FORMALITIES WHEN BUYING A PROPERTY IN SPAIN
Have a NIE (Número de Identidad del Extranjero) identification number. It can be obtained at the Consulate at the Spanish Embassy in Warsaw, in person in Spain or through an attorney - then there is no need to appear in person on the Iberian Peninsula.
A bank account at a Spanish bank (we need the account to pay the property tax, water and electricity bills).