or new services to eliminate architectural barriers that make access or mobility difficult for people with disabilities or over 70 years of age, the amount of which exceeds the equivalent of 12 months' fees.
Other agreements. At the first call, with half plus one of the owners present, it is approved with half plus one representing the majority of the quotas; at the second call, with the vote of more than half of those present.
By a majority of 1/3
Installation of telecommunications infrastructure and new energy supplies. The cost will be assumed by the individuals who approve it and those who later want to sign up.