What will happen if I  do not make a Spanish will?

As foreign will may cover your Spanish assets but it will be a slow and expensive process (translation, obtaining the probate of will in the jurisdiction of the will, legal assistance…) to get it recognised in Spain..

For your heirs to transfer your Spanish property to their names, the process is much simpler if there is a Spanish will. If there is no Spanish will registered in the central registry of wills, then in the worst case, your property will pass to the local and regional government.