The cadastral reference is the official and obligatory identifier of properties. It consists of an alphanumeric code, formed by twenty characters, which is assigned by the Cadastre so that every property must have a unique cadastral reference. It allows for the location of the real estate in the cadastral map, with such it can be ascertained exactly which real estate is involved in any legal transactions (purchase-sale, inheritances, donations, etc.), so as not to confuse some assets with others.
It must be included in all documents that involve relations of an economic nature or with tax consequences related to the property, such as public instruments, injunctions and administrative resolutions, records and administrative resolutions and in the documents stating the facts, acts or businesses of real importance to the domain and other real rights, lease or transfer contracts for any title of the use of the property, electricity supply contracts, technical projects or any other documents related to real estate that are determined by regulation. Likewise, it will be recorded in the Property Registry, in the cases provided by law.
The cadastral reference must also be recorded in the Property Registry.