I am with La Caixa but see below for an explanation and also and also visit to search on your property:
https://www1.sedecatastro.gob.es/OVC...?TIPO=CONSULTA
The Cadastral Amnesty
Have you extended your home without telling the Cadastre Office? Have you added another room to the terrace of your penthouse? Spain has an enormous number of illegal homes, thousands and thousands of homes and/or building renovations which have not been registered at the Cadastre Office. However as from 2013 they can be legalised by merely paying a 60-euro fee. This is the cadastral amnesty, a measure which will allow hundreds of thousands of properties to be legalised, and allow homeowners to avoid fines of up to 6,000 euros.
The Government uses orthophotography, or aerial photography, to uncover cadastral fraud, namely when a building´s use or size has been changed but these changes have not been reported to the Cadastre Office. The failure to register these changes means that the revenues collected by the tax authorities for property tax, personal income tax and other property-related taxes are lower than they should be.
These photos are evidence of fraud, but run contrary to the law as they could be considered to be an invasion of privacy. Consequently, the Ministry of Finance has decided to implement a cadastral amnesty, which will allow owners to register improvements to their property by paying a 60-euro fee. The amount of tax that will be collected directly through this measure is not expected to be very high. However, it is hoped that this this measure will improve indirect tax collection, through taxes such as the property tax.
There is one bright spot for taxpayers who have defrauded the Cadastre Office. The Cadastre Office regularly conducts random visits to property owners, and the fines for unreported building work can range up to 6,000 euros. However owners can avoid a fine by paying 60 euros to register any improvements they have made. The amnesty is expected to start in 2013 and last until 2016, and the Cadastre Office is expected to launch a massive verification programme during this period.
However, it will only be possible to legalise homes that may be registered at the Cadastre Office. Homes that have been built in areas where building is not permitted or do not comply with planning regulations will not be legalised. Despite this, it is estimated that hundreds of thousands of property owners will take advantage of this amnesty.