- abogado: Lawyer
- acta notarial: notarial deed within the framework of voluntary jurisdiction as the basis for entries in the „registro de la propiedad"
- acta de notoriedad: Voluntary jurisdiction procedures for land registration, where the principle of "tacto sucesivo", the continuous registration, has been interrupted
- afecciones registrales: charges entered in the land register, for example for future back taxes
- agente: Real estate-agent
- agrupación: Merging a plot of land with others
- alta catastral: Cadastral Office
- altura máxima: maximum permissible building height
- anotaciones marginales: Annotations in the land register that refer to documents that are being registered
- aparejador: Civil Engineer
- arras: Hand money or hand money. If "arras penitenciales" have been agreed, the contract can be cancelled by the buyer acknowledging that he will lose them or by the seller repaying them twice
- arrendamiento de obra: Contract for work, e.g. construction contract with building contractor
- asiento de presentación: A kind of notice of abandonment. Protection of the buyer for a certain period of time against further registrations.
- ayuntamiento: Town hall, municipal administration