: This is your mandatory tax identification number for all financial and legal activities in Spain. You can apply for it at a Spanish consulate in your home country or at an immigration office in Spain. Note that the physical document must often be issued within 3 months of the purchase date to be valid at the notary.

: Essential for paying property taxes, utility bills, and potentially securing a mortgage. The Buying Process Buying a property in Spain: Requirements and Steps

: A current, legible copy is required for all legal identification.

: You will need to provide documentation showing the source of your purchase funds to comply with anti-money laundering regulations.